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0 <br />J <br />N <br />r7 <br />ATTIC VENTILATION CALCULATIONS - B1 TRB) <br />ATTIC VENTILATION REQUIRED I UPPER VENTILATION PROVIDED <br />1/150 Rule <br />1l300 Rule <br />Ridge <br />Off -Ridge <br />(No Upper Ventilators <br />(Must Provide Upper Ventilators) <br />Vent Amt <br />Amt. <br />Req.) <br />(Ft) <br />Total <br />Ventilation <br />ATTIC <br />Provided <br />SPACE <br />SQ. FT. <br />Total SQ. <br />SQ. FT. <br />SQ. IN. of <br />by Upper <br />SQ. IN. of <br />of vented <br />IN. of <br />of <br />ventilation to <br />SQ. IN. of <br />SQ. IN. of <br />Ventilators <br />ventilation <br />soffit <br />ventilation <br />vented <br />be provided <br />Ventilation <br />Ventilation <br />See Elev <br />( ) <br />required <br />needed <br />required <br />soffit <br />by upper <br />needed <br />ventilators <br />Main 21.00000 2.000000 <br />Floor 2377 2282 326 1141 81 570 0 591.0 <br />(Zone 1) 315.0 276.0 <br />"NOTE* <br />GENERAL CONTRACTOR MUST ENSURE THAT PROPER VENTILATION IS PROVIDED AT EAVESISOFFITS AS <br />REQUIRED BY FBC 6th ED. RESIDENTIAL. <br />ROOF PLAN - ELEV-B1 <br />SCALE: 1/4"=1 `-0" <br />Attic Ventilation <br />Attic Ventilation to be in compliance with the Florida Building Code 7th Edition <br />(2020) Residential R806, <br />The Minimum net free ventilating area shall be 1/150 of the area of the vented <br />space. The ventilating area may be reduced to 1/300 provided that at least 40% <br />but no more than 50% of the required ventilation is provided in the upper portion c <br />the space to be ventilated. Upper ventilators shall be located no more than 3 feet <br />(measured vertically) below the ridge or highest point of the space, with the <br />balance of the required ventilation provided by eave or cornice vents. <br />-CALCULATIONS BASED ON THE FOLLOWING VALUES, SEE ROOF PLAN" <br />(Values to be verified with Manufacturer Specifications) <br />• OFF -RIDGE VENTS 138 SQ. IN. OF NET FREE AREA / UNIT <br />• SOFFIT VENTS 7 SQ. IN. OF NET FREE AREA / SQ. FT. <br />• STUCCO SOFFIT VENTS - 126 SQ, IN. OF NET FREE AREA / SQ. FT. <br />`If not enough vented soffit is provided due to fire protection, the contractor shall use th <br />following approved vents: <br />• LOMANCO DECK -AIR (Shingle Roof) - 9 SQ. IN. OF NET FREE AREA / FT. <br />Formula: (Sq. Ft. Soffit Needed) x 7 = (Sq. In. Needed) / 9 = Linear Ft. of Deck -Air Needed) <br />® <br />O <br />c� <br />1 <br />iltfl,r�f/, <br />"�*e% <br />r 'SE <br />.0 <br />" 4Z <br />/ <br />lu <br />4 <br />�r��h((iica�ilkgA�s��'1 <br />To the best of the Engineer's knowledge, information and belief, <br />the structural plans and specifications contained within these <br />drawings comply with the 2020 Florida Building Code - <br />Residential 7th Edition. Engineer's signature and seal is only for <br />the structural engineering portions of the drawing pages bearing <br />Engineer's signature and seal. <br />N <br />H <br />Q <br />CD <br />n <br />o E <br />O M N r Rk <br />O (V J <br />m G J LL <br />N N O LL (LL. d <br />Q <br />N M a N O <br />LL LL a Lu <br />Z <br />J <br />0 <br />0o <br />i <br />cc <br />�• 9 O <br />02IM <br />Z <br />MZ� a 0LLZ <br />V <br />aU) <br />U J <br />W <br />❑❑❑ <br />V M � <br />N <br />z <br />tpppggqh <br />J <br />U) <br />V) <br />N <br />M <br />z <br />Qj <br />C9 0 <br />u/ LL <br />- ' <br />W <br />M a <br />m <br />U <br />g <br />V) <br />I ^ <br />C N <br />® <br />U C <br />UJ <br />.0 <br />U o <br />o <br />• <br />N <br />O <br />W <br />M <br />o <br />op <br />z <br />< <br />LL <br />pp <br />E O <br />zo <br />o� <br />� <br />>N <br />�aR <br />z <br />F—(O <br />¢ <br />sO <br />o5 <br />Up <br />oU <br />❑z <br />z <br />O E <br />N <br />Oz <br />o <br />ao <br />a Z <br />i <br />¢o <br />ww <br />wo <br />C <br />�= <br />z <br />Szz <br />m O <br />z <br />Cu <br />J <br />w <br />Q W <br />� z <br />to <br />co <br />i e0 <br />z <br />ao <br />W <br />O <br />v <br />o¢ <br />LL <br />-, <br />LL <br />N W <br />� k <br />o <br />w <br />w� <br />2o <br />�_ <br />Will <br />co <br />v <br />z<T3 <br />a <br />0 O <br />0 <br />.{. <br />j' ^ <br />W! <br />rr <br />a...aa..... <br />L <br />cD <br />U <br />M <br />N <br />T— <br />�. <br />> <br />O <br />Q <br />CL <br />04 <br />V/ <br />T <br />�' <br />CQ <br />r <br />LO <br />r <br />T <br />.ice <br />000 <br />E <br />M <br />o <br />Z <br />E Q <br />E <br />2 <br />c`o <br />c <br />a <br />U � <br />Q p <br />JOB <br />NO: <br />20-8083 <br />SCALE : <br />AS NOTED <br />SHEET NO. <br />5 <br />