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2017. Florida.Building Code - Mechani.cal; Sixth Edition <br /> First Pdriting:Jul 2017 <br /> CHAPTER4 <br /> VENTILATION ' <br /> , <br /> SECTI®N4.01 <br /> GENERAL <br /> 401:1 Scope: <br /> This chapter shall govern.the.ventilation of spaces within.a building intended to be occupied: <br /> Mechanical exhaust:systems; including exhaust systems serving.clothes..dryers and cooking <br /> appliances; hazardous exhaust systems;:dust,. stock and refuse..conveyor systems; subslab soil. <br /> exhaust systems;smoke control systems; energy.recovery.Ventilation systems and other systems <br /> specified.in Section 502 shall cornply.with Chapter 5. <br /> 401.Mhtilation.required. <br /> Every.occupied space shall be ventilated by natural means:in accordance with Section_4.02 or by <br /> mechanical:means in-accordance with Section 403. Vtiere_the_air infiltration-rate-in-a-dwelling <br /> unit-is -than-3:air changes.-per-hour when tested=with-a-blower_door=at a pressure-of 0�2=inchY <br /> water column_(50_Ea)=in.accordance witK=Section-R4.02-4:1:2=of the Florida_Building-Code;_Energy, �. . <br /> Conservation=-the,dwelling=unit-:shall-be=venti-lated-by- cehanic_al=means-in--accordance-with <br /> Section:4'03? Ambulatory. care facilities and :Group.I72: occupancies shall be.'ventilated by: <br /> mechanical:means in accordance with Section 407. .. <br /> 401.3When required. <br /> Ventilation shall.be provided during the periods that the,room or:space is:.occupied. <br />