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9 <br />N <br />N <br />0 <br />ATTIC VENTILATION CALCULATIONS <br />- Al (TRA) <br />Attic Ventilation <br />ATTIC VENTILATION REQUIRED <br />UPPER VENTILATION PROVIDED <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 />1/150 Rule <br />1/300 Rule <br />Ridge <br />Off -Ridge <br />space. The ventilating area may be reduced to 1/300 provided that at least 40% <br />(No Upper Ventilators <br />(Must Provide Upper Ventilators) <br />Vent Amt <br />Amt <br />but no more than 50% of the required ventilation is provided in the upper portion of <br />Req.) <br />(Ft.) <br />the space to be ventilated.Upper ventilators shall be located no more than 3 feet <br />Total <br />(measured vertically) below the ridge or highest point of the space, with the <br />Ventilation <br />balance of the required ventilation provided by eave or cornice vents. <br />ATTIC <br />SPACE <br />SQ. FT. <br />SQ. IN. of <br />Provided <br />by Upper <br />—CALCULATIONS BASED ON THE FOLLOWING VALUES, SEE ROOF PLAN** <br />SQ. IN. of SQ. FT, <br />Total SQ. <br />of <br />ventilation to <br />Ventilators <br />(Values to be verified with Manufacturer Specifications) <br />ventilation of vented <br />IN. of <br />vented <br />be provided <br />. . <br />SQINof <br />. . <br />SQINof <br />(See ) <br />SE <br />OFF -RIDGE VENTS - 138 SQ. IN. OF NET FREE AREA /UNIT <br />required soffit <br />ventilation <br />soffit <br />by upper <br />Ventilation <br />Ventilation <br />■ SOFFIT VENTS 7 SO. IN. OF NET FREE AREA / SQ. FT. <br />needed <br />required <br />• STUCCO SOFFIT VENTS 126 SQ. IN. OF NET FREE AREA / SQ. FT. <br />needed <br />ventilators <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) 19 = Linear Ft. of Deck -Air Needed) <br />Main 29 1 <br />Floor 2373 2278 325 1139 81 570 <br />(Zone 1) 435.0 138.0 <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 />573.0 <br />ROOF PLAN - ELEV-Al <br />SCALE: /4'=1 r-0" <br />Q V — <br />a �. <br />5 <br />E L0 *'8 <br />a <br />R0�ESS10'a <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. Engineer's signature and seal is only for <br />Me structural engineering portions of the drawing pages bearing <br />Engineer's signature and seal. <br />Q <br />n <br />a0 <br />g 8 �i rt <br />N J <br />U. <br />7—o00 w ;'k LL W <br />N N O LL a S <br />a <br />=JLL aW <br />LL <br />Ti <br />Mo <br />L ko0 4 S <br />Z <br />N m of � <br />Aia <br />7' <br />us <br />Z <br />a <br />N MZ y O <br />O U U_j N <br />W <br />DOD <br />(D <br />z <br />Z n <br />J <br />tl <br />E3 <br />''znn CC <br />V O <br />1 lMe <br />�U <br />N LL <br />O—� <br />W 8 <br />in <br />c ?_ <br />' ® <br />L <br />_ <br />m $ 8 <br />t <br />• <br />Q <br />w <br />r` <br />w <br />M <br />Z <br />�d <br />0 <br />w <br />o u <br />2 Q <br />C) <br />E V <br />I_ ro <br />ol <br />U <br />0 o <br />cc <br />O C <br />N (O <br />°ems <br />�i <br />a <br />wS <br />oa <br />az <br />w w <br />L <br />r0 <br />Ada <br />x w <br />m <br />F O <br />�` <br />y8 <br />gz <br />'<W <br />z <br />in <br />ow <br />iz <br />o <br />ff <br />U <br />a W <br />W <br />J <br />o <br />Z <br />w <br />w <br />�I0 <br />� <br />a� <br />o <br />u3 <br />�L <br />J <br />m <br />A, <br />W <br />@ <br />c7 <br />> <br />■_ <br />00 <br />U <br />_0) <br />oo­%. <br />Q <br />C <br />> <br />O <br />0 <br />s <br />m <br />W <br />C <br />r <br />co <br />= <br />14, <br />T <br />04 <br />r <br />Lo <br />00 <br />00 co <br />N <br />r <br />o <br />M T <br />M <br />Ni r <br />2 <br />Z <br />ON <br />E <br />d <br />d <br />U ,J <br />Q a <br />J <br />JOB <br />NO: <br />21-1071 <br />SCALE : <br />AS NOTED <br />SHEET NO. <br />5 <br />