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P RI <br />ATTIC VENTILATION CALCULATIONS <br />ATTIC VENTILATION REQUIRED <br />UPPER VENTILATION PROVIDED <br />1/150 Rule <br />1/300 Rulepp <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 />19.000000 <br />2.000000 <br />Floor <br />2276 <br />2185 <br />312 <br />1092 <br />78 <br />546 <br />561.0 <br />285.0 <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 FBC 6th ED. RESIDENTIAL. <br />ROOF PLAN - ELEV-Al <br />SCALE: 14'=1 r-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 of <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 comice 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 SO. IN. OF NET FREE AREA / SQ. FT. <br />• STUCCO SOFFIT VENTS 126 SO. IN. OF NET FREE AREA / SQ. 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 />�,,,.,},t911it1f 11te <br />r <br />�.i FAO <br />• J�\ <br />•�' FLO <br />`A����r'tA�QF�SSIO�• <br />{ �i.°�rrrfrllltttdde�� <br />� <br />� <br />To the best of the Engineers knovdedge, 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. Engineers signature and seal is only for <br />the structural engineering portions of the drawing pages bearing <br />Engineers signature and seal. <br />0 <br />&n <br />r- <br />(A Q <br />2 u LLLU <br />di <br />Qy <br />rn n P LL ul a <br />_ <br />m R a Y <br />0 <br />_j LL d W S <br />O <br />_. <br />L O0 <br />O =r <br />2c, d a <br />3 <br />LLW <br />Z <br />OD ak <br />N M Z N O <br />p V v (0 <br />W <br />❑ ❑ ❑ <br />U �p <br />z_ <br />z <br />z Fil 1 <br />93 <br />d N <br />13 <br />N <br />(1) <br />T4-J <br />- N <br />z <br />U' S <br />(� <br />U <br />C_j'j <br />w W <br />0 <br />w s <br />� <br />f6 <br />C y <br />F— <br />U <br />E <br />_®r— <br />Q <br />• <br />C-4 CD <br />tOp <br />M <br />p <br />w <br />�Jy <br />z <br />3 O <br />OLL <br />g <br />¢ ZO <br />Q <br />E O <br />CIL <br />¢ <br />V OV <br />Ozd <br />Z <br />O <br />N <br />t <br />°d= <br />o <br />Sao <br />ww <br />¢2 <br />n7 <br />C <br />�gz <br />NO <br />ms <br />F O <br />YZ <br />Z�= <br />U5 J <br /><b <br />0Wo <br />iZ <br />U <br />W <br />d <br />V <br />o <br />a <br />u w <br />� G <br />o <br />=1. <br />i <br />00 3 <br />O <br />;.o <br />LL <br />L <br />c� <br />> <br />In <br />U <br />� <br />_ <br />Q <br />C U <br />� <br />'o <br />r <br />O <br />� m <br />o <br />� <br />t— <br />coo <br />.� <br />= N <br />T <br />LO <br />LC) <br />4 <br />0 <br />T <br />T <br />z <br />r <br />M <br />y <br />d <br />z <br />c <br />E 40 <br />ci <br />a <br />v _j <br />Q o <br />3 <br />JOB <br />NO: <br />20-8084 <br />SCALE : <br />AS NOTED <br />SHEET NO. <br />5 <br />