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ATTIC VENTILATION CALCULATIONS - 131 <br />ATTIC VENTILATION REQUIRED UPPER VENTILATION PROVIDED <br />1/150 Rule 1/300 Rule Ridge Off -Ridge <br />(No Upper Ventilators (Must Provide Upper Ventilators) Vent Amt Amt. <br />Req.) (Ft.) <br />ATTIC <br />SPACE <br />SQ. FT. <br />Total SQ. <br />SQ. FT. <br />SQ. IN. of <br />SQ. IN. of <br />of vented <br />IN. of <br />of <br />ventilation to <br />ventilation <br />soffit <br />ventilation <br />vented <br />be provided <br />required <br />needed <br />required <br />soffit <br />by upper <br />needed <br />ventilators <br />Total <br />Ventilation <br />Provided <br />by Upper <br />SQ. IN. of SQ. IN. of Ventilators <br />Ventilation Ventilation (See Elev) <br />Main 0 0 <br />Floor 35 34 5 17 1 8 0.0 <br />(Zone 1) 0.0 0.0 <br />Upper 9 2 <br />Floor 1533 1472 210 736 53 368 - 411.0 <br />(Zone 2) 135.0 276.0 <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 />'-ONE-1 <br />JTIC SPACE <br />'15 SQ. FT. <br />ROOF PLAN <br />SCALE: Y4"=l'-O" <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 SO. 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 the <br />following approved vents: <br />LOMANCO DECK -AIR (Shingle Roof) - 9 SO. 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 />C14 <br />C�- <br />C14 <br />L E Vvjr6'F..,r <br />No F�787 <br />S T ..E 0 F <br />UJ Z <br />A, r <br />N A <br />"stillw0" <br />To the beat 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 sea] <br />- <br />is only for <br />the structural engineering portions of the drawing pages bearing <br />Engineers signature and seal. <br />14 <br />E <br />COD C') 8 4t <br />C-4 C, _j <br />CS g u;- <br />2 % Uj <br />F. P4. 42 Lu tL <br />C4 c�' - LL 0- <br />u:l <br />C� <br />z <br />0 <br />0 <br />0 <br />:g V 0 <br />= P g <br />Z <br />tLILW <br />ig (:) <br />A cc 0 <br />< <br />0 <br />cli M 0 <br />< <br />z <br />W <br />000 <br />0 <br />V) <br />0 <br />4- <br />LU <br />U <br />0 <br />LAJ <br />C) <br />L u <br />4=) <br />Cl> <br />_j <br />U_ <br />E <br />0i <br />90 <br />E <br />zE <br />C'4 <br />t <br />�O <br />H <br />M <br />C <br />'0 <br />z(33 <br />i� <br />Uz <br />J� <br />W. <br />W <br />L <br />-1 <br />0 <br />NJ <br />.0c) <br />C.0 <br />cri <br />(0 <br />0 <br />0 <br />C) <br />> <br />0 <br />4) <br />0 <br />04 <br />> <br />2 <br />C) <br />C <br />(0 <br />rl%- <br />0 <br />E <br />LO <br />ILL J <br />C) <br />C� <br />00 C-4 <br />00 (0 <br />Lo <br />E <br />CN <br />o) <br />C') <br />0 <br />z <br />M <br />z <br />E C) <br />E <br />�j <br />4) <br />(L <br />0 <br />0 <br />< <br />JOB <br />NO: <br />21-2023 <br />SCALE : <br />AS NOTED <br />SHEEr NO. <br />5.0 <br />