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HomeMy WebLinkAbout02 CHBC Presentation4,+~f ~, r~ AGETIDA F~~PORT ITEM # 2 MEETING DATE: NOVEMBER 8, 2011 TO: PLANNING COMMISSION FROM: SCOTT REEKSTIN, SENIOR PLANNER SUBJECT: PRESENTATION ON CALIFORNIA HISTORICAL BUILDING CODE On October 18, 2011, City staff attended a workshop sponsored by CALBO (California Building Officials) on the subject of the California Historical Building Code. In an effort to provide the Planning Commission with additional historic preservation training, staff will be giving a PowerPoint Presentation and will be available to answer the Commissioners' questions regarding the California Historical Building Code. A copy of the PowerPoint Presentation and the 2010 California Historical Building Cade are attached for your review in advance of the November 8, 2011, meeting. Scott Reekstin Senior Planner Elizabeth A. Binsack Community Development Director Attachments: A. PowerPoint Presentation B. 2010 California Historical Building Code ATTACHMENT A POWERPOINT PRESENTATION 11 /02/20ll November 8, 2011 Planning Commission Presentation ~~~ Senate Bi 11 927 -January 1, 1.976. CHBC became mandatory in 1984. Only 30 pages in length. ~~ Performance based, not prescriptive. Applies to all Qualified Historical Buildings. =~ Cities must apply the CHBC to QI~~Bs. Determination made by building official. State Historic Building Safety Board. 1 11 /02/2011 Authority to interpret SHBC, hear appeals. Board Members State Agencies Architects ~,nbll~eel'S Contractors Building Officials Planners CPF rf Purpose 1~o provide regulations for the preservation. restoration, rehabilitation, relocation, or reconstruction of buildings or properties designated as Qualified Historical 13uildin~~s or Properties. hltetlt To facilitate the preservation and continuing use. of Qualified Historical Buildings or Properties ~~~hile providing reasonable satet~ for the building occupants and access for persons ~~ ith disabilities. 2 11 /02/2011 Requires City to accept solutions that ace reasonably equivalent to the Regular Code when dealing with Qualified Historical Buildings or Properties, as determined by building official. Does not ah~~ays require historical buildings to n~ect the same safety standards as ne«~ buildings. ~~ Does not allow unacceptable levels of hazard to exist in historic buildings. -_ Recognizes the benefits of fire sprinklers and other modern technologies o reduce level of risk. " 1~pplication - ov~~ner must elect to use CHI3C. Additions, alterations, and repairs -shall conform to the Regular Code. Relocation. Change of occupancy. Continued use. Correct unsafe buildings ~r properties. Additional work not required, except for accessibility anddistinct hazards. 3 11/02/2011 Qualified Historical. Building or Propet~ty ~Am structure or property. collection of structure,, and their related sites deemed of importance to the. liistor~, arehiteeunr, i~r culture of an area b_v tug appropriate local or state eo~~rmmental jurisdiction. phis shall include historical huildin~s or structure; on e~istina or future natiunal_ state ~n local historical rep-inters or o~licial inventories. such ~~; the tiationat Re~zisler oh (listoric Places. Sate 1 [istorical Landmarks. Stale Points oCllislorical hnerest and cite ur counR re~~istcrs or in~cntorics of historical orarchitccturalh~ si~~niflc<int sites, places. historic districts_ or landmarl:~. ~Iliis shall als~i include place,, locations, ur sites identiticil tm these historical ic~i;tcrs or uflicial in~cntorics and deemed ol~importance to the historc. architecllaro. or culture of an area h~~ an appropriate Iocal or state ~ao~rrnmental jurisdiction. Regular Code ~ The adapted rcLUlations that guacrn the dcsi2n and construction or aheration of nonhistorieal biiildinds and properties ~tiithin the jurisdiction oCthe cnl<~rcin~a agens;~'. Elisting Use -may continue, ifl legal. ~~~ Chal~lge in Occupancy -tray change. Occupancy Separations -may be reduced if sprint{lered. Max l~ loor Area -Unlimited. if sprinklercd. Mal H~;ight -.Lap to historical design. Light & VEntilation -safety. hazard prohibited. [Zesidel~tal -min. sleeping room sire, min. light and ventilation. 4 11/02/201.1 Automatic sprinkler/life-safet}~ systems. Cannot substitute for required exits. Fire reta~°dant treatments of roofs. Fire alarm systems - as required by the Regular Code. Existing openings, corridors shall be permitted ~~~hen space is sufficient to pass through. r Existing stairs, handrails are allowed if not a distinct halard. Existing previously approved fire escapes are acceptable, subject to specified standards. Ne~~~ fire escapes meetinv~ certain requirements are acceptable. Sleeping room windows required. s 11 /02/2011 Regular code applies unless compliance will threaten or destroy historical significance or ~~ character-defining features, in which case alternative provisions may be~ applied. Alternatives -entry (?00' mal), doors, toilets, ramps anal lifts. ~.; Equivalent Facilitation - .videos, plans, etc.. at all accessible levels. Lower level of safety prohibited for hospitals, schools, police and fire stations, etc. New nonhistorical additions and alterations shall comply with the Regular Code. ~~~ Gravity and Lateral Loads. Additions measures shall beconsidered to reduce damage in future earthquakes. 6 11 /02/2011 Archaic materials and :methods of construction. may remain. Masonry Adobe Wood I_,umbea- ~~rade marla not reduired Concrete Steel and Iron Veneers _. Safety hazards must be abated. _= Exempt from energy standards. _- New components shall comply with Title 24 unless historical significance is threatened. Fireplaces acceptable for heat in residences. ~~ Masol~y chimneys may remain. Basin and pitcher acceptable in :residences. Existing electrical may remain if safe. 7 11/02/2011 ~~ CHBC applies to Districts, natural features, site circulation, Landscaping, lighting, art, water features, etc. _~ CF1BC is used to provide sensitive solutions for treatment of associated historical. features. November 8, 2011 Planning Commission Presentation s ATTACHMENT B 2010 CALIFORNIA HISTORICAL BUILDING CODE i f £ s~ ^! ~ ~ -~ '~ ~~li~i~ ~di, ~~ ~~~~~ ?o~~ c~~~ ~~~~~~ -~~ ~~ 2010 California Historical liuildin~ Code California Cade of Regulations, Title 24, Pa~~t $ ~'ir~t t'i-irning: June 20I U ISBN 978-1-58001.-974-3 Published by International Code Connell 500 Never Jersey .Avenue, N~~, 6th Flaar G~Vashingtan, I7.C. 20001 1-888-422-72;3 C(7PI'R1UHT ic, 201.0 held by California l3uildin~ Standards Commission 2525 Natomas Park L3rive. Suite 130 Sacramento, California 95833-293Ci PR1N'1">~D 1N'I'1~iE U.S.A. E CE '1 his dacnment is the 8th of 12 parts of the official triennial compilation and pt.~biication of the adoptions, amendments and repeal of administrative regulations to Califarrtia Cade u~RegfrCcxtiuns, ~tle 24, also referred to as the Califon-role Bi~ildirrg Stct~ular~ds C"oc(e, `T'ills part is (mown <ts the Calif~~~nica Histor~icul l~atildirz~; Curie. The Califur~zia Building Stcxrulards Code is publishedu1 its entirety every three years by order of the Califonnia leuis- lature,with supplements published in intervening years. The California tegislattTre delegated authority to various state agencies, boards, commissions and departments to create building; regulations to unplement the State's statttte~. ~'?;~ ~~~ buildi n ~ regulation~, or standards, bade the same force of Iaw, and take effect [ 80 days after their publ ieation unlc~, < : ~[ I ~- erwisc stipulated. The C'alifortzia I3uilditzg Starulards Cade applies to occupancies in the State of California as ant7otated. A city, county, or city and county may establish more restrictive, building standards reasonably n .c ~~~aEy because of Local climatic, geological or topographical conditions. Findings of tl~e Iacal conditions}and the adopts d local lauilding standard(s) must be tiled 4vith the California Building Standards Commissions to become Effective and mG.. not be effec- tive sooner than the effective date of this edition of the Calijorrtiu I3ur`ldirxg 5t~ancfat-ds Cade. Local building standards that were adopted atxi applicable to previous editions of the Cal~u~rzzu 13aaiFclttig S`tartdrxrds Code do nut apply to [Iris edition without appropriate adoption and the required filing. Should you find publication (e.g., tyl~ographicalj errors or inconsistencies in this code csr wish to offer comments toward improving its format, please address your comments ta: California Building Standards Commission 2525 Natomas Park llrive, Suite 130 Sacramento. CA 35833-2936 Phone: (916) 263-0916 Fax: (91 fi) 263-()9S9 Web Page: www.bse.ea.gov For questions on California state agency amerulments, please refer to the contact. list on page vii. 2010 CALIFORNIA HISTORICAL BUILDING CODE A NT 1 L N TIVE UL I S UALIFIED IST{a ICAL IL 1 'T'he Crtlifr~rrtirt Histaricnl i~'uil<ling C'orfe {CI-IBC) is unique among state regulations. Tlta autlaaring of the original CHBC required state agencies promulgating regulatiatts for building const~•uctian to work in harmony with representatives of other design and cas2struction disciplines. The result x~-as a tatalty necv approach tc} buiklitt~r c:ades fvr historiatl structures, which maintains currently acceptable life-safety standards. These regulations are also unique in that they are performance oriented rather than presct~iptive. The provisions of the CHBC are to be applied by the enforcing authority of every city, county, city and county, or state agency in perrttitting repairs, alterations and additions necessary for die preservation, reha- bilitation, relocation, related consU-uctian, change of use ar continued use of a quahfiecl historical building. The autlt«rity for use of the CHBC is vested in Secticxns 18950 through 18961 of the Health and Safety Code. Section 18954 states, ``The building department of every city or county shall apply the provisions of alternative building standards and building regulations adapted by the CI-IBC Beard pursuant to Seetian 18959.5 m permitting repairs, alterations and additions nece-scary for the preservation, restoration, rehabilitation, moving ar catttinued use of an histac9cai building ar st:ructure. A stag; agency shall apply the alternative building regulations adapted by the CI-IBC Beard pursuant to Section 18959.5 in permitting repairs, alterations and additions necessary for the preservation, restoration, rehabilitation, moving or continued use of an Ftistorica building or structure'" Iiawever, be aware that in order to use the CI-i13C:, the structure under consideration must be. qualified by being designated as an historical building ar structure. Section 18955 states, "For the purposes of this part, a yttah fled historical building ar struc- ture isany stricture or collection of structures, and their associ- ated sits deemzd ai~ importance to the history, architecture or culture of atx at-ea by ;in appropriate Iacal or state governmental ,jurisdiction. This shall include strictures o^ existing or future national, state or local historical registers or official inventa- ties, such as the Natianat Re~iste~- of Historic F'Iaces, State His- Corical Landmarl~s, State Points of historical Interest, and city or county registct-s or inventories of historical ar architecturally signiticant sites, places, I~istoric dist~•iets or landna~u•'~s:' The regulations of the CHBC have the same authority as state law and are to be considered, as such- Liability is the same as ft>r prevailing law. The. intent of the CHBC is to save C:alifarnia's architectural heritstge by recognizing the unique construction problems inherent in historical buildin¢s and by providing a Cade to deal ti~~ith these p~~blems. iv 2010 CAtriFORhlIA NISTORICA~ BUILDINCa CODE {; L F `~l'he background of the t"alifc~t~airt Ni,rtcrr~ic~z! &tilclirz~ Cody can be traced to December 197 ~, when the State Department of Parks and Recreation published the California Ipistary Plan, Vohtme I, in which Iiecomrrrendatian i'Vo, 11 was praposecl by the then California Landmarks fldvison~ Committee (later to became The State Historical Resources Commission). Phis l~raposal expressed a aced for a near building code to meet the intent of protecting the public health and safety and also r-etai^ `'enough flexil7ility to allow restc>ratian of a Historic feature ~,vhile still retaining its Historic integrit~t." Na. 11 of this His- taryPlan supported this need by stating that "`, .. restoration . , . is frequently rrtade difficult by unnecessar7ly rigid interpreta- tion of building ...caries" In 'larch of 1974, the Landmarks Committee by resolutiort recommended that the Director of the State Department of Parks and Recreation and the State Architect initiate a study to develop this needed cade. These two officials accepted this concept and jointly called a statewide meeting in Sacramento on May 14t:h of that: year. attending were representatives from both the public and private nectars, snch as members of the building industry. design professions, local and state building officials, and others interestet in this problem. fart oP tlrhs {7pen conference, a steering camrnhttee eras formed to explore in depth the ways and means of implementing the new historical building cade concept. This ad hoc comn>ittee was chaired by <t representative frays the California Council, American Institute of Architect and carnposed of a carnpre- hensive crass section of the professional organizations and government agencies concerned with design and cade enforcement. Meetings be.garr late in l 97~ and continued into early 1975. By ~'lprhl of that year, a legislative subconzrnittee of the ad hoc group drafted a sample bill. for t;he pre>pased cade and requested that it be carried by Senator Jaynes R. iVlills, President Pro Tem- pore a1'the Senate. Alter Further develaprrrettt and refinernertt, the. enacting legislation to create the authority for the Cade and an advisory board to prepare regulations to implement it (SB 927, i4phlls}was strpportet by both the legislature and the puh- lie. It was signed by the governor in September 1975, and became eff~aive January 1, 197Li. The members of the advisory board, which were rewired by law to include local and state building officials, individuals from the building industry and clesi rn professions, as well as representatives from city a~td county governments, were appohnte<l and held their first session in Sa~crarnenta, February, 24, 197b. This Board's duties included the preparation of cade regulations and the revie4v of specific, historic building cases, ~~ hen altic<r11y requested by' governing bathes. Several of the Board's members were a part of the original ad hoc steering catnmittee and thus provided a continuity and smooth transition from the inception of the code`s philosophy t~o its pragmatic implemcntathon in these petfonnance-oriented regulations. The first comprehensive regulations were codified in august and C7cu7ber 1979, after years of careful teliberaton. 'p'hase regulations allowed all jurisdictions to atilize them at their dis- cretion in replacing armodifying details of prevailing prescrip- tive codes. Changes made hn law in 1984 and 1991, and to the code, make t:he <tpplieatian of the Califc~rrytia Histaricat 73uzldiirg Code stat- utes and regulations <rpplicable far all agencies and at the dis- cretion of the owner for local jurisdictions when dealing with qualifiedhistar-ieal buildings. These etrrrent performance regulations were atopted by the Board on June 23, 1998, and approved by the Califarrriaf3uild- hng Standards Commission on January 29, 2007, 2010 CALIFORNIA HISTORICAL BUILDING CODE 2010 CALlFORNlA HlSTORlCAL BUILL7iNG CODS CALIF I F L ITL 24 California Agency Information Contact List ('al farnir~ Enemy f'amnzissian Energy Hozlirze ...... . ................. (800) 772-.3.300 ................................. dr(916) 654-5106 Building l~:fticierzc_ti' S`tarzdcxrds Al~l~liance E(Jicierzt>~ Starzdcrrds Compliarzc~e ~~1'rrruaall~brtn.s I)etrartnzent a, j' Public F-IecrCtlz f)rgarzi ed Carnps Starzdrzrds .......... . .. (916 449-5661 !'adrlic S'~i~irnrrzirzg Pddls Standards ........ (91 F} 44g_ 5693 .Asbestos S'tandarcts .................... f514} 624-2874 Dezaartrrzent of Housirt~ and Carnrrzunii~~ peg=elooment Califarnirr State Lrxnds C"anzmissian Marine Qil Tez•nzinals ................. . (5621499-6317 California State Library Resources and lnfdrmatic>n ........... • . . (916) b.54-0261 Gorerzznzeru Pz+hlicatidn SeCtidn......... . (916j 654-{)069 Corrections Staudartlr Authority Local Adedt Jail Standards ............. . (911i j •324-1914 Local Juvenile Facility Standards ........ . (9115) 324-1914 I?elrartnzerzt af'Consumer ~f i~irs - Acununeture Board t)~ce Standards . .......... . ......... . (916} 44.5-5021 Uepartrnent of Consumer Affairs - Board a Phnnnacv Pluzrrnaey Standards .................. . (916) .574-7900 I)eyartment of Carzsumer Affairs -Bureau of Barberirz r'4rzd Casmetolo~y 13arfier• and Beauty Shop and College Stanrlcrrds . ......... . . ......... (916`,) 574-7574 .................................... (81)0)952-5210 Tle rr artment o„~' Gansrcrrrer Affairs - Bureazz of Horne F"urnishings and Therrrual Insulatiort Irzs°ulation Testing Standards ............. (916) 574-2441 I7elrarfrnerzt of Canszzmer Affairs - Strrrctural E'est Carztral I~oard Strzu~turrzl Standards ................... f8r)Oi 7.37-5184' ....................................(916)~61-8r'O8 Ue~rzt of Consumer Affairs - ~eterirzary Medical Board t%eter°inary Cld.rhital Standard ............ (916) 763-610 Ue artnzent of Food arzd Agriculture .~1eat czrzd Poultry Packirzs,~ Plant Standards ............................ (916) 6.54-1447 f)air.v Standards ....... . ............... (~16) 6.54-1447 Residential -Hotels, ~~Idtels, Alaartrnents Srragle-Farnzh= Ula'ellf7ggS ............ .. {916} 44.E-9471 F'erm~rnent Structures in ztildbilehome czrul Special t?ccuhanr,_b3 Par•lrs .. . . ........ .. (916} ~-15-9~~'1 ~'actdry-l3uzlt HdnS'Zng, MantLfQC'tUYP.d Iloztsing and Commercial Mddzclar... , .. {c}16j 445-333b' :Vldbifelu~nzes ~ Permits and Ins{~ections NortheYn Region....... ........... ..(916)225-2501 S`onrfzer•n Region ................... .. (951) i82-4420 ErnPloy~ee Housing Szandards .......... .. (916j 445-9471 1)e~ent a ~f'ater IZesaurces GYay l~t~ater Installations Staandards ... , ... (916} 6.57-96'67 I~iz~ision_~r the State firchiteet_- ~9ccess C;'orTZ~liurtce Access C"ornPliance Standards............ (916} 445-5100 Llivisian o/'tlze State Architect - StructuraC .Sa ety 1'c+hlic Srlyddls Sta~rzdards ............... (91 fi) =f45-&10(1 Essential .Ser~•ices 6uildizzg Standards ..... (916} 445-8100 Conznurnity C'dllege S'tarulcards ........... (9.16) 445-<4100 Divisiarz a 'the .State Architect -Mate Historical Buildirz~ Sae Board Alterrzatie~e 73zcilding Standards ........... (916) 445-8144 ()ice rrf Statewide Health C?/arenis7~* anif Dev_eda~rrnerzt Hospital Stundrtrds .................... {916) 440-`3409 Skilled Nursing l~aeillt~~ Szandards ........ (916} -1.10-13449 Clinic Standards ...................... (916) 440-&409 Pernzits .............................. (916}440-5409 O ice o tiae State 1+'ire .l2`arshal CddeL?et~eldpmenta~n~dAnatysis. . (91614'-15-8?Ol1 Fire Safety Standards. (916j445-82C?0 Fir-elalaceStarzdards .. .. ~ .. (916j445-6'200 1)ay-Care Centers Standards. . . .1916} 445-8204 ExitStarzdarzts . . . . . (9161445-8200 2010 CALIFORNIA HISTORICAL BUILDING CODE vii ~ynzbols in the ri~argic7s indicate where changes have been rnacie or language has been deleted. This sy~nboT indicates that a change has bean rn~de. ~ This sy~n~bo1 indicates deletion at language. viii 20rt0 CALIFORNIA tiiSTORtCAL BU~LDiNG COC}E L CI[~P'I'ER 8-1 ADItiI1NI8'I'I2ATI0\ .......... 1 Secticm 8-1C)l "Title. Purpose and latent .... . .... . . .......... 1 8-I02 Application ...............................1 8-103 t)rganizatic>n anti Enforcement ...... . ......... 1 8-104 Review and Appeals ........................ 2 8-105 Construction Methods and Materials ............2 8-IOfi SHI3SI3 Rulings ........................... c~IIAI'~r~;R 8-s Ac.c.~;ssII~II.I~rY ........... I~ Sectio^ 8-6t)1 Purpose, l:ntent anci Scope ..... . ............ 11 8-602 Basic Provisions .......................... 1 1 8-603 alternatives ...................... . ....... 11 8-604 Eduivalent Facilitation .. . .................. 12 CHAI'TF.'.R 8-7 ~TRIJC'I'IJRAIa RE(;~UI.,ATit)NS .. 13 Section CIIAY"I"ER 8-2 DEFINI"I'IfJNS .... . ........ 3 Section 8-201. I)efinitions ...............................3 C:HAPTF.R 8-3 liSE AND <)C'CIIPr~NCY ....... 5 Section 8-301 l~irpose and Scope ........................ . 5 8-3t)2 General .................................. 5 8-303 ResidentialOccupancies . ....................5 t'IIAI'"TER 8--1 I+'IRE PRO'TEC"I"It)N . ......... 7 Section 8-401 Purpase,Tntentand Scope ......... ..........7 8-402 Fire-resistive Construction ... . ..... .......... 7 8-403 Interior Finish !Materials ... . ....... .......... 7 8-4t)4 ~4'ood I..ath and Plaster ............ .......... 7 8-405 E)ecupancy Separation .......... . . ..........7 8-406 Maximum Floor Area.... ~ ........ .......... 7 8-407 1~'ertical Shafts ................... .......... 7 $-408 Roof Coverrrag .................. .......... 7 8-409 Fire Alarn7 Systerns .............. .......... 8 8-410 Automatic Sprinkler Systems . . ..... .......... 8 8-411 Clther Teehrtologies ............... ..........8 8-412 High-rise Buildings .............. .......... 8 CII.AY'I'ER 8-5 MEANS OF ECaKESS, ......... 9 Section 8-501 Purposc,Intentand Scope ...................9 8-SQ2 General .................................. 9 8-503 Escape: or Rescue ~~indows and boors ........ 10 8-504 Railings and Guardrails ............. . ...... 10 8-701 Purpose, Intent and Scope ..... . . . ........... 13 8-7C)2 General ................................. 13 8-703 Strttctttral Survey ......................... 13 8-704 idonhistorical Additions and Nonhistarical Alterations ............... . .............. 13 8-705 Structural Regulations ..................... 13 8-706 Lateral Load Regulations .. , ....... ~ ........ l3 CHAI'1'Ia;I2 8-8 AR(JHAI(:' MATI:RI.AI.S ,AND ME'I`IIQD5 OIL' CQNSTI2L'C'I"IO'V ......... 15 Section 8-801 Purpose, Intent and Scope .............. .... 15 8-802 GeneratEngineering Approaches ......... ....15 8-803 Nonstrueturai Archaic Materials .......... .. . . I ~ 8-804 Allowable Conditions tar Spi:cific Materials .... 15 8-805 '~Sasanry ............................ .... 15 8-806 Adobe .............................. ....16 8-8t)7 Waod ............................... ....16 8-808 Concrete ............................ ....16 8-805) Steel and Iron . ............. . ......... .... 16 8-81.0 Hollow Clay Tile ..................... .... l7 8-811 Veneers ............................. ....17 8-812 Glass and Cilaz_ing ................... . . .... 17 CIIAYTER 8-9 MECII.~NIC;AL, PLL"lYII3ING AND E:I,E(;TRICAI. REt7GIREIVIE NTS ......... 1~ Section 8-90i Purpose, Intent and Scope ....... . . ......... 19 8-9t)2 Mechanical ...................... ........ 19 8-903 Plumbing ........................ ........20 8-904 Electrical .... . ................... .. . ..... 21 2010 CALIFORNIA HISTORICAL BUILDING CODE ix CII.A,PTI;R ~-IO (~lijiI,IFI~ D HISTC)IZICr~L DISTRICT`S, SFi'ES ANll C)YEN SY~CES ..... 23 Section 8-10(71 Purpose <incl Scupe ........ . .... . .......... "?3 8-1002 .!~pplicati~an ............................. 23 5-1003 Site Relations ~ ......................... . . 23 ~PPI/Nlllfi A . . ....... ............ 25 HIST`tJKY Pv`t?TF APYENI)IX ............. 29 x 2010 CALIFORNIA HISTORICAL BUILDItJG CODE CHAPTER 8-1 ~N~~T T~ Note: The California Historical Suitding Coda, Part 8 of Tide 24, governs far all qualified historical buildings or properties in the State of California. SECTION 8-101 TITLE, PURPOSE AND INTENT $-141.1 "1 itle.'i'hese regulations shall be known as the Cextifor•- rtit~ Ilestoricrzl t3ttilc~ling Cade and will be referred to herein as `'the CEIBC"' 8-lt}1..2 Purpose. The purpose of the CHBC is to provide regu- lations far the preservation, restoration, rehabilitation, reloca- tion or reconstruction c.>f buildings ar properties designated as qualified historical buildings ar properties {C'hapter ~-'?). The CHBC is hrtended to provide solutions for the preservation of qualified historical buildings ar properties, to promote sustainability, to provide access for persons with disabilities, to provide a ca4t-effective approach to preservation, and to pro- vide for the reasonable safety of the occupants or users. The C1-1BC requires enforcing agencies to <~zccept solutions that are reasonably equivalent to the regular code (as defined in Chap- ter 8-2} when dealing with cluafifled historical buildings ar properties. 8-101.3 Intent. 'The intent of the CHBC is t:a facilitate the pres- ervatianand continuing use of qualified historical buildings or properties w°hile providing reas<:>nable safety izr the building occupants and access far persons with disabilities. SECTION 8-102 APPLICATION $-1(}2.1 Application. "l'he C}1BC is applicable to all issues regarding a>de compliance for qualified historical buildings or prapet•t:ies. The CT-T}3C; may be used in canjunctian with the regular code to provide solutions to facilitate the preservation of qualified hist:arical buildings or properties. The CHBC shall be used by any agency withjurisdiction and whenever eompli- ance wtththe code is required ft}r clualit~iecl historical buidirtgs or properties. 1, The state ar Iacal enforcing agency shall apply the pro- visions of the CHBC in permitting repairs, alterations and additians necessary for the preservation, restara- tion, reconstruction, rehabilitation, relocation ar con- tuiueduse of aqualified historical building ar property when so elected by the private property owner. 2. State agencies, All. state agencies shall apply the provi- sions afthe CHBC in pez-mitting repairs, alterations and additians necessary far t:he presezwatian, restoration, rehabilitation, safety, relocation, reconstruction cx• con- tinued use cif qualified litstarical buildings or proper- ties. 8-102.1..1. Additions, alterations and repairs. It is tkze intent of the CHBC to allow nonhistarical expansion ar a<1<iition to a qualified historical building or pr< perty, pro- vided nonhistarical additians shall canfann to the requirements of the regular Cade. See Chapter 8-2. 8-102.L2 Relocation. Relocated qualified historical build- ings ar properties shall be sited to catmply with the regular cads ar with the soiutu~ns listed in the CHBC. Nanhistarical new cotzstructiazt related to relocation shall cazt~ply with the regular Cade, R.ecanstruction and restor~~zt:ian related to relo- cation is permitted to comply with the provisions in the c~lt~c. 8-102.1.3 Change of oecupancyy. I~ar change of use. ar occupancy, see Chapter 8-.>, Use and Occupancy. 8-102.1.E Continued trse. ~aalifzed historical buildings ar properties tray have their existing use ar occupancy contin- ued ifsuch use or occupancy canfaz-mecl to the code ar to the standards of construction in effect at the time of construc- tion, and such use ar accupancty does not constitute a dis- tincthazard to life safety as defined in the CHBC. 8-1(}2,1.5 Unsafe hui}dings or properties. Z~ihen a quali- fied historical building ar property is determined to be unsafe as defined in tl~e regular Cade, the requirements of the Cl-}BC <zre applicable to the wrnk neeess~zry to correct the unsafe conditions. u'ark to remediate the buildings ar properties need only address the c;arrection af' the: unsafe conditions, and it shall not be required to bring the entire qualified historical building ar property into compliance with regular code. $-102.1.6 Ad€litianal work. Qualified hist:arical buildings arpraperties shall not be snbjectta additional work required by the regular code, regulation ar ordinance beyond that required to complete the work undertaken. Certain exeep- tions fc>z zccessibility and for distinct hazards exist by man- date and. may require specific action, within the parameters of the C1-1BC. SECTION 8-103 ORGANIZATION AND ENFORCEMENT f3-1(}3.1 Authority. The state or local anforeing agency, pursu- ant to authority provided under Section 18954 of the }icalth and Safety Cade, shall adtministerand enforce thepravisions i7f the CHBC in permitting repairs, alterations and additions nec- essary far the preservation, restoration, reconstruction, reha- bilitation, relocation ar continued use of a qualified historical building or property. 8-103.2 State enforcement. All state agencies pursuant to authority provided under Section 18954 and Sectiatl 189(il of the health and Safety Cade shezll administer and enforce the CHBC with respect to qualified.historical buildings ar proper- ties under their respective jurisdiction. 2giq CALIFORNIA NISTORtCAL BUILDING CODE ADMtNISTRATiON 8-11)3.3 Liability. Prevailing law regarding immunity of build- ing officials is unaffected by the use and enforcement of the CHBC. SECTION 8-104 REVIEW AND APPEALS 8-104.1 State 1-Iistcirical I3nilding Safety Beard (SI185Bj.In order to provide for interpret<~ztion of the provisions of the C'HBC and to hear appeals, the SHBSB shall act as an appeal and review body tc:s state and local agencies or any affected pat°tv. 8-104.2 SI3BSB review. When a proposed design, material or method of construction is being considered by the enforcing agency, the agency chief thebuilding official oe the local board of appeals may file a evrittezt request fcsr opinion to the S1II3SB for its consideration, advice or findings. In considering such request, ilze SfiBSB may seek ttte advice of outer appropriate private or public boards, individuals, or state or local agencies. "l'lte Sl1B5B shall, after considering all of the facts presented, including any recommendation of ather appropriate boards, agencies or other parties, determine if, for the purpose intended, the proposal is reasonably equivalent to that allowed by these regulations in proposed design, material or metlx~d of construction, and it shall transmit such findings and its decision to the enforcing agency for its application. `Che Bc:sard znay recover the costs of such reviews and shall report the decision in printed form, copied to the California Building Standards Commission. 5-104.2.1 State agencies. All state agencies with ownership of or that act on behalf of state agency o~.vners of. qualified historical buildings or properties, shall consult and c}btain SIIBSB review prior to tasking action c>r waking decisions or appeals that affect qualified historieaI buildings or proper- ties, per Section 1890,1 of the Health and Safety Code. 5-1.04.2.2 Imminent threat. Where an emerx~ency is declared and a qualified historical building or property is declared an imminent threat to life and safety, the state agency assessing such a threat shall consult with the SHBSB before any demolition is tmdertaken, per Section 189Ci1 of the hlealth and Safety Code. $-iA4.3 SHBC appeals. If any local agency admirtisterng and enforcing the CHBC or any person adversely affected by any regulation, rule, omission, interpretation, decision or practice of the agency enforcing the C'HBC wishes to appeal the issue for resoluticsn to fire SI-IBSB, either of these parties may appeal directly to the Board. The Board may accept the appeal only if it determines that issues involved are of statewide significance. The Board may recover the costs c>f such reviews and shall make available copies of decisions in pz-inted form at cost, cop- ied to the Ca1tfornia Building Standards Commission. 8-11)4.4 Local agency fees. Local agencies, when actively involved in the appeal, may also charge al~ected persons rea- sonable fees not to eYCeed the cost of obtaining reviews and appeals from the Board. sECTION s-y o~ CONSTRUCTION METHODS AND MATERIALS 8-105.1 Repairs. Repairs to any portion of a quali€ied Kist:ori- caI building or property tray be made in-kind with historical mat:eriats and the use of original or existing historical methods of construction, subject to conditions of the CHBC. (See Chap- ter t3-$. ) $-105.2 Sr~luti4ns to the California I~istoricat littilding Crxle. Solutions provided i tz the CHBC, or any other acceptable regulation or methodology of design or construction and rzsed in whole Orin part, with the regular code, or with any combina- tion of the regular code and the CHBC, shall be allowed. Tire CHBC does not preclude the use of any proposed alternative or method of design or eonstntction eat specifically prescribed or otherwise allowed by these regulations. Any alternative maybe submitted for evaluation to the appropriate enforcing agency for review and acceptance. The enPcsrcing agency may request that sufficient evidence or proof be submitted to substantiate any claims that Wray be. made regarding such solutions. Any alternative offered u1 lieu of that prescribed ar allowed in the CF-IBC shall be reasonably equivalent in quality, strength, effectiveness, durability and safety to that of the CHBC:. SECTION $-106 SHBSB RULINGS 8-106.1 General. Rulings of the :SIIBSl3 (i.e., farn~al appeals, case decisions, code intezpretations and administrative resolu- tions, etc. j that are issues of statewide application are required to be submitted to the California Building Standards Commis- sion in printed form. These rulings nay be used to provide guidance for similar cases or issues. 2t?1Q CALIFORNIA HISTORICAL BUILDING COQE CHAPTER 8-2 SECTIC}N $-201 DEFINtT10NS Firr the purpose of the C:HI3C, certain terms and phrases, words and their derivatives shall be construed as specified in this chapter. Additional definitions anchor terms rnay° appear in the various other chapters relative to terms or phrases primarily applicable thereto. anyrefcrence to "authorityhavingaurische- tion" does not ne~eessarily preclude the appellate process of Section 8-1()4.3. 1,DI)ITIUN.1 nonhrstorical cxtcrrsion or increase in floor area or height of a building or proper~t}~, AI:I'ERATIC)N. A modification to a qualified historical build- ing or propert}' that affects the usability of the building or property, or part thereof. Alterations inchrde, but are not lim- ited to, remodeling, renovation, rehabilitation, reconstruction, historical restoration, changes or rearrangement of the struc- tural parts or elements, and changes or• r•ear7•angenrentsrn the plan contiguratian of walls anti full-height partitions. BCIILDTNG S'TANDr1RD. Arty guideline, regulation or code that may be applied to a qualified listorical building or proper•t:y. C~HAItA('TFR-DEFINING FEATURE. Those visual aspects and physical elements that comprise: the appearance of a historical building or property, and that are significant to its historical, architectural and cultural values, inchrding the over- all shape of the historical building or property, its materials, craftsmanship, decorative details, interior spaces and features. as Weil as the various aspects of its site anti envir€>nrnent. C"ULTL?I~~L RESQURCE. Building, site, property, objector clist:rict evaluated as having sigiificance in prehistory or history. DISTINC'T` TIAZART). Any clear and evident condition that exists as an inrrnediate danger to the safety of the ocaeupants or public right of tvay. Conditions that do not meet the require- ments of current regular codes and ordinances do nc7t, of them- sely€s, constitute a distinct hazard. S~aian 8-104.3, SIiI3C appeals, remains applicable. ENFC)RCINt~ AGENt;Y, authority Having Jurisdiction, L.<>cal Agency with Jurisdiction. An entity with the responsibil- ity for regulating, eriforcing, reviewing or otlierw°ise that exerts control of or adminisu-ation over the process of gaining pcr- rnits, approvals, decisions, variances, appeals f{rr qualified his- torical buildings or properties. F..XI'I' LADDER DEVICE» An exit ladder device is a pernta- nerltly installed, fixed, folding, retractable or hinged ladder intended for use as a means of emergency egress franc areas of the second or thud stories. Unless approved specifically for a longer lertgt:h, the Ladder shall be limited t:o 25 feet (';620 mar) i^ length. >lxit ladders are permitted where the area served by the ladder has an occupant load Less than 1C) persons. I+'IRE I-I~Z~RD. Any condition which increases or nlay con- tnibate to anincrease in the hazard or menace of fire to a greater ele~rree than customarily recognized. by the authorit}' having .jurisdiction, or any condition or act which could obstruct, delay, hinder or interfere with the operations of firefighting personnel ar the egress of occupants in the event of fire. Section 8-104.3, SIIBC appeals, remains applicable. HISTOKIC'AL FABRIC f)R ILIATERIALS. (9rigirral and later-added historically significant construction materials, architectural trnislres irr elements in a partictrIar pattern or con- figuration which form a qualified historical property, as deter- mined 1~y the authority having jurisdiction. IIISTdRIC:1L SIGNIFICANCE. Importance for evhii;h a property has been evaluated. and found. to be historical, as deter- mirtecl (~y the authority having jurisdiction. Li~~TVIINENT THREAT. Any condition within or affecting a qualified historical building or property which, in the opinion afthe authority having jurisdiction, would qualify a building or property as dangerous to the extent that the life, health, pro}a- erty or safety of the public, its occupants irr those performing necessary reparr, stabilization or shoring work are in immedi- ate peril due to conditions affectinz the building or property. P€>ter~tial hazards to persons ushlg, or improF~ement5 within, theright-of-way may not be construed to be "imminent threat " solely for that mason if the hazard can be itutigated by shoring, stabilization, barricades or temporary fences. I1~i~I`EGRIT`Y. Authenticity of a building or property's his- torical identity. evidenced by the survival of physical charaa teristics that existed daring the property's historical or prehistorical period of significance. LIFE-SAFETY F..VALIIATIOltiI. An evaluation of the life-safety hazards of a qualified historical bttildi ng or property based on procedures similar to those contained in ~IFPA 909, Startdurct.%or the Pr©tecrif~n ©f C'arltrcrud Resources, A~perrdix B, Fire RaskAssessnaerzt trr Heritage PYemises. I1IFE SAFETY HA7;1RD. See L)istnct 1-Lazard. YERIC)D QF SICsNIFTCANCE. The period of time when a €luahfied historical building irr property was <tssociat:ed with important events, activities or persons, ar attained the charac- teristics for its listing or registration. I'I2ESERV.ATIt)N. The act i>r process €rf applying measures necessary to sustain the existing form, inte:,rrity and materials of a qualified historical building or property. Work, including preliminary measures to protect and stabilize the property, ~xen- erallyfocuses upon the ongoing maintenance and relaairofhis- toric materials and features rather than extensive repl<rcement and new constructitn New exterior additions are not within the scope of this treatment; however, the linuted and sensitive upgrading of mechanical, electrical and plumbing systerrts anti other code-related work to make properties functional is appro- priate within a preservation project, 2010 CALIFGRNIA HISTQRiCAL BUILDING CODE DEFINITIONS CII,<SI..IFIEI3 xis'rt)RI(':~.I, I3[~II~IaI'ti(~ C)R PR()I'- ER"I'1`. As defined in ~Iealth anti Safct~'Code Section 1 X955 as "Qualified Elistorical Building or Property:' any btulding, site, object, place,, location. district or collection of stnuaures, <dnd their associated sites, deemed of importance to the history, architecture or culture of an area by an appropriate local, state or federal ffoverndrental jurisdiction. This shall include histori- cal buildings or properties on, or determined eligible for, national, state or local historical registers or inventories, such as the rational Register of ffistoric Places, Ctdlifornia Register of Historical Resources, State Historical Landmarks, State. Points «f I~istorical Interest, and city or cozdnty registers, ins°en- tod~ies or surveys of historical or architectura3ly significant sites, places or landmarks. RECt)NS~1`R11C;`I'ION, The act or pz~ocess caf depicting, by meards of new constructiodd, the form, featrres and tletai ting of a nonsurviving site, landscape, building, property or object far t:he purp~>se of rejilicatin~> its appearance at a specific period of td dne. REGtiLAR t;O>~;~. The adopted regulations t zat govern the design and construction or alteration of nonhistorical buildings and properties withi n the,juz~isdiction of t11e enforci n g agency. REHABII..ITATION. The act. or process of making possible. a. compatible use for qualified historical building; or pro}~erty through repair, alteratiords and additions while preserving tha5e portions or features which convey its qualified historical, cul- tural or architectural. values. RELOCATION. The act or process of droving any qualified h i storieal buildi ng or property or a porti an of a goal ified hi stor- icalbuilding or propert}r to a ne,w site, or a different location on tide same site. RF..,P.~IR. ltedze~r-al, reconstruction c?r renovation c>f any por- tion of an existing property, site or building for the pud-pose of its continued use. RE~TOKAT'ION.1"he act or process of accurately depicting the farm, features and charactee of a qualified building or property as it appeared at a particular period of time by the means of the removal of features from odder periods in its his- tory and reconstruction of missing Fe:>tur:•~ from the restoration period. The limited and sensitive uT .~r,aiing of mechanical, electz~ical and plumbing systems and othcr~ode-required work to drake properties functional is appropriate within a restora- tion project. STR[JCTURE. That which is built or constructed; an edifice or a building of any kind, or any piece of work: artificially built up or composed of parts joined together in sonic definite rrdarmer. "I"KEAT~IENT. An act of work to carry out preservation, rUS- toration, stabilization, rehabilitation or reconstruction. 2010 CALIFORNIA HISTORICAL BUILDING CODE CHAPTER 8-3 S AN CCt,1~A CY SECTION 8-31}i PURPOSE AND SCOPE $-301.1 Purpose. The propose of the CHBC is to provide re4- ulations for the determination of occupancy cfassil~rcations and conditions of use for qualified historical buildings or properties. $-301.2 Scope. Every qualified historical building or property for which a permit or approval has been requested shall be clas- sified prior to permitissuance according to its use or the char- acter ofits occupancy in a~ccordance~ with the regular code and applicable provisions of this chapter. s1=cTION s-aa2 GENERAL. $-302.1 Existing use. The use or character of occupancy of a qualified historical building or property, or portion thereof, shall Be permitted to continue in use regardless of any period of time in which it may have remained unoccupied or in other uses, provided such building or property otherwise conforms to alt applicable requirementss of the CHBC. $-302.2 Change in occupancy. The use cu• character of the occupancy of a qualified historical building or propery maybe changed from ar returned to its historical use or character, pro- videdthe q~~talitied historical building or property conforms 1:0 the requirements applicable to the new use or character of occupancy as set: fortfr in the C1-1BC. Such change in occupancy shall not mandate conformance with new construction require- ments as set forth in regular code. $-302.3 Occupancy separations. Required occupancy sepa- rations of more than one hour may be redrtced to one-hour fire-resistive construction with all openings protected by not less than tlu~ee-fourths-hour tire-resistive assemblies of the self-closing c:>r acrtornatic-closing type when the 1?uilding is provided with atr automatic sprinkler system throughout the entire building in accordance with Section 8-410.x. l:)oors equipped wiih autosnatr~;-closing devices shall be of a type whit tr will function upon activation of a device which responds to products of combustion other than heat. Required occupancy separations of one hour may Be omitted wfrcn the Building is provided with an autornatrc sprinkler sys- tem throughout. $-302A?~laximunt floor area. Regardless of the use or char- acter of occupancy, the area of a one-story qualified historical building or property may have, bu t shall nat. exceed, a 11oor area of 1.5,OOt) square feet (1393..5 m") unless such an increase is otherwise permitted in regular code. Ulultistory qualified his- torical Buildings tincluding basements and cellars] shall be in accordance with regular code requirements. Exception; llistc>rical buildings may Be unlimited in floor area withoutfire-resistive area separation walls: 1. When provided with an automatic sprinklet•. or 2. Residential occupancies of two stor-ses or less when pro- videif with a complete fire alarn and anmtnciation sys- tem and where the exiting system conforms to regular code. $-3(12.5 Maximum height. The maximum height and number of stories of a qualified lustorieal Buifding or property shalt not be limited because c>f ccrosiructton tzrpe, provided such height ar number of stories does not exceed. drat of its historical design. $-302.5.:1. High-rise buildings. Clceupancies B, F-l. F-2 or S in high-rise buildings with floors located snore than 75 feet above the. lotvest floor level having building ae;cess may be permitted with only the stories over 75 feet provided with an automatic fire sprinkler system i#': 1. Tl~e bttiiding construction type and the exits con- form to regular code, and ?. ~ complete building bre alarm and annunciation system is htstaffed, and. 3. A tire barrier is provided between the sprinklered and nansprinkler°ed floors. $-302.b Ftire-resistive construction. See Chapter 8-4. $-302J Light and ventilation. Existing provisions fc}r fight and ventilation which do not, in the op'tnian of the enforcing agency, constitute a safety hazard tn<ty remain. See Section $-303.f> for residential requirements. See Section $-503 for Escape or Rescue Windows gall l:)oors. SECTION $-303 RESIDENTIAL- OCCUPANCIES $-303.1 Purpose. The purpose of this section is to provide reg- ulations for those buildings designated as qualified historical buildings or properties and classified as occupancies. The CI-CBC requires enforcing agencies tc.r accept any reasonably equivalent to the regular code when dealing w°lth qualified his- torical Buildings and properties. $-303.2 latent. 'I'he intent of the CHBC is to preserve the integrity of qualified histor7c<cl Buildings acrd properties while maintaining a reasonable degree c>f protection of life. health and safety for tine occupants. $-303,3 ~pplieatian and scope. T'he provisions of this section shall apply to all qualifiedhistorical buildings used far human habitation. 'Those dwelling units intended only for display; or public use with na residenrial sue involved, treed not comply with the requirements ol" this section. 2010 CALIFORNIA HISTORICAL BUILDING CODE USE AND OCCUPANCY $-3(13.4 Fire escapes. See Chapter 8-5. $-303.5 Roo-n dimensions. IZtx>n7s used f<>r sleeping pcrrpases may contain a minimum of 50 square feet (~.fi m~ j floor area, pra~•ided tl}.ere is rrraintained an a~ erage i;eiling height of r feet (2t3~ mm). Other habit<ble rooms need only be of adequate size t{.~ be tuni:tional far fire purpose intended. &303.6 Light and ventilation. ~~inda~~-s in habitable rooms shat l have an area of 6 percetrt of the #7aar area, or 6 square feet {(1.56 m'j, whiche~,~er is greater. Windows in sleeping rooms shall be openable {see Seetian t3-503 j. Residential occupancies need not lie provided with electrical lighting. &3{13.7 Alteration and repair, The alteration and. repair of qualified historical buildings or properties may permit the replacement, retentia^ and extension of original materials and the continued vise of original methods of canstruciion, pro vided alife-safety hazard is not created ar continued. ~11ter- atians and repairs shall be cartsistent with the C"I-IE3C. The arnaunt of alterations and repairs [s not limited, pra- videdthere is no nanhist:oricat irrcrease in floor area, volume ar size of the buildin¢ or property. $-3t13.$ Exiting. See Chapter &-5. 2010 CALIFORNIA HISTORICAL BUILDING CODE CHAPTER 8-4 ~ ~TEGT' SECTION 8-401 PURPOSE, INTENT AND SCOPE 8-401.1 Purpose. The purpose of thr`s chapter is to provide for fire protection of qualitied historic~il buildings or properties. The C'HBC requires enforcing agencies to accept any reason- <rbly equivalent to t:he regular i ode when dealing with qualified historical buildings or properties. 8-4{)L2 Intent. "1'lre intent of the CFIBC is to preserve the integrity of qualitied historical buildings or properties while rnaintairring a reasonable de~.:ree of fire protection based primarily cxr the life safety of the occupants and firefighting personnel. $-4{)1.3 Scope. This chapter shall apply when required by the provisions of Section 8-102. SECTION 8-402 FIRE-RESISTIVE CONSTRUCTION SECTION s-4o3 INTERIOR FINISH MATERIALS :dew nonhistorical interior wall and ceiling finish shall con- form to the provisions of the regular code. Cxisting noncon- forming materials used far wood lath and plaster walls, see Section 8-404. Eseeptitrn; ~~hen an automatic sprinkler system is pro- vided tlrrouatrout the building, existing finishes shall be approved. SECTION 8-404 WOOD LATH AND PIASTER Wood lath and plaster walls Wray be considered in accordance with codes, standartts and listings ptibhshed prior to Iq~3 whereby a wood stud wal l assembly with gypsum or li me plas- ter on hand split: or sawn wooden lath obtains aone-half-hour fn°e-resistive rating. This rating may be increased for interior walls t:o as much as one h~rur by filling the wall with nunerat fiber or glass fiber. 8-402.1 Exterior wall ctrnstrrretion. "I'Ire fire-resistance requirement for existing exte~riar walls and existing opening protection may be satisfied when an automatic sprinkler sys- tem designed for exposure protection is installed per the CHBL'. Tire automatic slrrirrklers may be installed on the exte- rior with at least. one sprinkler located over each opening required to be protected. Additional sprinklers shall also be dis- uibut;ed along combustible walls under the r<.rof lines drat do not meet the fire-resistive requirement due to relationship to property lines as required by regular code. Such sprinkler sys- tems may be connected to the domestic water supply on the supply-rnai.n side of the building slrrzt-{rfi~ valve. Ashur:-off valve may be 'installed. for the sprinkler system, provided it is locked in an open positi{rn. 8-402.2 Qne-hour eonstructian, Upgrading an existing quah- fred historical building <>r property to one-hour lire-resistive construction and one-hour fire-resistive corridors shall riot be required regardless of construction or occupancy when one of the following is provided; 1. An atrtc>nratic sprinkler system throughout. See Section &-410.2 for automatic sprinkler systems. 2. An approved life-safety evaluation. 3. Other alternative measures as approved by the enforc- ing agency. 8-402.3 Openings fn flre~rated systems. Flistarical glazing materials and solid wood unrated doors in interior walls required to have one-hour fire rating may be approved when opeeable windows and doors are provided with appropriate smoke seals and urlren the ~u•ea affected is provided with an automatic sprinkler system. See Suction 8-410 for automatic sprinkler systems. SECTION 8-405 OCCUPANCY SEPARATION See Chapter 8-3. SECTION 8-406 MAXIMUM FLOOR AREA See Chapter fl-~. SECTION 8-407 VERTICAL SHAFTS vertical shafts need not be enclosed when such shafts are blocked at every floor level by the installation of not less than 2 furl inches (SI nrm) c}f solid wood or equivalent construction installed so as to prevent the initial passage of smoke <rnd flame. Automatic sprinkler systems err other solutions may be consid- ered txr a case-by-case basis, in lien of enclosure of vertical shafts and stairwells. SECTION 8-408 ROOF COVERING I.:xrsting or original roofing materials may be repaired or recon- structed subject to the following requirements; 1. "1'he original or historical roofing system shall be detailed ar modified as necessary in order to be capable of providing strelte:r while preserving the historical materials and appearance of the roof. '?. 1Tdoodan roof materials may' be utilized where fu•e resis- tance is required, prc>vitled they are treated with 2010 CALIFORNIA HISTORICAL BUILDING CODE FIRE PROTECTION fi~c r~.rar:..~i~,i treatments to achieee a Class `'B" roof covering rating. titi'oad raofinR in state designated Urban. Wildland and E-Cgh Dire fc>nes shall be permitted when installed in class ".~" assemblies. 3. Jnnsilici:ions that prohibit wood rooting materials For applicatran as roof coverings and root` assemblies shall submit documentation for the adoption. Express terms, statement ofreasons and minutes of the action by the adopting authority health and Safetti Code, Section 1895~~(f). SEGTIC}N 8-411 OTHER TEGHNC}LQGIES Fire alarm systems, smoke and heat detection systems, occa- pant notification and annunciation systems,. smoke control sys- tems and fire modeling, times egress analysis and modeling, as well as oti~~er engineering methods and technologies may be accepted by the enforcing agency to address areas of nan- canformance. SEGTION 8-412 HIGH-RISE BUILDINGS SECTION $-409 FIRE ALARM SYSTEMS Every qualified historical building ar property shall be pro- vided with fire alarm systems as required for the use ar occu- pancy by t:he regul<~u- code or other approved alternative. Qualified historical buildings -having floors For human accu- p<~ncy located mare than 7S feet above the lowest f7aor le~~el having building access shall cattform to the provisions of the regular code for existing high-rise buildings as amended by the CNBC`. SEGTION 8-410 AUTOMATIC SPRINKLER SYSTEMS 8-410,1 Every c~lualified hist:ancal buikling ar property which cannot be made to conform to the constn~ctio^ requirements specit3ecl in the regular code For the occupancy or use, arad which constittrtes a distinct fire hazard (far definition of "dis- tinct: hazard," see Chapter S-2), shall. be deemed to be in com- pliance if provided with an automatic sprinkler system ar a Itfe-safety system c>r ot:her technologies as approved by the enforcing agency. ("Automatic" is detined in the regular code. Sprinkler System is defined in this section.) f3-41(3.2 When required by the. CHBC, an automatic sprinkler systems is defined by tl~e following standards {Far nonhazard- otis occupancies). 1. Buildings of four stories or less: NFF?4 13E2, 2002 edi- trarl. ?. Far floors above the fourth, IFP,~ 13, 2002. SFVI amended edition. 3. Buildings with floors above 75 feet, NF"PA 13, 2002 edition. 4. F~'hen the building is free stanclin:t or with property line separation, two floors and 1500 sf per floor ar less, tiFPA 131:3, 2002 Edition. 5. For exterior wall and opening protection. As required by this section. E.xeeption: 4~%"hen the autarn:rtie sprinkler systems are used to reach compliance using this code, in three ar mare <~~ccasions, the svste~n shall be N1~I?~ standard I"3D shall be increased to NFPf# 13R Standard, or i~FPA 13R standard shall be increased to a N3'Pt~ l3 standard. €3-41(L~ ryutomatic sprinkler systems shall not be used to sub- stitute for ar act as an alternate to the required number of exits from any facihry. (See Chapter 8-5 for exiting requirements.) f3-41(3.4 An automatic sprinkler system shall be provided in all detention facilities. 2010 CALIFORNIA HISTORICAL BUILDING CODE CHAPTER -5 E F SECTION 8-501 P!lRPOSE, INTENT AND SCOPE S-SOLI Purpose. The puzpose of this chapter is to establish minimum means of egress regulations for qualified historical buildings or properties. The CHBC regtrires enforcing agen- cies to accept reasonably equivalent alternatives to the means of egress requirements in tkae regular code. 8-5(11.2 Intent. The intent of dzese regulations is to provide an adequate means of egress. 8-501.3 Scope. Every qualified historical building or portion thereof shall be provided with exits as required by tfae C"f113C' when required by the provisions of Sectia^ $-102. SECTION s-5oa GENERAL &502.1(.feneral. The enforcing agency shall grant reasozrable exceptions to the spe;ciCic provisions of applicable egress regu- lations where such exceptions will not adversely affect hfe safety. $-5{12.2. Existing door openings and corridor widths of less than dimensions required by regular code shall be pernutted wkaere there is snfficzent width and iaei~ht for the aecupants to pass through the opening or traverse the exit. 8-502.3 Stairs. Existing sttairs having risers and treads or width at: variance tivith the regular code are allowed if deter- mined by the enforcing agency to not constitute a distinct haz- ard. 11an<Irails with nonconforming grip sire or extensions are allowed if determined by the enforcing agency to not constitute a distinct hazard. 8-Sf12.4 iVl.rin entry doors. The front or main entry doors need not be rchung t{~ swing in the direction of exit travel, pro- vided other means ar conditions of exiting, as necessary to serve tlae total occupant load, are provided. 5-502.5 F,xisting fire escapes. Existing previously approved fire escape and fire Escape ladders shall be acceptable as one of the required means of egress, provided they extend to the ground and are easily negotiated, adequately signed and in goc~>d working order. Access shall be by an opening having a minimum width of 29 inches (737mm) when open with a sill no more than 30 inches (762mm} above the adjacent floor, landing ar approved step. ~-g(}2.6 New fire escapes and fire escape ladders. New fire escapes and fire escape ladders which comply with this section shall be acceptable as one of the required iraeans of egress. New lire escapes and new fn•e escape ladders shall comply with the fol lot~~ ing~: Access from acon•idor shall notbe~ through <zn intereen- ing room.. All openings within 10 feet 13048 rum) shall be pro- tected by three-fourths-hoar fire asseazabfies. Wlrera located within a recess or vestibule, adjacent enclosure walls shall be of not: less than one-hour lire-resistive construction. 3. Egress from the building shalt be by a clear opening fraying a minira~um clinaension of not less than 29 inches (737 mm}, Such openings shall be openable frown the inside without: the use c>f a key or special knowledge or effor-€. The sill of an opening giving access shall not be znori: than 30 inches (737 mm} above the floor, step or landing of the building or balcony. 4. Fire escape stairways and balconies shall support the dead load plus a live load of not less than 1C}0 pounds per square foot 14.79 kNlm~~} and shall be provided tiyith atop and intermediate handrail on each side. The pitch of the stairway shall not exceed 72 degrees with a mi ni- murn width of 1 & inches (457 mmh Treads shall not be less than 4 inches {102 mnr} in width, and the zise between treads shall not exceed 10 inches (254 mm). A11 stair and balcony railings shall support a horizontal force of not lass than 50 pounds per Pineal foot (729.5 N/m'} of railing. 5. Balconies shalt not be Tess than 44 inckaes (1118 mm} in width with no floor opening other than the stairway opening greater than'lA inch (15.9 mrn} in width. Stair- svayopenings insuch balconies shall riot be less than 22 inches by 44 inches (559 by 1.1.18 rrmal, ':C"he balustrade of each balcony shall not be less than 36 inches (9 t4 nun} high with not more than 9 inches (287 nm7} between balusters. 6. Fire escapes shall extend to the roof or provide an approved gooseneck ladder between the top door land- ing and the roof when serving buildings fotu• or more stories in height having roofs with less Haan 4 units ver-- tieal in 12 units horizontal (33.3 percent slope}. Fire escape ladders shall be designed and connected tc> tfre building to withstand a horizontal force of 100 pounds (445 N) placed any~yhere on tfie rung. x111 ladders shall be. at least (5 inches (381. mm} wide, loeatedwithin l2 inches (305 nun) of dze building. Ladder rungs shall be `/, inch (1.9.1 nun} in diameter and shall be lacatect 12 inches (305 tutu} on center. Openings for roof accass ladders through cornices and similar projections shall have minimum dimensions of 30 inches by 33 inches (762 by 838 mm). The length of fire escapes and exit ladder devices shall be limited to that approved by the building offi- cial based on products listed by a recognized testing laboratory. 7. The lowest balcony steal l not be more than 18 feet (5486 mm} from the grounck. Fire escapes shall extend to the Rround or bo provided with counterbalanced stairs reaching tx.> the ground. 201Q CALIFORNIA HISTORICAL BUILDING CODE MEANS OF EGRESS 8, litre escapes sha11 not. take the place. of stairLVsa}s reduired by the codes under which the buildi3rg was coatstruc ted. 9. Fire escapes shztil be kept clear aaad aanobstructed at ail times and tnaintainecl in Qood working are-ter. SEC71C}N 8-503 ESCAPE OR RESCUE WINDQWS AND DQDRS Basements in dwelling unites and every sleeping roam below t:he fourth floor sha11 have at least one opznable window or door approved for emergency escape which shah open directly into a public street, public way, yard or exit court. >lscape or rescue windows ar doors shall have a aninimitm clear area of 3.3 square feet (0.31 m-} and a mirtianum width or height dimen- sion of lf3 inches (4.5~ mm) and be operable from the inside to provide a full, clear {opening without the use of special tools. SECTICBN 8-504 RAILINGS AND GUARDRAILS "i"he height of r<arlinv~s and guard railings and the spacing ol'bal- usters may continue in their historical height and spacing unless a distinct hazard has been identified or created t~v a change in use or occupancy. t0 20i0 CALlFC3RNIA KIST©RICAL BUILDING CODE CHAPTER 8-6 CCS I ILITY SEGTIUN 8-601 PURPOSE, INTENT AND SCt'3PE 8-601.1 Purpose. The purpose of the CHBC is to pt•ovide alter- native regulations to facilitate access anal ttse by persons with disabilities to and throughout facilities designated as qualified historical bttildit7~*s c?r properties. "These regulations require enforcing agencies to accept alternatives to regular code when dealing with qualified histortc<tl buildings ar properties. 8-601.2 Intent. The intent of this chapter is to preserve the integrity of qualif ed historical buildings and properties while providing access to and use by persons with disabilities. 8-601.3 Scope. The CI~18C shall apply to every qualified his- toricalbuilding or property that is required to provide access to perse?tts with disabilities. 1. Provisions of this chapter do not apply to new construc- tion or reconstntctionh-epiicas of historical buildings. 2. Where provisions of this chapter apply to alteration of qualified historical buildings or properties, alteration is detinedtn Califf>rrtia Iiuildirar Code (Ct3Cj, Chapter 2, I?efinitions and Abbr~vitttions. 202 - A. Alter or Alter- ation. $-601.4 General application. '~Che provisions in the CI-IF3C apply= to local, state and federal governments {Title II entities); alteration <>f commercial facilities anal places of public accom- modation (TitIeIII entities};and barrier removal in commercial facilities and places of public accommodation (Title lII enti- ties). Except as noted in this chapter. SECTIdN 8-602 BASIC PROVISIC?NS 8-5021 Regular Bode. The regular %ode for access for people with disabilities Title 24, Part 2s ~`ol. I , Chapter I II3) shall be applied to qualified historical buildings or ptt>perties tanless strict compliance with the regular code will threaten or destroy the historical sigttiticance or character-defining features of t:he building or property. SECTIC}N 8-saa AI.TERNATIVEs 8-603.1. Alternative ntitrin~um standards. The alternative minimum standards for alterations of qualified historical build- ings orfacilities are contained in Section 4. L7(3) of AI:)A Stan- dards for Accessible Desi4n, as incorporated and set forth in federal regulation 2S C'.F.I~. Pt. 36. $-603.2 Entry. 1"hese alternatives do not allo~nr exceptions for the requirement of level landings in front of doors, except as provided in Section 3-603.4. Access to any entrance used by the general pttbhc and no further than 2{)0 feet (60 960 mtn) from the printat•Y entrance. 2. Access at any ertt:rance not used by the general public but open and unlocked with directional signs at the pri- mary entrance and as close as possible to, but no further than 200 feet (60 960 nuts) from, the primary entrance. 3. The accessible entrance shall have a nc>tificatiort svs- tem. Where security is a problem, remote monitoring may be used. 8-603.3 I?oors. tllternatives listed in order of priority are: 1, Single-leaf door which provides a minituum 30 inches (762 mtn} of clear opening. 2. Single-leaf door which provides a minimum 29'1_, inches (749 nun} clear opening 3. Double door, one leaf of which provides <t minimum 29`L; inches (749 n-tm} dear opening. 4. Double doors operable with apower-assist device to provide a minimum 29't, inches (749 rrun} clear open- ing when both doors are in the open position. 8-603.4 Poxrer-assisted doors. Power-assisted door or doors may be considered an egttiv~alent alternative. to level landings, strikeside clearance and door-opening forces required by the regular code. $-603.5 Toilet. raonls. In lieu of separate-gender toilet facili- ties as required in the regular code, aft accessible unisex toilet faeifity- may be designated.. $-602.2 Alternative prov°isi~tns. If the historical significance or char<tctcr-defining features are threatened, altentative provi- sions for access tray be applied pursuant to this chapter, prcr vided the following eonclitions are met: 1. These provisions shall be applied only on an item-by-item or a case-by-case basis. 2. Documentation is provided, including meeting minutes or letat;rs, stating the reasons lin• the application of the alternative provisions. Such documentation shall be retained in the permanent file of the enforcing agency. 8-StY.3.5 Exterior and interior ramps and tiffs. Alternatives listed. in order of priority are: 1. A lift or a ramp of greater than standard slope but no greater than 1:10. for horizontal distances not to exceed S feat (1525 mmj. Signs shall be posted at upper attd lower levels to indicate steepness of the slope. 2. Access by ramps of 1:6 slope for horizontal distance not to exceed 13 inches (330 mm). Signs shall be posted at: upper and lower levels to indicate steepness of the slope. 2010 CALIFORNIA NISTC?RICAL BUILDING CODE ~ 1 ACCESSIBILITY s~cr~or~ ~-sa4 ~autva~~~T ~ACiu-rAT'on- Use of other designs and technologies, or deviation from par- ticuiar technical and scoping requirements, are permitted if the application of the alternative provisions cantainecf in Section 8-b03 cvoutd threaten or destroy the historical significance ar character-defining features of the historical building or property. 1. Such alternatives shall be applied only an an item-by-item or a case_b~.-case basis. 2. fyccess provided by experiences, services, functions, materials andresources through methods inclt~iding, but not limited ta, maps, plans, videos, virtual reaht~- and related equipment, at accessible levels. The alternative design andlar technologies used will provide. substan- tiatlyequivalent orgreater accessibility to, and usability of, the facility. 3. The official charged ~ ith the enforcement of the stln- dards shall document the reasons far the application of the design andlar technala~ies and their effect on the historical significance or character-defining features. Such documentarian shall be in accordance with Sec- tion £3-602.2, Item 2, and shall include the opinion and comments of state ar local accessibility officials, and the apiluan and comments of representative local groups of people with disabilities. Such documentation shall be retained in the permaaient tilt of the enforcing agency. Copies of the required dacument:arion should be available at the facility upon request. Note: For commercial facilities and places of public accommodation (Title III entitiesj. Equivalent facilitation far an element of a building or prap- erty when applied as a waiver c>f an :~I~A accessibilit:y regtrire- ntenr will not be entitled to the Federal Department of Justice cerdtlcation of this Cade as rebuu ~~ible evidence of compliance for that element. ~~ 21710 CALIFORNIA HtST®RICAL BUILDING CODE CHAPTER 8-7 T UC L UL TI SECTION $-701 PURPOSE, INTENT AND SCOPE $-701.1 P~2rpose. The purpose of the CHBC is to provide alter- native regulati«ns for the structural safety of buildings desig- nated asqualified historical buildings or properties, The CHBC regatires entorcin~r agencies to accept any reasonabt}r eiluiva- lentalternatives tathe regular°code vvhendealing with qualified histt:zrical buildings or properties. 8-701.2 Intent. The intent of the CHBC is to encourage the preservation of qualified historical buildings or properties wlti le providing a reasonable level of stntctural safety for occu- pants and the public at large through the application of the CHBC. $-701.3 ~pplicatian. The alternative structural regulations providedby Section S-7Q5 are to lie applied in conjunction with the regular code whenever a stntctural upgrade or reconstruo- tion is undertaken for qualified historical buildings or proper- ties. $-703.3 Historic<d records, Past historical records of the structure or similar structures rnav be used in the evaluation, including tl~e effects of subsequent alterations. SECTION $-704 NONHISTORICAL ADDITIONS AND NONHISTORICAL ALTERATIONS $-704.1. New nonltistoricat additions and nonltistorical alter- ationswhich are structttrall}~ separated from an existing histol•i- cal structure shall comply with regular code requirements. $-704.2 New nonhistodcal additions which impose vertical or lateral loads on an existing structure shall not be peln~itted unless the affected part of the supporting stntchtre is evaluated and strengthened, if necessary, to meet regular code require- ments. 1Sc~te: For use c>f archaic materials, see Chapter ~-8. SECTION 8-705 STRUCTURAL REGULATIONS SECTION 8-702 GENERAL $-702.1 The CHBC shall not be construed to allow the enforcing agency to approve or permit a lower Level of safet}~ of structural design and constraction than that which is reason- ably equivalent to the regular code provisions in oecttpancies which are critical to the safety and welfare of the public at large, including. but not linuted to, public andprivate schools, hospi- tals, municipal police and fire stations and essential services facilities. 8-702.2 Nothing in these regulations shall prevent voluntary and partial seismic upgrades when it is demonstrated that. such upgrades will improve Life safety and when a toll upgrade would not otherwise be required. SECTION &703 STRUCTURAL SURVEY $-703.1 Scope. When a structure or porrio^ of a structure is to be c~ aluated for structttr<tl capacity under the CHBC, it shall be ~~:r~. ~ ~ ed for structural conditions by an architect. or engineer knowledgeable in historical structures. The survey shall evalu- ate deterioration or signs of distress. "I'ttc survey shall deter- mine the details of the stntctural framing and the system for resistance of gravity and lateral loads. Retails, reinforcemetrt and anchorage of structural systems and veneers shalt bedeter- minedand documented wYzere these members are rehetl on fe:zr seismic resistance. $-703.2'~C`he results of the survey sltallbe utilized for evaluating the stntctural capacity and for designing modifications to the structural system to reach compliance with this code. $-705.1 Uravity Icaads. The capacity of the srz~ucture to resist gravity loads shall be evaluated and the structure strengthened as necessary. The evaluation shall include all part~c of the Toad }lath. Where no distress is evident, and a complete load path is present, the structure may be assumed adequate by having withstood the test ol~ tune. if anticipated dead anti live loads will not exceed those historically present. 8-705.2 LVind and seismic loads.'T'he ability of the structure to resist vvindand seismic loads shall be evaluated, The evahation shall be based on the requirements of Section 8-7t)6. $.705.2.1. any unsafe conchtions irz the lateral-laa<l-resisting system shztll be corrected, or alternative resistance shall be pro- vided. Additional resistance shall be provided to meet the minr- mttm requirements of this code. $.705.2.2 The architect or engineer shall consider additional measures with minimal loss of, and impact ta, historical mate- rials which will reduce damage and needed repairs in future earth<luakes to better preserve the historical structure in perpetuity. These additional measures shall be presented to the acv=ner far consideration as part of the rehabilitation or restoration. SECTION 8-706 LATERAL LOAD REGULATIONS $-7{16.1 Lrtteral loads. The forces used to evaluate the struo- titre for resistance tc~ wind and seismic lc:tads need nc>t exceed (}.75 times the seismic forces prescribed by the 199: edition of t:he Cal{fcrrnia f3uilctin,~ C'cule (C}3C} `I'Ite seismic forces rnav be computed based on the I'zw values tabulated in the regular code for similar lateral-force-resistirl~r tiysi:erns. All deviations 2010 CALtFORN1A HISTC3RICAL BUILDING CODE 13 STRUCTURAL REGULATIONS of tl~e detailing I~rc>viscans of the lateral-('orce;-resisting sys- tems shall be evaluated far stability and the abikit_y to maintain Iaad-cazrying capacity at increased Iater<z1 lc}ails. Unreinforced Masonry hearing wall buildings shall comply with appendix Chapter 1 oI` the tltziforrn t"ode for f3dzil~ting C,ortserz~ation'~'~ (LTC'BCT"'j, 1994 edition, and as Modified by this code. Reasonably equivalent standards may be used an a case-by-case basis sc-hen approved by the authority having jurisdiction. 8-706.2 Existing b~zilding perfornz<znce. 'ihe seismic resis- tance May be based upon the ultimate capacity of the structure to pez-Form, giving due cansider~itian to ductility and reserve Strength of the kater<zl-force-resisting syst:ern and materials while maintaining a reasonable factor of safety. Broad judgment may be exercised regarding the strength anii perfi>r- mance of Materials not recagnizeil by regular Cade require- ments. (See CLzapter 13-8, Archaic Materials arzd Methcxis c}t Canstructian, ) 8-706.2.1A1L structural Materials or members that do not comply with dettiiling and proportioning rciizzireznants of the regular Cade shad be evaluatedfar potential seismic per- formance and the consequence of noncompliance. .~Il members which Might fail and Lead to passible caklapse, ar tlu-eaten Life safety, when subjected to seismic deMands in excess of those prescribed in Section ~-7t}6.1, shall be judged unacceptable, and appropriate structural strengthen- ingshall bedeveloped. ~ncharages far veneers acid decora- tive ornamentation shall be included in this evaluation. K-706.3 Load path. A complete. and continuous Iaad path, including cont2ectians, from every part ar p{ rt:ian of the struc- ture to the ground sha1L Lae provided far the required forces, It shall be verified that the structure is adegirateiy tied together to perform as a unit when subjected to earthquake farces. 8-706.4 Parapets. Parapets arzd exterior decaratian shall be investigated far eonfarmance Leith regular Cade requirements for anchorage and ability to resist prescribed seismic farces. An exception to regular Cade requirements shall kie pem~it- ted for those parapets and decaratiarzs whickz are judged not to be a hazard to Life safety. 8-706.5 Nonstr>zctt~ral features. Nonstrucnzral features of historical structure, such as exterior veneer, cornices acid deca- ratians, which might fa11 and create alife-safety hazard in azz earthquake, shall be investigated. "l`heir ability to restst seismic farces shall he verified, i>r the feature shall be strengthened. l3-706.51 Paz-titions and ceilings of corridors and stau•ways serving an occzzpant load c>f 30 csr more skzall be ins-estigated to determrize their ability to remain in place when the build- ing is subjected to earthquake i'arces. ~a ~o~a cauFORNIA HISTt7RICAL suILaING CODE CHAPTER 8- T ~ L E~ F N SECTION -80i PURPOSE, INTENT AND SCOPE &8011 Purpnse. The ptu-gase of the C"HBC' is to provide regu- lations fr>r the use of historical methods and materials of con- sttuetion that are at variance with regular code requirements ar are not otherwise cadiFied, in buildings ar structures desig- nated asqualified historical buildings ar properties. The f~HBC require enforcing agencies to accept a~ay reasonably equivalent alternatives to the regular Cade when deahng with gnahtiedhis- tarical buildings ar properties. 8-801,2 intent. tt is rite intent of the Ct1BC to provide far the nse of historical methods and materials of consti•uctian that are at variance a=ith specific code requirements c}r arc not: other- wise codified. 8-$01.3 Scope. Any construction type ar material that is, ar was, Bart of the historical fabric of a structure is covered by this chapter. Archaic materials and methods of canstnaetian present in a historical stricture may remain ar be reinstalled ar be installed with new materials of the same class to match existing conditions. SECTION 8-802 GENERAL ENGINEERING APPROACHES Allowable stresses or ultimate strengths for archaic materials shall be assigned based upon similar conventional codified materials, or on tests as hereinafter indicated. The archaic materials and methods of construction shall be tharatkghly investigatedfar theircietails afcanstractian in accordance with Section 8-703. Testing shall be performed when applicable to evaluate existing conditions. The architect ar structural engi- neer in responsible charge of the project shall assign allal~~able stresses ar ultimate strength values to archaic materials. Such assigned allowable Stresses. ar ultimate strength values, shall rttat tae greater than those provided far iu the fallowing sectiorts without adequate testing, and shall be subject to the canctxr- renee of t:he enforcing agency. SECTION 8-803 NONSTRUCTURAL ARCHAIC MATERIALS required lay this Cade. The structural survey required in Section f3-703 of this cede shall document existing conditions, rein- farcement, anchorage, deteriaratian and other factors pez-tinent to establishing allcawable strc,ses anti adequacy of` the archaic. materials. The remaining portion of this ehaptee pravid.es addi- tianal sped#ic requirements far commonly encountered arch<tie materials. SECTION 8-805 MASONRY Far adobe, see Section 8-E306. 8-8051 Esistin~ solid masonry. F_,xisting solid masonry avails of any type, except adobe, Wray be allowed, without testing, a maxuanun value of nia7e pounds per square inch (62.1 kPa) in shear fvhere there is a qualifying statement by the architect ar ertgineer that an inspection has been made, that mortar joints are filled and that both brick and mart~~tr ax-e reasonably band. '1'he allt>wable shear stress agave applies to unrernfarced masonry, except adobe, cohere the nl~ximum ratio of unsup- ported height. ar length to thickness does not exceed 12, artd where minimum quality mortar is used or exists, mall height ar Icngt:h is measured to supporting or resisting elements that: are at least twice as stiff as the tributary wall. Stiffness is based on the Bross section. A1lacvable shear stress may be inereasecl by the addition of 10 percent of the axial direct stress due to the weight of the wall directly above. Higher-quality mortar may provide a greater shear value and shall be tested in accordance with GBC' Standard 21-6. 8-805.2 Stone rnasonrv. 8-805.2.1 Solid-tracked stcme nrasonry. Stone masonry solidly backed with brick rn<tsonry shall be treated as solid brick masonry as described in Section 8-1305.1 and in the UC}3C, provided representative testing and inspection sreri- fies solid collar joints between stone and brick and that a reasonable number of stones lag with the brick wythes as headers ar that steel anchors are present. Solid stone masonry where t:he wythes of stone efi~ectively overlap t{a provide the equivalent header courses may also be treated as solid brick masortr}'. Where nonst~2ictnral l7istarical taterials exist in uses which do not meet the requirements of the regular code, their continued use is allowed by this code, pravicled that any public health and life-safety hazards ~tre nutigated subject tea the concurrence of the enforcing agency. SECTION 8-804 ALLOWABLE CONDITIONS FOR SPECIFIC MATERIALS Archaic materials which exist and are to remain in historical si:ruetttres shall be evaluated for their condition axtd for loads $-805.2.2 Independent ~~~ythe stone masonry. Stone masonry with independent face wythes may be treated as solid brick masonry as described in Section 13-8{}5.1 and the L7C'BC', provided representative testing artd iaspectian ver- ify that the care is essentially solid in the masonry wail and that steel tries are epoxied in drilled hales between exiter stone wythes at floors, roof and not to exceed ~ feet (1219 mm} on center in each direction, between floors and roof. 8-804.2.3 Testing of stone masonry. "[eating of stone masonry shall be sinular to UBC Standard 21-6, except that representative st:anes which are not interlackcd shall be 2014 CALIFORNIA HISTORICAL BUILDING CODE 15 ARCHAIC MATEREALS AND nAE°CHODS OF CONSTRUCTION pulled +?ut yard from the wall and shear area appropriately calculated after the test. 8-805.3 Reconstructed waAs. Total ly reconstructed walls uti- hzh?g original brick or masonry, eonstntcted sinular to origi- nal, shall be constricted in accordance with the regular code. Repairs or a?fills may be constricted in a similar manner to the original calls withocit conforming to the regular code. SECTION 8-806 ADOBE 8-806.1. General. ~ nburrted clay masonry may be constructed, reconstructed, stabilized or rehaf~ilitated subject to t}us chapter. t~lternat:ive approaches which provide art equivalent: or greater level of safety may be used, subject to the concurrence of the eztfarcing agency. 8-806.2 Protection. Provisions shall 1?e made to protect adobe strictures from moisture and deterioration. The unreinforced adobe shal'1 be maintained in reasonably good condition. Par- ticular attention shall be given to moisture content of adobe walls, Unmaintained ar unstabilized walls or alias shall be evaluated for safety based on their condition and stability. ,Additional safety measures may be required subject to the con- currence of the ertfarcirtg agency. 8-806.3 Red€rirements. Lnreinforced new ar existing adobe walls shall meet the foIlowing requirements. Existing sod or rammed earth evalls shall 1?e considered similar to the extent these provisions apply. Where existing dimensions da not meet these conditions, adchtic?na1 strengtttenin~r measures may be required. 1. Or?e-start' adobe load-bearing ti~°alts shall not: exceed a height-to-thickness ratio of 6. 2. Two-stagy adobe buildings or strnctures' height- to-t:hicl~?ess wall ratio steal) rat: exceed 5 at the ground floor and fi at the second floor, and shall be treasured at floor-to-floor height when the second floor and aU:ic ceiling/roof rtrc connected to the wall as described below. ;, ~onload-bearing adobe partitions and gable ei?d walls shall be evaluated for stability and anchored against out-of-plane failure. 4. A bond beam ar equivalent structural element shall be provided at the tap of all adobe walls, and for two-story buildings at the secancl floor. The size and contigura- tian of the bond beats shall be designed in each ease to meet the rcquirernettts of t:he existing conditions and provide an effective brace for tl?e wall, to tie the build- ing together and connect the wall tt? the floor ar roof. 8-806. Repair or reconstruction. Repair c?r reconstruction of wail area may utilize unstabilized brick ar adobe nraLsanry designed to be compatible with the constituents of the existing adobe materials. 8-806.5 Shear values. Existing adobe may be allowed amaxi- mum value of faun pounds per square inch (27.6 kPa) for shear, with no increase. for lateral forces. 8-806.6141ortar. Mortar may t?e of the same sail coral?crsition <ts that. used in the existing wall, or in ne~v i~ tills as necessary to be compatible with the adobe. brick. SECTION 8-807 WOOD 8-807.1 Existing wood diaphragms or walls. Existing wood diaphragms or walls of straight ar diagarial sheathing shall be assigned shear resistance values al?prapriate with the fasteners and materials fttnctianin~ in conjunction with the sheathing. The strtctttral stin~ey sl?aII determine fastener details and spac- ings anal verify a load path through floi?r construction. Shear values of Tables £t-~-,A and 8_g-B. $-807.2 ~~ood lath and piaster, Wood lath and plaster walls and ceilings may be utilized using the shear values referenced in Section H-407.1. 8-807.3 Existing wood framing. Existing ~°c>od frsuning ntembers may be assigned allowable stresses consistent with codes vi effect at the time of construction. Existing or rely replacement wood framing tray be of archaic types originally used if properly researched, such as balloon and single wall. Wood joints such as dovetail and mortise acid tenon types may 1?e used structurally, provided they are well made. Lumber selected for use and type. need trot bear grade marks, and greater or lesser species such as low-level pine and fir, bax- waotl attd indigenous ltardwaods and other variations may be used for specitlc conditions where they were ar would have been used. Woad fasteners such as square or cut nails may be used with a maximum increase of S0 percent over wire nails far shear. SECTION 8-808 CONCRETE 8-808..1. I~laterials. natural cement: concrete, urtreirtforced rubble concrete and similar materials may be utilized wherever that material is used histarit:ally. Concrete of low strength and with less reinforcement than required by the regular code gray retrain hl place. "Ihe architect or engineer shall assign appro- priate values of strength based an testing of samples of the materials. Bond acrd development lengths shall be determined based an historical information or tests. 8-808.2 detailing. The architect or engineer shall careftilly evaluate all detailing provisions of the regular code which are cat met and shall consider the implications of these vatiatians on the ultimate performance of the stl-ucttue, giving due ean- sideration to ductility and reserve strength. SECTION $-809 STEEL AND IRON The hand-built, untested use of wrought or black Iran, the use of cast iron ar grey Irian, and the myriad of joinitig methods ghat are not specifically allowed by code may be used wherever applicable and ix~herever ti~tey have proven their worth under t:hc considerable span of years involved. with mast qualified histor- ical structures. Uplift capacity shoald be evaluated and 16 X010 CALIFORNIA HISTORICAL BUILDING CODE ARCHAIC MATERIALS AND METHODS OF CONSTRUCTION strengtl~enetl where necessary'. Fixed conditions <x rrridheight lateral Toads o^ cast iron columns that could cause failure sh{:rind be taken into account:.F.,xisting str-uctural wrought, forged steel or grey iron may t?e assigned the maximum Evoek- irtg stress prevalent at: the tune of original i:onstructit~n. SECTION 8-810 HOLLOW CLAY TILE The historical per€ormance of hollow clay file in past earth- quakes shall be carefully considered in evaluating walls of hollow clay file eonstnaction. f-Tollow clay rile bearing walls shall be evaluated and strengthened as appropriate for Lateral Ioads and their ability to maintain support of gravity loads. Suitable protective measures shall be provided to prevent blockage of exit stairtivays, stairway enclosures, exit ways and public ways as a result crf an earthquake. SECTION $-811 VENEERS 8-811.1'lerra ecttta azrd stone. Terra cotta, cast stone and nat- ural stone veneers shall be investigated for the presence of suit- able anchorage. Steel rtncitors shall be iarvest,igated ft>r deterio- ration ot- corrosion. New or supplemental anchorage shall be provided as tappropriate. &-811,2 ~nchr~}r€ige. F3rick ~~eneer with mechanical anchorae at spacings greater than required by the regular cotTe Wray remain, provided the anchorages have not cori•odcti, Nail strength in withdrawal in wood sheathing rrtavbe utilized to its capacity in accordance with code values. SECTION 8-812 GLASS AND GLAZING 8-812.1 Glazing subject tct hun~ian impact. TTistorical glazing material located in areas subject to human impact may be approved subject. t{s the concurrence of the enforcing agency when alternative protective measures are provided. `T'hese mea- sures may include, but not be limited to, additional glazing pan- els, protective t11m, protective guards or systems, and devices <:rr si4.*ns ~vhictt would provide adequaCe public safety. 8-812.2 Glazing in fire-rated systems. See Section 8-4E)2.3. TABLES-8A ALLOWABLE VALUES FOR EXISTING MATERIALS EXISTING MATERIALS OR CONFIGURAT30NS OF MATERIALS' Horizontal cliaphrrrgrns` I.l Roofs with straight sheathing and roofing applied directly to the sheathing 1.2 Roofs 4vith diagonal sheathing and roofing applied directly to the sheathing 1.3 Floors with scraigirt tongue-and-groove sheathing 1.4 E~~loors with straight sheaflrhrg and finislred wopd flouring with board edges offset or perpentiieulm- 1.5 S~-toots with diagonal sheathing and finished ALLOWABLE VALUES x14.594 for N/m l0() Ibs per tix~t for seismic shear 2S0 lbs per foot for seismic shear I0(} Ibs I.rer fcxrt for seisrtrie shear 500 Ibs per font for seismic shear 6(}0 Ibs net foot for seismic shear 2. Crosswalls~'' 2.l (']aster nn wood or nretrl lath 2.2 Plaster on gypsum lath 2.3 Gypsum wallboard, unblocked edges 2.4 Gypsum wallboard, blocked edges Existing footings, wood. fr~uning, structural steel and reinforced steel 3.1 Plain concrete frrt7tings 3."_ I3ouglas f'ir wood 3.3 Reinforcing steel 3.4 SCrtr~'.~:rral steel Per side: 200 lbs per fotrt ftrr seismic shear 175 Ihs per foot for seismic shear 75 Ibs per foot for seismic shear 125 Ibs per foot for seismic shear f,' = 1,50(} psi tIt}.34 MPa) unless other4~-isc shown by tests` Allowable stress same rs 13.F. No. 1' f, = 18.000 'Ibs per siTuare inch (12.1 Nimm'i maximum f. - 2(}0,00 Ibs per square inch 11379 ~7mm'1 maximum '~Qaterial must be „ ~und and in good condition. z~ bne-third incre.~~.~ in allocvabke stress is not allaw~t. 'Shear values c>f the.,e maferizrfs may be combined, except the total combined value shall naC exceed 00 parurds per foot (4380 Nlnt). Stresses given may be increzsel} fcrr eombinaticns of loads as spe~cifird in the regular code. 2010 CALIFORNIA HISTORICAL BUILDING CODE f7 ARCHAIC MATERIALS AND METHODS OF CONSTRUCTION TABLE 8-88 ALLOWABLE VALUES OF NEW MATERIALS USED !N CONNECTION WITH EXISTING CONSTRUCTION fERIALS OR Ct3NF6GURA71ON5 C?F MA7ER9AL5 i nd € nwncz€ ~ vn€ € c~c' 1. Horizontal diaphragms' I. i 1'ly~~ood sheathing nailed directly over existing straight sheathing wt`th ends of plywood sheets bearing on ,joists or rafters and edges of plywood located an center of irtdviclual sheathing boards 1.2 Plywood sheathing Hauled direcdy over existing diagonal sheathing with ends of plywood sheets bs€tring an joists or rafters 1.3 Plywood sheathing nailed directly over exi<= ,_rg straight or diagonal sheathin, with ends vi° plywood ,?~,~;~~, b~~:uing on joists ar rafters with edges of plywood lo~.tt-: d aver Hero blocking and nailed to provide a minitr,um nail penetration into framing and blocking of 1'l~ inch {41 meat} ?25 lbs per foot (3283 ?Vtm;t 37S lbs per foot X5473 Nhn) 75 percent of the values specified in the regular code 2. Shear walls: (general procedtu'e) Plywood sheathing applied directly over wood sands. Na value 100 percent of the value specified in the regular code fur shear shall be given to plywood applied over existing plaster or wood i walls sheathing 3. Crosswa}Is: {special procedw~e only} --- - ~ - - 3.1 Plywood sheathing applied directly over wood studs. No ~ 133 percent of the value specified in the regular cods for shsat~ value shall be given to plywood applied over existing ~ walls plaster or wood sheathing I 3,2 DryYVail or plaster applied directly over tivood studs ~ 100 percent of .lee values in the regular cods 3.3 Drywall or plaster applied to sheathing over sxistin~ waod The value 'pc. ~. ~ Esd in the regular code reduced as noted.' (1)BC Muds i Tab1e25 I F+;€~tnotc 1) 4. 'Tension bolts 4.1 Bolts extending entirely through unreinforced masonry walls secured with bearing plates on far side of° a three-w~ytlts-minimum w=all with at least 30 edgers inches (19 350 mm~) of area'"~ 4.2 Bolts extending to ehs exterior face of the wall wiih a 2!=z-inch {63.5 mm) raund plate under the head and drilled at an angle of 22'/z degrees to the horizontal instauled as specified for shear bolts,..':' 1,8001bs (80f}6 Nj per bolt 900 Ibs {40031`l) per halt for two-wythe walls 1,20(? lbs {5338 Nj per bolt S. Shear bolrws Bolts embedded a minimmn of 8 inches (203 nun) into unreinforced masonry walls and centered in a 2'L,-inch-diameter (63,5 mm} hole tilled with dry-pack or nonsltritilc ryrout. Through bolts with first 8 inches {203 mm) as noted abave and snibsddsd bolts as Hated in i ~:r; t^ 4.' ' 6, lnfilled ~'. ells Reinfurc ?: €3tasonry infillecl openings in exist~:~~g unreinforced mas~'nnr ~.~.,llE Pravide keys ar dowels to match reinforcing. 'l, inch (1?.7 mm} diamete~~ = 3gO lbs {1557 N)5 `l~ inah {l59 mm) diameter= 5001bs (2224 Nj¢ ~f, inch (f 9 mm) diameter = 750 lbs (3336 N}" Sams as values specified for unreinforced masonry walls 7. Reinforced n €asonry ~ y'lasatiry pier s and walls reinforced per the regular code ~ _ Same as vahie s spec€ft4d in the regal tr code' 8. Reinforced sortcrete Ccxnerete footings, walls and piers reinforced as specified in the Same values as spceified in the regular code` rc~ular coda € nd d~~"^~sd for tributary, loads i._. __ _._.. '~t one-third increase in alk>~:.~.ble stress is not allowed, except as noted. Ualuesandlnnitationsarefornailedplycaood. Highervakuesma_yhausedtorotherfa,tening~~.ystemssuchac~vaodsc7ewsorraplesiv~he€tapprovuibytheenfi'orcine authority. 'in addition to existing sheathing value. 'Bolts to he ',•'; inch {12.7 men} nlinimurn dianreter. 'Ihillingt~or holt and de?weI s shah be done with an elect~lc roeary dell L fmpaci toals shall not be usedfor dri Efine holes er tighleni ng anehors andhear btrlt nuts. °Otlrer bolt sires, value, and installation methods mtty- he used, provided a testing program is conducted in accordance with regnlarcode standards. Bottspacing shall not exceed 6 #eet (i 8:10 nuns on center and shall not be less than l2 inches (30~? mmj en center 'T:ntbedded bolts to be tested as speti.ified in regular Bode standards. 'Stresses given may be increase<t for <;ambinations o[ loads as specified in the regular code. 18 2010 CALIFORNIA HISTORICAL BUILDING CODE CHAPTER 8-9 IC L, L I G ECT !C L I ENT SECTION 8-901 PURPOSE, INTENT AND SCOPE $-901.1 Yurpase. The purpose of the CHBC is to provide regu- lations far the mechanical, plumbing and electrical systems of buildings designated as qualified historical buildings or prop- erties. 'l'he CPIBC requires enforcing! agencies to accept any reasonable equivalent sohtions to the regular code when deal- ing with qualified historical buildings or properties. $-9111.2 intent. The intent of the C:HBC is to preserve the integrity of qualified historical buildings or properties tivltile 1?roviding a reasonable level of protection from tire, health and Iif~e-safety lt~tzards (hereinafter referred to as safety l~azarcis) for the building occupants. $-901..3 Scope.'l"he C`1-IBC" shall be applied ire c«njunction with the regular code whenever compliance with the regular code is required for qualified historical buildings or properties. $-9111.4 :Sai"ety hazard. No person shall permit any safety haz- ard to exist on premises ~rnder their control. or fail to take immediate action to abate such hazard. Existing systems which constitute a safety hazard w"hen oper,ttionai may remain in place, provided they are completely and permanently rendered inoperative. Safety hazards created by inoperative systems shall not be permitted to exist. Requirements of the regular coda concerning general regulaEions shall be complied with. except that the enforcing agency shall accept solutions which do not cause a safety hazard. $-901.5 Energy conservation. Qualified historical buildings ar properties covered by this part are exempted from compli- ance vvith energy conservation standards. tiVhen new nonhistorical lighting and space, conditioning system compo- nents, devices, appliances and equipment are installed, they shall comply with the requirements of "Title 24, ParC 6, Tie Caf- if~rni~ Energy Cade, except where the historical significance orcharacter-defining features are threatened, SECTION $-902 MECHANICAL $-902.'1 General. ly~lechanical systems shall comply with the regulrrr code unless otherwise modified by this chapter. $-902.11 'The provisions of the CP~IBC shall apply to the acceptance. location, installation, alteration, repair, reloea- t:ion. repiacentent: or addition of any heating, vea~tilating, air conditioning, domestic incinerators, kilns ar miscellaneous heat-prodttcing appliances or egirrpment within or at:f.aclted to a historical building. $-902.1..2 >xisting systems which do not, in the opinion of the enforcing agency, constitute a safety hazard may remain In llse. $-9021.3 "i'he enforcing agency may approve any alterna- tive to the CHBC; which would achieve equivalent life safety. $-902.2 Pleating Facilities. A11 dwelling-type occupancies covered under this chapter shall be provided Fvith heating facil- ities. Wood-burning or pellet: stoves or fireplaces may be acceptable as heating facilities, $-9(12.3 Fuel oil piping anti tanks. Fuel oil piping and tanks shall comply with regular code requirements except that the enforcin:; agency may waive such requirements where the lack of compliance does not create a safety or environmental haz<zrd. $-9f12.4 Heat-producing and cooling equipment. Heat-pro- ducing arld cooling equipment shall comply with the regular code requirements governing equipment safety, except that the enforcing agency may accept alteniatives which do not create a safety hazard. $-902.5 Combustion air. 8-902.:,1 All fuel-burnin ;appliances and equipment: shall be provided a sufficient supply of aii- far proper fuel cam- bcrstiorz, venl:ilation and draft hood dilution. $-902.5.2 The enforcing agency may require operational tests for combustion air systems which do not comply with applicable requirements of the regular code. $-902.6 Venting of appliances. $-902.6.1 Every appliance required to be verit:ecl shall be connected to an approved uenting system. Wonting system, shall develop a positive flow adequate to convey ail combus- tion products to the outside atmosphere. $-902.6.2 Masonry chimneys in strt~teh~irally sound condi- tion may remain in use for all fuel-burning appliances, pro- videdthe flue is evaluated and clocurnenf ition provided that the masonry and grout are in good condition. Terra cotta chimneys and "Type C metallic vexits installed in concealed spaces shall not remain in use unless otherwise mitigated and approved on a case-by-case basis. $-9(12.6.3 The enforcing agency may require operational tests for venting systems which clo not comply with applica- ble requirements of the regular code. 5-902.71)uets. $-902.7.1 Nc,w ducts shall be constructed axle] installed in accordance with applicable requirements of the reg~ulai• code. $-902.7.2 Existing duct systems which do not comply with applicable reyuirementss of the regular code and do not, in the opinion of the enforcing agency, constitute a safety «r health hazard may remain in ase. A-902.$ Ventilating systems. 2CJi0 CALIFORNIA HISTQRIGAL BUILDING GODS ~9 MECHANICAL, PLUMBING AND ELEGTRIGAL REQUIREMENTS 8-902.81 Ventilating systems shad be installed so that no safety haz~u-d is created. 8-902.8.2 tu•ease hoods told grease hood exhaust systems shall be fittnished and installed in accorilttni;e with. applica- ble requirements of the regular code. Existing systems which are altered shall comply with the regular code. 8-902.91~Iiscellaneous equipment requirements. 8-9029.1 The following appliances and equipment shall lie installed sa that no safety hazard is created: warm air fur- naces, space heating equipment, vented decorative appli- ances, tlaur furnaces, vented wall furnaces, unit heaters, room h ,t~_~r5, absorption units, refrigeration equipment, duct fnrn.~cc~, infrared radiant heaters, domestic incinera- tors, ntiscLllaneous heat-producing appliances and water heaters. 8-9029.2 Storage-type cater heaters shall be equipped a°it:h a temperature- and pressure-relief ~-slue in accordance with applicable requirements5 of the regular code, SECTION 8-903 PLUMBING 8-903.1 General. Pinntbing systemsshall comply with the reg- ular code ariless otherwise noted, 8-903.1.1 The provisions of the C'HBC shall apply to the acceptance, location, installation, alteration, repair, reloca- tion, replacement t:>r addition of any plumbing system or equipment within or attached to a historical building. 8-903.1.2 Existing systems which do not, in the opinion of the enforcing agency, constitute a safety hazard tnay remain in use. 8-903.1.3 '~["ire enforcing <~agency may approve any alterna- tive to these regulations which achieves reasonably equiva- Ient life safety. 8-903.2 Kesidential occupancies. $-903.2.1 Where toilet facilities are provided, alternative sewage disposal methods may be acceptable if approved by d1e Ioc<tl health department. In hotels, where private facili- ties are not provided, water closets at the ratio of Otte for each 15 rooms may be acceptable. 8-9(13.2.2 Toilet facilities are not required to be an the same floor or in the same building as sleeping rooms. Water-9'lush toilets may be located in a building immediately° adjacent to the sleeping rooms. When alternative sewa~~i: disposal methods are utilized, they shall be located a minimum dis- tance from the sleeping t°oonts or other locations as approved by the Iocai health department. 8-903.2.3 Kitchen sinks shall be providedi in all kitchens. I"he sink and countertop may be of <tny smooth nonabsorbent finish which can be maintained in a sanitary condition. $-903.2.E Hand washing facilities shallbe~ provided for each dwelling unit aril each hotel guest room. A basin and pitcher may be acceptable as adequate hand washhtg facilities. 8-1)03.2.5 Hot or cold running crater is not required for each plumbing fixture, provided a sufficient amount of water is supplied to permit the fixture's normal operation. 8-903.2.E Bathtubs andlavatories with filler spouts less titan i inch (25.4 cnm) above the fixture rim may amain in use, provided there is an acceptable overflow below the rim. 8=903.2.7 Griginal or salvage water closets, urinals and f7uslxxneter valves shall be permitted in qualified historical huildinps or properties. Historically accurate reproduction, nonlow-consumption water closets, tarinals andflushometer valves shall be permitted except where historically accurate fixtures that comply with the regular code are available. 8-903.3 Materials. New nonhistorical materials shall comply with the regular code requirements. `I`he enforcing agency shall ai;cept alternative, materials which do not. create a safety hazard where their use is necessary to maintain the historical integrity of the building. 8-903. Drainage and vent systems. Plumbing fixtures shall be connected to an adequate drainage and vent system. The enforcing agency may require operational tests for drainage and vent systems which do not comply with applicable require- ments of theregularcode. Vent terminations may be installed in any location which, in the opinion of the enforcing agency, does not create a safety hazard, 8-903.5 Indirect and special ~~astes. Indirect and special waste systems shall. be installed so ghat no safety hazard is cre- ated. C~hemieal or industrial liquid wastes cvltich may detri- mentallyaffect the sartit:ary sewer system shall. be prctreat:ed t:o render them safe prior to discharge. 8-903.E Traps and interceptors. `I"raps and interceptors shall comply with the regular code requirements except that rite enforcing <t~.*ency shall. accept solutions which do nut increase the safety hazard. Properly maintained "S" and dntm traps tnay remain in use. 8-9(13.7 Joints and connections. 8-903.7.1 Joints and cottttections in new phimbing systems shall comply with applicable requirements of the regular i ode. 8-9(13.7.2 3oints and a>nnections in existing or restored sys- tentsmay be ofany type that does not create a safety hazard. 8-963.$ ~'~ater distribution. Plumbing fixtures shall be atn- nected to an adequate waterdistribution system. Theenforcing agency anay require operational tests for water distribution sys- tentswhich donor comply with applicable requi rernents of reg- ular code. Prohibited (unlawful) connections and cross connections shall not be permitted. 8-903.9 Building sewers and private sewage disposal sys- tems. New building sewers and new private sewage disposal systems shall comply with applicable reilurreaclents of the regu- lar code. 8-90:1.10 Fuel-gas piping. Fuel-gas piping shall comlrly with the regular code requirements except that the enforcing agency shall accept solutions which. dit not increase the safety hazard. zo 2Qi0 CALI~QRNIA HISTORICAL BUILDING GODS MEGHANIGAL, PLUMBING AND ELEGTRlGAL REQUBREMENTS EG7!®N 8-904 EL.ECTRICA~ 8-904.1 General. )lectrical systems shall comply with the regular code airless atheru=ise perntted by dais code, oe approved by the authority having jurisdiction. 8-904.11 The provisions of the CHBC shall apply to the acceptance, location, installation, alteration. repair, reloca- tion, replacement or addition of any electric aI system or por- tion thereof, the premise wiring, or equipment fixed in place as related to restoration withi n or attached to a qualified his- torical (.wilding or property. 8-904.1.2 Existing systems, wiring rnethocis <tnd electrical equipment which do not, in the opinion of the enforcing. agency, constitute a safety hazard may remain in use. 8-9041.3 "["ite enforcing agency may approve arry alterna- tive to the G.1ll3C which achieves equivalent safety. 8-9041.4 Archaic methods that do not appear in present codes may remain and may be extended if, in the; opinion of the, enforcing agency, they constitute a safe installation, 8-{)E}4,2 ~~'irng methods, 8-904.2,1 ~~here existing branch circuits do not include an equipment grounding conductor and, in the opinion of the enforcing agency, it is impracticable [o connect an equip- ruentgrounding conductor to the grounding electrode sys- tem, receptacle convenience outlets may remain the nangrounding type. 8-904.2.2 Ground fault circuit irrten•uhter (GFCT} protected receptacles stroll he installed where replacemenras are made at receptacle outlets that are required to be so protected by the regular code in effect at the time of replacement. Metal- hc face plates shall either be grounded to the ~rourrcied metal outlet box or be grounded to the grounding-type device when used with devices supplied by branch circuits without equipment grounding conductors. 8-904.2.3 Grounding-type receptacles shall not be used without a grounding means in an existing receptacle outlet unless GFCI prcrtccted. Existing nongrc>uncTing receptacles shall 1>e permitted to be replaced with norlgrounding or grortn<lirrg-type receptacles where supplied through a around fault circuit interrupter. 8-904.2.4 Extensions ctf existing branch circuits with<.nrt equipment-grounding conductors shall be permitted to sup- Ply grounding-type devices only when the equipment grounding conductor of the new extension is grounded to any aceessibie point oft the grounding electrode system. 8-904.2.5 Receptacle outlet spacing and other related dis- tance requirements shall be waived or modified if deter- mined to be; impracticable by the enforcing agency. 8-904.2.~i For the replacement of lighting fixtures on err existing nongrounded lightuig outlet, or when extending an existing nongrounding lighting outlet, the following shall apply: 1. The exposed conductive parts of lighting hxture~s shall be connected to any acceptable point on the ~rrottnding electrode system, or ?. 'l'he lightiatg f~ixturc;s shddl be rnatle cif ia7sttlating material and shallhave no exposed conductive parts. Exception: Lighting fixtures mounted on electri- cally nonconductive ceilings ar walls where located not less than either 8 feet {2~ ~ nrrn) verti- cally or 5 feet ~ l 52=f msn) horizontally from <_=rounded sur-f'aces. 8-904.2.7 Lighting load calculations for Services and feed- ers may ite based err acntal loads as installed in lieu of the "watts per square foot" method. $-904,2.8 Determination of existing loads may Tie based on maximum demand recordings in Nett of calculations, pro- vide{l all of the following are rnet_ 1. Recordings are provided by the serving agency. 2. 'T'he maximum demand data is available for a one-year period. Exception: If maximum demand data for a one-year period is not available, the maximum demand data shall be permitted to be based on the actual amperes continuously recorded over a mini- mum 3Q-day period by a recording ammeter con- nected. tothe highest loaded phase of the feeder or service. Tire recording should reflect the nraxi- tnum demand when the btailding or space is occu- piedand include the measured or calculated load at the peak time of the year, including the larger of the heating or coc}hng equipment load, 3. There has been na change in occupancy or character cif load during the previous l2 rni>rtt:hs. 4. The anticipated load will not change, or the existing clem<~lnd load at 125 percent pins the new load does not exceed the ampacity of the feeder or ratin¢ of the service. t 2010 CALIFORNIA HISTORICAL BUILDING CODE 21 z2 zoo cA~.:FORr~ia w~isro~tcA~. Bu~~.~ir~~ cone CHAPTER -10 III 1ST IG L 1ST IC IES N PACES SECTION ~-~ aai PURPOSE ANC} SCOPE 8-1(}01.1 Purpose. `I he purpose of this clxapter is to provide regulations far the preservati{>n, rehabihtatiatt, restoration and reconstruction of associated. histarical features of qualified his- torical buildings, properties ar districts {as defined in t"Itapter 8-2), and far which Cha}xters S-3 through 8-9 of the CHBC" may not apply, S-'i001.2 Scope. 'I`bis chapter applies to the assaeiate~ histari- cal features of qualified historical buildings ar properties such as historical dist:rict;s tlxat are beyond the baildin~s the mselves which include, but are not Is'mited tq natural featutes and designed site and landscape plans with natural ~:uxd man-made landscape elements that support their function and aesthetics. This may include, bttt will not' be lnnited to: 1. Site plan Iayaat configuratiosxs and relationshilxs (pedestrian, equestri~sn axed vehicular site circulation, tahographical grac-les and ch•ainage, and use areas}. 2. Landscape elements (plant materials, site structures other dxan tare qualified 1xisCOrieal banding, Midges and their associated structures, lighting, water features, art ornanxentation, <tnci pedestrian, equc;strian and vehicu- lar surfaces}. 3. f unctianal elements {utility placemEnt, erasion central <tnd environmental rrtitigation measures}, SECTION g-~aa2 APPLICATION $-1402.2 b'~'here the application of regttlar code may impact the associated features ofqualified historical properties beyond their faotprini~s, by work performed secondarily, those impacts shad also be covered by the CHBC. ~3-1002.3 This chapter shall be. applied fi>r all issues regarding Cade compliance ar other standard ar regulation as they affect the purpose of this chapter. 8-lt)U2.4 The application at any code ar buiIding standard shall net unduly resi:rict the use of a qualified histarical build- ing ar property tlxat is otherwise pei°nxitted pursuant to Chapter 8-3 and the intent of the State Hiszvr-rcal Buiftling C~1de, Sec- tion 1595b. SECTION s-7aaa SITE RELATIONS "the relationship between a buildin~~r ar property and its site, or the assaciatedfeattu-es of adistrict (including qualifiedhistari- caIlandscape), life, objects and their features are critical com- ponents that nxay be one of the criteria tar these buildings and properiies to be qualified tinder the C1-I>3C'. "I'he CHBC: recog- nizes the importance of these relatianslxips. This chapter shall be used tc} pravicle context sensitive solutiarts far i:reatment of qualified historical buildings, properties, district or their asso- ciated historical features, ar when work to be perfonzted sec- andarify inxpacts the associated histarical features of a gtralif-fed histarical buiIding or property, 8-1002.'1 "I`Yte CH.f3C shall apply ~~ all sites and districts and their features associated with qualified historical bundino~s or qualnied histarical districts as outlined in ~-1p01.2 Scope. 2C}10 CAL[FORNlA HISTORICAL BUlLDlNG CODE ~g ~~ 21310 CALIFORNIA HISTORICAL t3U1Lt.}ING CODE CHAPTER $-1 serving, Rehabilitating, Restoring and Reconstructing Historic When modification Ynus[ be made to quahfic;d historical build- Buildings and the, Secretary of Interior's Stand<Yrds for the ings and properties, the CHBC is intended to work in conjunc- 7~reatment «f Historic Properties witlY Guidelines for the Treat- tion with the Ctnited States Secretary of Interior Standards for tnent of Cultural Landscapes, the TreatmetYt of Historic Properties with Guidelines for Pre- CHAPTER 8-6 TABLE 1-PROVISION APPLICABILITY Title iii Title II Title III Barrier ~I Public Entities Private Entitles ', Removal SECTION 8-60F PLiRPQSE, IIVTFN`I', S(:'OPE I Applies ii Apphes Applies 8-601.1 Purpose. The purpose a#~ the CHBC is fo provide alternative regulations to facilitate access and use by persorrs with disabilities to ctrl throughout facilities designated as qualified historical buildings or properties. These regulations require I enforcing agencies to accept alten~atives to regular cede when dealing w~itlt qualified i Istorical buildings or properties. 8-601.2 Intent. The intent of this chapter is to preserve the integrity of qualified historical buildings and properties while providing access to and use by people with j disabilities. ~ 8-6t)1.3 Scope. The CHBC shall apply to every quailified historical building or property drat is required to provide access to people with disabilities. I. Pravisians of this chapter da not apply io new constnrction or recansh-uctianhcplicas of histarical buildings. 2. yYhere previsions of this chapter apply to alteration of qualified historical buildings !~ ', or properties, alteration is defined in Catr'fornici Bui7din; Cede (CBC), Chapter ?, ! ~~ Definitions and Abbreviations. 2EJ2 - A. Alter or Altc ration. 8-60L4 General application. The pravisians in the CHBC apply to local, state and federal governments ("Title II entities}; alteration of commercial facilities and places of public I, accammadatian (Title III entities}; and barrier removal in commercial facilities and places of public accommodation (Title III entities}. Except as Hated in this chapter. i ', SF:t°I'lOl~` $-602 - T3ASIC I'RGVISIC?1!S !, Applies ' Al7plies Applies 8-602.1 Regular code. "]'he regular Cade for access fat people with disabilities ('T`itle 2-~. Fart 2, VoI.I, Chapter 118) shall be applied w qualified historical buildings or properties unless strict compliance with tl~te regular code will threaten or destroy the historical significance or character-defining features of the building or property. 8-602.2 Alternative provisions. If the histarical significance ar character-defining features are threatened, alternative provisions far access may be applied pursuant to this chapter, provided the fallowing conditions are n1eC 1. These provisions shall be applied only an an item-by-item. or case-by-case basin. 2. Documentc2tian is provided, including meeting minutes or letters, stating The retrsans far the application of the alternative provisions. Such documerti<~tion shall be retarned in the permanent file of die enforcing agency. ('contiauect) 2010 CALIFORNIA HISTORICAL BUILDING CODE 25 APPENDfX A TABLE i-PROVfSION APPLICABfLITY-continueri Title III ~ ~ Tilde II ~ Tine ill Bar€ler ~. ___ ~ _ Public Entities ,Private Entities ~ Removal _ 'iEC"1'It}N 8-603 - AL"T'E,i2NA"1'I~'1F:S 1 $-603.1 Alternative minimum standards. The alternative minimum standards for ', Applies Applies Applies alterations of qualified historical buildings or facilities are contained in Section 4.1.7(3} of ADA Standards for Accessible Design, as incorporated and set forrth in federal I I i regulation 28 C.F R. Pt. 36. $-603? EntrF. '1 hose alte.rn ~tives do not allow exceptions for the regniremerrt of Level i Applies Applies Applies ~ landings in front of doors, € x~ept as provided in SectxSn &-(03.4. I. A~C't;5s to any entrance used by the general public ,~~nd no further than 2t)0 fee[ ', fb4 960 rnen t from the primary entrance. ' ~ -, . Ae,cess at any entrance not used by general pablrc but open and unloclted with I drreetionai signs at the primary entrance and as dose as possible to, but no further i th to 240 feet {60 9fr4 mm)1`rom, the prnnary entrance. 3, The accessible entrance shall have a notriication system. Where secw-ity is a ~, prnhfem, remote monitoring may he used. I ~ 8-603.3 I)aors. Alterratives listed in order of priority arc: 1?ues not Does not ~ Alrp(ies ! 1. Single-deaf door which provides a minimum 30 inches {762 mm) of clear opening. ~ apply apply ~ 2, Suigle-teal` door which provides a minimwn 29'1, inches (749 mm} clear opening. 3. Iaouble door, one leaf of which provide., a minimum 291, inches (749 mm j dear j opening*. 4. Double, doors operable with apower-assrsl dc,viee to prop rde a minimum 29`1_, ~ ~ inches (749 mrn} clear opening w[~en both doors are in the open position. ~, ~ i Exception: Alternatives in this sectiar~ do not apply to alteration ofcammercial facil- ides and places of public accommodation ("Citle III entities). ~ ~ 8-603. Pow=er-assisted doors. Pow: r ,~~.,i,t~d door or doors may be comrdered an i Applies Applies ~ Apphes equivalent alternative to level landing, ,rril~.;:;ide clearance and door-opening„ forces required by regular code. 8-603.5 Toilet roams. In lieu of separate-gender toilet facilities as required in the regular Appliea ~ Applies Applies code, an accessible unisex toilet may be designated. ~, i ~ $-6{)3,6 Exterior and interior ramps and lift`s. Alternatives listed in order of priority ~ Applies Applies Apphes arre: I i ~ j 1. A lift or a ramp of greater than standard slope but no greater than I :10, for j ~ horizontal distances not to exceed 5 f-eet (1525 mm). Signs sha11 be posted at upper and lower levels to indicate steepness of the slope. ' I 2. Arc ess by ramps of 1:6 slope for horizontal distance not to exceed l3 inches (;330 ~ ~ ~ rnmj. Signs shall be posted at upper and Iawer levels to indicate steepness of the ~ j slope. {coYrtirrued ) ~~ 2410 CALIFORNIA h1fSTORICAL BUILOfNG CO!]E APPENDIX A TABLE 1--PROVISION APPLICABILITY--cantinued Title II Title 611 Public Title III Barrier Entities Private Entities Removal SE~;C"1"IE7N 8-604 --- If`:Qtili ~I E~?v'1" l~"A£:II,ITA'i'[ON .gip;dies "t~ia9vers ~ppbes i Lse of other designs and technologies, or deviation li~om particuhu- technical and ± If a builder soaping requirements. are permitted if the application of the xi![ernative provisions i applies far a captained in Section 8-6113 would threaten or destroy the histories( significance ar ! ; waiver of an character-deFining features of the qualified histaricai building or property. ', ADA '~~ I. Such. alternatives shall be applied only ort an item-by-item or case-b}-case basis. accessibility 2. Access pravided by experiences services, fxtnctians, materials and resources regnlretnent far . tltraugh €nethads including, brrt not linuted ta, x~raps pl ,n~,, '~ „~,_ sirtt~.al reality an element of a and related equipment, at xccessrblc levels. "I'he rtlternattve d ~ it ~.ndlor building, lie or technalagies used ivi11 provide subst<xmially equivalent or cif . ~r acc,essibilit} ta, i she will pat be and usability` af, the facility. ! ~ entitled to cextific;ation's i I 3. The official charged with the enforcement of the standards shall document the ~~ rebuttable reasons far the application of the desiln~ andlor technalagies and their efTect on evidence of the htstarical ~ r liec~nee or character-detlning features. Such docarncntacion i compliance for f shall be in accoruance with Sectran 8-.t~0?.2, Item ? and shall include the opinion ~ j that element and crnnnrentr <~ ar ~<7cal accessibility officials, and the opinion artd I This limitation ~ comments ~x, ~Eratl : lacal groups of people with disabilities. Such on the ' documentation ~~~1 be retained in the permanent file ol'the enforcing agency. certification Copies o~f the reyuirad daeurnentatian shauld be available at the facility upon ~ deternrination ~ request. should be noted Note: Far cammercial facilities and places afpublic accommodation (Title III enti- ~ to tmy ties}. publication a# i Chapter Y-6 if Hquivalent facilitation for an element of a building ar property when applied as a certification is waiver at an AI},~, aces. tbihty requirement will nvt be entitled to the Federal granted. I7cpartment of .~USCIC6 certificatian of this code as rebuttable. evidence of compliance I for that e,lernent. I ~~ Notes Tfic r ~ular code for Chapter 8-6 is eontairre;d in Tirle ?~, Part 2, UoL 1. C'haprer i 1, tivltich contain standards for n~°tv construction. Provis[erns of this chapter may tie ^sed in conjmxetion evith alI other pttwisions of the regular code aud:lllA regulations. 2010 CALIFORNIA HISTORICAL BUILDING CODE 27 as zo~a cA~.~~o~rvia r~is~roR~ca~ su~~.nwr~G cone FI(STt3Y C?TE PF~ENIX c:~Lrr'tlrz~rr~ xlsrorzrc~~: roc%IL~~~~~G CoU~ {'t'itle 24, Part 8, California Code of Regulations} Far prior Itistor~~, see Histor~~ Note Appendix to the {., +?~'torr~i~~ Histor-ieal Buitdit~ig Code, 2001 Trienniallclition, cfi~..;tive November 1, 2002. L The. 2007 Triennial Edition, C'nl{J'orrzia 1-Iist~r•ical Euitd- ing Cc7de, was appro~~ec~ bye the California Bnildin~ Standards Connnission on Januar}~ 29, 2007. The Califonlia Building Standards (..ommission esttiblished January 1, 2{.}f)4, as the effective date. 2. F,ditorial correetionto Chapter 8-4, Section 8-412, Tables 4-4A and 4-48. Inch~cle missing tables in 2007 annual cczde adoption supplement. 2010 CAI.IFORNfA tiISTORiCAL BUtLDiNG CODE 29 ao zoyn cAUFaRNia N~sTa~acA~ gu~cair~G coax