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ATTIC VENTILATION CALCULATIONS - 131 (TRB) <br />ATTIC VENTILATION REQUIRED <br />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 />required <br />needed <br />required <br />soffit <br />by upper <br />needed <br />ventilators <br />Main <br />22 <br />2 <br />Floor <br />1999 <br />1919 <br />274 <br />960 <br />69 <br />480 <br />606.0 <br />330.0 <br />276.0 <br />(Zone 1) <br />**NOTE** <br />GENERAL CONTRACTOR MUST ENSURE THAT PROPER VENTILATION IS PROVIDED AT EAVES/SOFFITS AS <br />REQUIRED BY FLORIDA BUILDING CODE 7TH EDITION (2020) RESIDENTIAL. <br />ROOF PLAN - ELEV-B1 <br />SCALE: %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 o <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 / SO. FT. <br />*If not enough vented soffit is provided due to fire protection, the contractor shall use the <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 />ca <br />l <br />g.. q�F'Fe�Bi[iid�tEe° F�f�J <br />I <br />'��•� ` s <br />`J E c6N.�l <br />v C") �r\e <br />•gyp••••,,.,.•°'•� <br />F U�- '^ <br />�^",� <br />� <br />>�•' <br />FES,}4;1e�ya� <br />To the best of the Engineers knowledge, information and belief, <br />the structural plans and specifications contained within these <br />drawings comply with the 2020 <br />Florida Building Code - <br />Residential 7th Edition. Engineers signature and seal Is only for <br />the structural engineering portions <br />of the drawing pages bearing <br />Engineers signature and seal. <br />$ <br />E <br />088 0 <br />9) <br />0 m m <br />0 <br />9 in °o a) u. Lu a <br />0tnr-�i <br />0 <br />LL w _ <br />a (�� V a YXn <br />J LL tL a W 5 <br />013 <br />0 Z <br />: <br />p� <br />o O O '01 <br />m OJ J <br />(n (� Q ¢ Q <br />Z <br />ILW <br />LL <br />N OD a <br />M Z m T O <br />Z <br />O V U s 0 <br />z <br />❑❑❑ <br />M C' <br />z N th <br />O C' <br />z m N <br />r <br />�[ v <br />J <br />d � <br />n <br />N <br />z a <br />�_ o <br />(D <br />u_ <br />1L <br />i� <br />((S <br />cn <br />w g <br />WO <br />—� <br />w g <br />N <br />IcI/^) <br />v , <br />co <br />U N <br />W J <br />mi <br />F _ e <br />s <br />�I. <br />z <br />U o 0 <br />Q Y <br />te <br />14 <br />o <br />w <br />Mw¢ <br />M <br />00 <br />z <br />< <br />J <br />Q p <br />E <br />? ¢ <br />wo <br />?® <br />u <br />co <br />�¢ <br />U0 <br />0 <br />O N <br />CV <br />4% <br />az <br />oo <br />ww <br />L <br />(6 <br />- C <br />nO <br />0 <br />ZLL <br />Vi <br />QW <br />gZ <br />o ¢ <br />Z <br />g 0 <br />a <br />T <br />U <br />< <br />ao <br />w <br />�- <br />00 <br />w <br />w <br />�2 <br />co <br />oa <br />Z. <br />a <br />0� <br />Uri <br />0 <br />� O <br />` <br />> d' <br />J <br />L <br />cc <br />/ <br />� <br />T <br />cc <br />I.a. <br />CN <br />C <br />v <br />CD <br />o <br />U <br />(0 <br />F— <br />m <br />}, <br />rn <br />T <br />co CVO <br />LO <br />... <br />= N <br />T <br />LO <br />r cV <br />00 N <br />LO <br />T <br />N <br />r <br />E <br />N <br />�' <br />0 <br />cc <br />z <br />E O <br />M <br />U J <br />Q Q <br />J <br />JOB <br />NO: <br />20-8086 <br />SCALE : <br />AS NOTED <br />SHEET NO. <br />5 <br />I T-77FT i •I I 1F .LI tf __jTLi�ePllr <br />