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3 <br />v <br />S <br />DO <br />00 <br />0 <br />NI) <br />LLi <br />LO <br />0 <br />C <br />Cr <br />CD <br />O <br />J <br />n <br />iL0 <br />0 <br />I <br />M <br />S <br />CY- <br />L0 <br />O <br />M <br />L0 <br />rr <br />r <br />V) <br />Q <br />O <br />J <br />N <br />O <br />O <br />LO <br />L0 <br />9) <br />a <br />N <br />0 <br />L <br />3 <br />IV— <br />Q <br />N <br />N <br />a <br />O <br />E <br />O <br />S <br />L <br />c <br />N <br />E <br />0 <br />U <br />I <br />CU <br />0 <br />a: <br />0 <br />01 <br />J <br />t%. <br />N <br />N <br />N <br />N <br />0 <br />a <br />O <br />d <br />r) <br />N <br />O <br />N <br />S <br />Q <br />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 <br />of vented <br />IN. of <br />of <br />ventilation to <br />SO.Ventilators <br />of <br />of <br />ventilation <br />soffit <br />ventilation <br />vented <br />be provided <br />en ila <br />Ventilation <br />Ventilation <br />enQ. ila <br />See Elev <br />( ) <br />required <br />needed <br />required <br />soffit <br />by upper <br />needed <br />ventilators <br />Main <br />0 <br />0 <br />Floor <br />30 <br />29 <br />4 <br />14 <br />1 <br />7 <br />0.0 <br />0.0 <br />0.0 <br />(Zone 1) <br />Upper <br />16 <br />2 <br />Floor <br />1820 <br />1747 <br />250 <br />874 <br />62 <br />437 <br />516.0 <br />240.0 <br />276.0 <br />(Zone 2) <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 />-1 <br />SPACE <br />FT. <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 / 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 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 />ROOF PLAN - ELEV-B1 <br />SCALE: Y4"=V-0" <br />,N <br />fat <br />cm <br />cm <br />c%d <br />a� <br />cc y, <br />c c3e�C", <br />(f,R <br />E', <br />C3 <br />p <br />tq p} <br />F(tP <br />4 B 0,%�YI�A�Ai��idl <br />NJ <br />C �- <br />r <br />To the best of the Engineers knowledge, information and belief, <br />the structural plans and specifications contained <br />within these <br />drawings comply with the 2020 Florida Building Code - <br />Residential 7th Edition. 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