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ATTIC VENTILATION CALCULATIONS - 131 <br />ATTIC VENTILATION REQUIRED <br />UPPER VENTILATION PROVIDED <br />1/150 Rule <br />1/300 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 of vented <br />IN. of <br />of <br />ventilation to <br />SQ IN. of <br />SQ. IN. of <br />Ventilators <br />ventilation soffit <br />ventilation <br />vented <br />be provided <br />Ventilation <br />Ventilation <br />(See Elev) <br />required needed <br />required <br />soffit <br />by upper <br />needed <br />ventilators <br />Main <br />0 <br />0 <br />Floor <br />35 <br />34 <br />5 <br />17 <br />1 <br />8 <br />0.0 <br />- <br />0.0 <br />0.0 <br />(Zone 1) <br />Upper <br />9 <br />2 <br />Floor <br />1533 <br />1472 <br />210 <br />736 <br />53 <br />368 <br />411.0 <br />1 135.0 <br />1 276.0 <br />(Zone 2) <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />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 />'-ONE-1 <br />JTIC SPACE <br />,15 SQ. FT. <br />ROOF PLAN <br />SCALE: Y4"=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 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 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 I 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 />e LOMANCO DECK -AIR (Shingle R000 - 9 SQ. IN, OF NET FREE AREA I FT. <br />**Formula: (Sq. Ft. Soffit Needed) x 7 � (Sq. In. Needed) / 9 = (Linear Ft. of Deck -Air Needed) <br />A", <br />C111 <br />Cl> <br />% 00 <br />A� N <br />0 <br />4F <br />0 <br />LIJ <br />oF <br />of <br />C) �k <br />�41 <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 <br />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 />S <br />W <br />E <br />8 <br />C', <br />6 r- <br />0 <br />00 a) LL Lu <br />L,) ? 0 � , <br />r- r-- Lu <br />0 CL <br />U� <br />m LL LL <br />z <br />_j 0 <br />:� OW I <br />Nr <br />M 0 C) F- <br />-F, N (o LE 0 _.J <br />M <br />W <br />W <br />um <br />0, M, <br />U) < < <br />0 o- <br />Z <br />00 _j <br />LO C0 z w 0 0 <br />3 <br />0 < <br />0 <br />z <br />W <br />1E01 <br />o <br />X <br />4.-J <br />LU a <br />U <br />0 <br />Ln <br />Ln <br />U) <br />? <br />*> <br />I E <br />wig <br />C) o <br />U) <br />< C, <br />low <br />C:, <br />- <br />w <br />co <br />o <br />z <br />z <br />< <br />__j <br />LL. <br />E <br />65 <br />z . <br />0 <br />.- <br />z <br />< <br />E 8 <br />1z <br />. <br />w <br />z <br />CL <br />E <br />mo <br />R <br />8 <br />- <br />z <br />oo <br />0 < <br />x , <br />� z <br />C14 <br />FE <br />C <br />C <br />'0 <br />01 <br />z I <br />z <br />CO <br />loo <br />z <br />om <br />0 <br />o <br />C3- <br />8 <br />cz) <br />0 <br />C) <br />0 <br />z <br />.0 C:) <br />0 <br />(D <br />00 <br />> <br />cc <br />_j <br />-Nd <br />C:) <br />n <br />C <br />(n <br />LO <br />cc <br />:E 04 <br />T— <br />U) <br />CY) CD <br />C14 <br />T(D <br />00 <br />00 (14 <br />E <br />0) <br />co !z1% <br />0 <br />z <br />CN <br />E C) <br />C") <br />CA <br />C: <br />E <br />0 <br />'a <br />JOB <br />NO: <br />21-4276 <br />SCALE : <br />AS NOTED <br />SHEET NO. <br />5.0 <br />