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S <br />rn <br />O <br />co <br />L <br />N <br />b <br />'O <br />S <br />7L <br />�O <br />O <br />-J <br />I <br />t7� <br />CD <br />N <br />C <br />N <br />C:) <br />J <br />r <br />'d <br />I <br />CLo <br />W <br />Q� <br />C <br />i <br />Q <br />Cd <br />E <br />O <br />S <br />L <br />v <br />aci <br />N <br />IM <br />E <br />M_o <br />U <br />v <br />c <br />0 <br />UI <br />N <br />U <br />N <br />2 <br />a_ <br />0 <br />0 <br />J <br />O <br />LZ <br />ATTIC VENTILATION CALCULATIONS - Al (TRA) <br />ATTIC VENTILATION REQUIRED I UPPER VENTILATION PROVIDED <br />1J150 Rule Ridge <br />1J300 Rule Off -Ridge <br />(No Upper Ventilators Vent Amt <br />Req.) (Must Provide Upper Ventilators) (Ft) Amt. <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 />( ) <br />required <br />needed <br />required <br />soffit <br />by upper <br />needed <br />ventilators <br />Main 29 1 <br />Floor 2373 2278 325 1139 81 570 573.0 <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 />ROOF PLAN - ELEV-Al <br />SCALE: %4"=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 / 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 />CV <br />O <br />CV <br />CV <br />CV <br />CY'> <br />o <br />`��� <br />9 <br />140 <br />M <br />R <br />S3� <br />� <br />�!1u <br />� <br />,tom, y, aM ��( <br />��•s <br />—/'�� <br />+✓ <br />A Y .ram q .% <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 Florida Building <br />Code - <br />Residential 7th Edition. 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