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is chosen for compliance withIT Buildina Code re uirements for a smokecroof enclosure,ITITITinterior_ exit <br />stairways or ramps shall be pressurized towwa..minimum of 0.10 inches of water (25 Pa) and a maximum of <br />0.35 inches of water 87 Pa in the shaft relative to the building measured with all interior exit stairway and <br />rams) doors closed under maxim um_antici ated conditions of stack effect and wind effect. Such systems <br />shall comply with Section _909 _.includin the installation of a separate fire-fighter's smokecontrolravel as <br />.W._ <br />per Section 909.16 and a Smoke Control Permit shall be re uired from the Fire Department asper Section <br />105.7. <br />[F] 909.22.1 Ventilatin a ui ment. The activation of ventilatinrLeoui merit for the stair or ram <br />r <br />pressurization system shall be„ by smoke detectors installedµ at each floor level at an approved location at <br />theentranceto the smokecroof enclosure.wwwWhen the closing device forthestairway or ramp shaft and <br />vestibule doors is activated bloke -detection or power failure mechanical_we ui ment shall activateand <br />overate at the reguired performance levels Smoke detectors shall bemminstalled wwwin accordance with Section <br />907.3. <br />[F] 909.22.1.1 Ventilation systems. Smoke roof enclosure ventilation s stems shall be independent of <br />other building _ventilation s stems. The ea ujip.MgflL control wiringrover er wiring andwwwductwork shall comI <br />with one of the followin_ <br />1.Eguipment control wirin ower wiring andww_ductwork shall be located exterior to the building <br />and direct connected to the smokeproof enclosure or connected to the smokeoroof enclosure <br />bb�twork enclosed by not less than 2 -hour, firebarriersconstructed in accordance with <br />Section 707 of the ITIT-Buildup+ Code or. horizontal assembliesconstructedin accordance with <br />Section 711 of the Building Code, or both. <br />2. E ui merit, control wiring, Dower t is a: ductwork shall be {oratedwithithesnokP oafw. ;@ <br />enclosure with intake ITor-exhaust directly from and to the outside... <br />wor through ductwork enclosed <br />tib not less than 2 -hour barriers constructed in accordance with Section707 of the Building Code <br />or horizontal assemblies constructed in accordance with Section 71µ1µw of the Building Code, or <br />both. <br />3• Egui merit control wiring,._power wiring and ductwork shall be located within the buildin if <br />separated from the remainder of the building including other mechanicsµ) eqW ment by, less <br />than w_2 hour fire barriers constructed ITITin-accordance with Section 707 of theBuildingCode or <br />horizontal_ assemblies constructed in accordance with Section 711 of the Buildin µCode, or both. <br />tions: <br />Excep <br />1. Control wiring and power wiri A. utilizing a 2 -hour rated cable or cable sstem. <br />2. Where encased with not less than 2wwinches i51 mm) of concrete. <br />3uwwCwontrol wiring and cower wiringmnrotected__bv_a listed electrical circuit protectives s terns with a <br />fire -resistance rating of not less than hours. <br />[F] 909.22.1.2 Standby ower. Mechanical vestibule and stairway and ramp shaft ventilation s stems and <br />automatic fire detection systems shall be provided with standby power inITaccordance with Section 2702of <br />the Building Code. <br />[F] 909.22.1.3 Acceptance and testing. Before the mechanical a ui merit is a roved, the s stem shall <br />be tested in the resence of_the fire code official to confirm thatthes stem,,,,is o era ratin_c in compliance with <br />these requirements. <br />Section 910.2, Where required, is amended by amending Exception 2. and Exception 3. to read as <br />follows: <br />[F] 2. Onlymanualsmoke and heat removal shall net be required in areas of buildings equipped with <br />early suppression fast -response (ESFR) sprinklers. Automatic smoke and heat removal is <br />prohibited. <br />3. Onl�r manual smoke and heat removal shall not be required in areas of buildings equipped with <br />control mode special application sprinklers with a response time index of 50(m" S)112 or less that are <br />listed to control a fire in stored commodities with 12 or fewer sprinklers. Automatic smoke and heat <br />removal is prohibited. <br />Section 910.2, Where required, shall be amended to add subsection 910.2.3. Group H, with <br />Exceptions, to read as follows: <br />[F] 910.2.3 Group_", Buildin s and aortions thereof used as a Group_ H oggggLancyw asµ follows: <br />10 2015 IBC <br />Amendments <br />