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Working with Existing BuildingsPrimary Function Definition Examples of what is NOT primary function: Mechanical rooms,boiler rooms,supply storage rooms,employee lounges or locker rooms, janitorialclosets, entrances, corridors, restrooms34 2015 Colorado Code Consulting, LLC410.7 Alterations The accessibleroute to theprimary functionarea shall includetoilet facilities anddrinking fountainsserving the area ofprimary function.35 2015 Colorado Code Consulting, LLC410.7 Alterations Exceptions 1. The costs ofproviding theaccessible route arenot required toexceed 20 percentof the costs of thealterations affectingthe area of primaryfunction.Cost of AlterationCost of Access Route 2015 Colorado Code Consulting, LLC 2015 Colorado Code Consulting, LLC3612

Working with Existing Buildings410.7 Alterations Exceptions 2. This provisiondoes not apply toalterations limitedsolely to windows,hardware,operating controls,electrical outlets &signs. 2015 Colorado Code Consulting, LLC37410.7 Alterations Exceptions 3. This provisiondoes not apply toalterations limitedsolely to mechanical systems, electrical systems, installation oralteration of fireprotection systems & abatement ofhazardous materials 2015 Colorado Code Consulting, LLC38410.7 Alterations Exceptions 4. This provisiondoes not apply toalterationsundertaken for theprimary purpose ofincreasing theaccessibility of anexisting building,facility or element. 2015 Colorado Code Consulting, LLC 2015 Colorado Code Consulting, LLC3913

Working with Existing Buildings410.7 – Alterations Affecting an AreaContaining a Primary Function Exception 5“This provision doesnot apply to alteredareas limited to TypeB dwelling andsleeping units.” 2015 Colorado Code Consulting, LLC40410.8 Scoping for alterations The provisions ofSections 410.8.1through 410.8.14shall apply toalterations toexisting buildingsand facilities. 2015 Colorado Code Consulting, LLC41410.8.1 Entrances Accessibleentrances shall beprovided inaccordance withSection 1105. 2015 Colorado Code Consulting, LLC 2015 Colorado Code Consulting, LLC4214

Working with Existing Buildings410.8.1 Entrances - Exception Where an alterationincludes alterations to anentrance,and the building or facilityhas an accessible entrance,the altered entrance is notrequired to be accessible,unless required by Section410.7.Signs complying withSection 1111 of the IBCshall be provided. 2015 Colorado Code Consulting, LLC43410.8.2 Elevators Altered elements ofexisting elevators shallcomply with ASMEA17.1 and ICCA117.1.Such elements shallalso be altered inelevators programmedto respond to the samehall call control as thealtered elevator. 2015 Colorado Code Consulting, LLC44410.8.3 Platform lifts Platform(wheelchair) liftscomplying with ICCA117.1 andinstalled inaccordance withASME A18.1 shallbe permitted as acomponent of anaccessible route. 2015 Colorado Code Consulting, LLC 2015 Colorado Code Consulting, LLC4515

Working with Existing Buildings410.8.4 Stairways and escalatorsin existing buildings. In alterations, change ofoccupancy or additionswhere an escalator orstairway is added wherenone existed previouslyand major structuralmodifications arenecessary for installation,an accessible route shallbe provided between thelevels served by theescalator or stairways inaccordance with Section1104.4 of the IBC. 2015 Colorado Code Consulting, LLC46410.8.5 Ramps Where steeperslopes than allowedby Section 1012.2 ofthe IBC arenecessitated byspace limitations,the slope of rampsin or providingaccess to existingbuildings or facilitiesshall comply withTable 410.8.5. 2015 Colorado Code Consulting, LLC47410.8.10 Toilet rooms Where it is technicallyinfeasible to alter existingtoilet and bathing facilitiesto be accessible, anaccessible family orassisted use toiletconstructed in accordancewith 1109.2.1 of the IBC ispermitted.The family or assisted usefacility shall be located onthe same floor and in thesame area as the existingfacilities. 2015 Colorado Code Consulting, LLC 2015 Colorado Code Consulting, LLC4816

Working with Existing Buildings410.8.13Thresholds The maximumheight ofthresholds atdoorways shall be¾ inch.Such thresholdsshall have bevelededges on eachside. 2015 Colorado Code Consulting, LLC49Classification of WorkChapter 5 RepairAlteration Level 1 Level 2 Level 3 Change ofOccupancyAdditionsHistoric BuildingRelocated Building 2015 Colorado Code Consulting, LLC50Work area501.2 The work area, asdefined in Chapter 2,shall be identified onthe constructiondocuments. WORK AREA. That portion or portions ofa building consisting of allreconfigured spaces asindicated on theconstruction documents.Work area excludes otherportions of the buildingwhere incidental workentailed by the intendedwork must be performedand portions of the buildingwhere work not initiallyintended by the owner isspecifically required by thiscode. 2015 Colorado Code Consulting, LLC 2015 Colorado Code Consulting, LLC5117

Working with Existing BuildingsAlterations – Level 1Chapter 7 Level 1 alterationsinclude removal,replacement orcovering of existingmaterials, elements,equipment, orfixtures using newmaterials, elements,equipment, orfixtures that servesame purpose 2015 Colorado Code Consulting, LLC5252Alt. Level 1 Conformance701.2 An existing building orportion thereof shall notbe altered such that thebuilding becomes lesssafe than its existingcondition. Exception: Where thecurrent level of safety orsanitation is proposed tobe reduced, the portionaltered shall conform tothe requirements of theIBC. 2015 Colorado Code Consulting, LLC53Alt. Level 1 Building Elements/Materials702 All newly installed interiorfinishes to comply withflame spreadrequirements of IBCNew carpeting used asinterior floor finishmaterial to comply withradiant flux requirementsof IBCNewly installed interiortrim materials mustcomply with IBC 2015 Colorado Code Consulting, LLC 2015 Colorado Code Consulting, LLC5418

Working with Existing BuildingsFire Protection703 Alterations shall bedone in a manner thatmaintains the level offire protectionprovided. 2015 Colorado Code Consulting, LLC55Means of Egress704 Alterations shall bedone in a manner thatmaintains the level ofprotection providedfor the means ofegress. 2015 Colorado Code Consulting, LLC56Accessibility705 A building, facility or elementthat is altered shall comply withthe applicable provisions inSections 705.1.1 through705.1.14, Chapter 11 of theInternational Building Code andICC A117.1 unless it istechnically infeasible . Wherecompliance with this section istechnically infeasible , thealteration shall provide access tothe maximum extent that istechnically feasible.A facility or element that isconstructed or altered to beaccessible shall be maintainedaccessible during occupancy. 2015 Colorado Code Consulting, LLC 2015 Colorado Code Consulting, LLC5719

Working with Existing Buildings706 Reroofing Materials and methods ofapplication used forrecovering or replacing anexisting roof covering shallcomply with therequirements of Chapter 15of the IBC. Exception: Reroofing shallnot be required to meet theminimum design sloperequirement of one-quarterunit vertical in 12 unitshorizontal) in Section 1507of the IBC for roofs thatprovide positive roofdrainage. 2015 Colorado Code Consulting, LLC58706.2Structural and construction loads Structural roofcomponents shall becapable of supportingthe roof-coveringsystem and thematerial andequipment loads thatwill be encounteredduring installation ofthe system. 2015 Colorado Code Consulting, LLC59Energy Conservation708 Level 1 alterations toexisting buildings orstructures are permittedwithout requiring theentire building orstructure to comply withthe energy requirementsof the IECC or IRC.The alterations shallconform to the energyrequirements of the IECCor IRC as they relate tonew construction only. 2015 Colorado Code Consulting, LLC 2015 Colorado Code Consulting, LLC6020

Working with Existing BuildingsAlterations – Level 2801 Level 2 alterationsincludereconfiguration ofspace, addition orelimination of anydoor or window,reconfiguration orextension of anysystem, orinstallation of anyadditional equipment 2015 Colorado Code Consulting, LLC6161Alterations – Level 2801 In addition torequirements ofChapter 7, all work tocomply with Level 1provisionsAll new constructionelements,components,systems, and spacesto comply with IBC 2015 Colorado Code Consulting, LLC62Existing vertical openings803.2.1 All existing interiorvertical openingsconnecting two or morefloors shall be enclosedwith approvedassemblies having afire-resistance rating ofnot less than 1 hourwith approved openingprotectives.14 Exceptions! 2015 Colorado Code Consulting, LLC 2015 Colorado Code Consulting, LLC6321

Working with Existing BuildingsSupplemental shaft and floor openingenclosure requirements - 803.2.2 Where the work areaon any floor exceeds50 percent of that floorarea, the enclosurerequirements of Section803.2 shall apply tovertical openings otherthan stairwaysthroughout the floor. Exception: Verticalopenings located intenant spaces that areentirely outside the workarea. 2015 Colorado Code Consulting, LLC64Supplemental stairway enclosurerequirements - 803.2.3 Where the work area onany floor exceeds 50percent of that floor area,stairways that are part ofthe means of egressserving the work areashall, at a minimum, beenclosed with smoke-tightconstruction on thehighest work area floorand all floors below. Exception: Where stairwayenclosure is not requiredby the IBC or theInternational Fire Code. 2015 Colorado Code Consulting, LLC65Interior finish803.4 The interior finish of wallsand ceilings in exits andcorridors in any work areashall comply with therequirements of the IBC. Exception: Existing interiorfinish materials that do notcomply with the interior finishrequirements of the IBCshall be permitted to betreated with an approvedfire-retardant coating inaccordance with themanufacturer’s instructionsto achieve the requiredrating. 2015 Colorado Code Consulting, LLC 2015 Colorado Code Consulting, LLC6622

Working with Existing BuildingsSupplemental interior finishrequirements - 803.4.1 Where the work areaon any floor exceeds50 percent of the floorarea, Section 703.4shall also apply to theinterior finish in exitsand corridors servingthe work areathroughout the floor. Exception: Interior finishwithin tenant spaces thatare entirely outside thework area. 2015 Colorado Code Consulting, LLC67Guards803.5 The requirements of Sections803.5.1 and 803.5.2 shallapply in all work areas. Every portion of a floor, such asa balcony or a loading dock,that is more than 30 inchesabove the floor or grade belowand is not provided with guards,or those in which the existingguards are judged to be indanger of collapsing, shall beprovided with guards. Where there are no guards orwhere existing guards must bereplaced, the guards shall bedesigned and installed inaccordance with the IBC. 2015 Colorado Code Consulting, LLC68803.6Fire-resistance ratings Where approved by the codeofficial, buildings where anautomatic sprinkler systeminstalled in accordance withSection 903.3.1.1 or 903.3.1.2of the IBC has been added,and the building is nowsprinklered throughout, therequired fire-resistance ratingsof building elements andmaterials shall be permitted tomeet the requirements of thecurrent building code.The building is required tomeet the other applicablerequirements of the IBC. 2015 Colorado Code Consulting, LLC 2015 Colorado Code Consulting, LLC6923

Working with Existing BuildingsFire Protection804 Requirements limited towork areas in which Level2 alterations are beingperformed, and wherespecified they shall applythroughout the floor onwhich the work areas arelocated or otherwisebeyond the work area. Automatic Fire Sprinklers Standpipes Fire Alarm and Detection 2015 Colorado Code Consulting, LLC70Corridor ratings804.1.1 Where an approved automaticsprinkler system is installedthroughout the story, therequired fire-resistance ratingfor any corridor located on thestory shall be permitted to bereduced in accordance withthe International BuildingCode. In order to beconsidered for a corridor ratingreduction, such system shallprovide coverage for thestairwell landings serving thefloor and the intermediatelandings immediately below. 2015 Colorado Code Consulting, LLC71Fire Sprinklers - Groups A, E, F-1, H, I,M, R-1, R-2, R-4, S-1 and S-2804.2.2 work areas that have exits or corridors shared by morethan one tenant or that have exits or corridors servingan occupant load greater than 30 shall be provided withautomatic sprinkler protection where all of the followingconditions occur:1. The work area is required to be provided with automaticsprinkler protection in accordance with the IBC as applicable tonew construction;2. The work area exceeds 50 percent of the floor areaExceptions The building has sufficient municipal water supply for design of a firesprinkler system available to the floor without installation of a new firepump. 2015 Colorado Code Consulting, LLC 2015 Colorado Code Consulting, LLC7224

Working with Existing BuildingsMixed uses804.2.2.1 In work areas containing mixeduses, one or more of whichrequires automatic sprinklerprotection in accordance withSection 704.2.2, suchprotection shall not be requiredthroughout the work areaprovided that the usesrequiring such protection areseparated from those notrequiring protection by fireresistance-rated constructionhaving a minimum 2-hourrating for Group H and aminimum 1-hour rating for allother occupancy groups. 2015 Colorado Code Consulting, LLC73Standpipes804.3 Where the work area includesexits or corridors shared bymore than one tenant and islocated more than 50 feetabove or below the lowestlevel of fire department access,a standpipe system shall beprovided.Standpipes shall have anapproved fire departmentconnection with hoseconnections at each floor levelabove or below the lowestlevel of fire department access.Standpipe systems shall beinstalled in accordance withthe IBC.Exceptions:1. No pump shall be required providedthat the standpipes are capable ofaccepting delivery by fire departmentapparatus of a minimum of 250 gpm at65 psi to the topmost floor in buildingsequipped throughout with an automaticsprinkler system or a minimum of 500gpm at 65 psi to the topmost floor in allother buildings. Where the standpipeterminates below the topmost floor, thestandpipe shall be designed to meetgpm/psi requirements of this exceptionfor possible future extension of thestandpipe.2. The interconnection of multiplestandpipe risers shall not be required. 2015 Colorado Code Consulting, LLC74Means of Egress805 The requirements of thissection shall be limited towork areas that includeexits or corridors sharedby more than one tenantwithin the work area inwhich Level 2 alterationsare being performed, andwhere specified they shallapply throughout the flooron which the work areasare located or otherwisebeyond the work area. 2015 Colorado Code Consulting, LLC 2015 Colorado Code Consulting, LLC7525

Working with Existing BuildingsMeans of Egress805.2Means of egress shallcomply except: 1.2.Where the work area andthe means of egressserving it complies withNFPA 101.Means of egressconforming to therequirements of the IBCunder which the buildingwas constructed shall beconsidered compliantmeans of egress if, in theopinion of the codeofficial, they do notconstitute a distincthazard to life. 2015 Colorado Code Consulting, LLC76Minimum number of exits805.3.1 Every story utilized forhuman occupancy on whichthere is a work area thatincludes exits or corridorsshared by more than onetenant within the work areashall be provided with theminimum number of exitsbased on the occupancyand the occupant load inaccordance with the IBC. Inaddition, the exits shallcomply with Sections705.3.1.1 and 705.3.1.2. Single-exit building Fire escapes 2015 Colorado Code Consulting, LLC77Main entrance—Group A805.3.3 All buildings of Group A with anoccupant load of 300 or more shallbe provided with a main entrancecapable of serving as the mainexit with an egress capacity of atleast one half of the total occupantload. The remaining exits shall becapable of providing one half ofthe total required exit capacity. Exception: Where there is no welldefined main exit or where multiplemain exits are provided, exits shallbe permitted to be distributedaround the perimeter of the buildingprovided that the total width ofegress is not less than 100 percentof the required width. 2015 Colorado Code Consulting, LLC 2015 Colorado Code Consulting, LLC7826

Working with Existing BuildingsTwo Egress Doorways Required805.4.1 Occupant load and traveldistance. Group I-2. In buildings of Group I-2occupancy, any patientsleeping room or suite ofpatient rooms greater than1,000 square feet within thework area shall have aminimum of two egressdoorways. In any work area, all rooms andspaces having an occupant loadgreater than 50 or in which thetravel distance to an exitexceeds 75 feet shall have aminimum of two egressdoorways. Exceptions:1. Storage rooms having amaximum occupant load of 10.2. Where the work area is servedby a single exit in accordancewith Section 705.3.1.1. 2015 Colorado Code Consulting, LLC79Door swing805.4.2 In the work area and in theegress path from any workarea to the exit discharge, allegress doors serving anoccupant load greater than 50shall swing in the direction ofexit travel.Where the work area exceeds50 percent of the floor area,door swing shall comply withSection 805.4.2 throughout thefloor. Exception: Means of egresswithin or serving only a tenantspace that is entirely outside thework area. 2015 Colorado Code Consulting, LLC80Door closing805.4.3 In any work area, all doorsopening onto an exit passagewayat grade or an exit stair shall beself-closing or automaticallyclosing by listed closing devices.Exceptions:1.Where exit enclosure is notrequired by the IBC.2.Means of egress within or servingonly a tenant space that is entirelyoutside the work area. Whe

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