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ATTIC VENTILATION CALCULATIONS - Al (TRA) <br />Attic Ventilation <br />ATTIC VENTILATION REQUIRED UPPER VENTILATION PROVIDED <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 />1/150 Rule 1/300 Rule Off -Ridge Ridge <br />space. The ventilating area may be reduced to 1/300 provided that at least 40% <br />(No Upper Ventilators Vent Amt <br />(Must Provide Upper Ventilators) Amt. <br />but no more than 50% of the required ventilation is provided in the upper portion of <br />Req.) (Ft.) <br />the space to be ventilated. Upper ventilators shall be located no more than 3 feet <br />Total <br />(measured vertically) below the ridge or highest point of the space, with the <br />Ventilation <br />balance of the required ventilation provided by eave or cornice vents. <br />ATTIC Provided <br />SQ. FT. SQ. IN. of by Upper <br />**CALCULATIONS BASED ON THE FOLLOWING VALUES, SEE ROOF PLAN** <br />SPACE SQ. FT. Total SQ. <br />SQ. IN. of of ventilation to Ventilators <br />of vented IN. of SQ. IN, of SQ. IN. of <br />(Values to be verified with Manufacturer Specifications) <br />. OFF -RIDGE VENTS 138 SQ. IN. OF NET FREE AREA / UNIT <br />ventilation vented be provided (See Elev) <br />soffit ventilation Ventilation Ventilation <br />.SOFFIT VENTS - 7 SQ. IN. OF NET FREE AREA / SQ. FT. <br />required soffit by upper <br />needed required <br />. STUCCO SOFFIT VENTS - 126 SQ. IN. OF NET FREE AREA / SQ. FT. <br />needed ventilators <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 />Main <br />29 1 <br />Floor <br />2373 2278 325 1139 81 570 573.0 <br />(Zone 1) <br />435.0 138.0 <br />"NOTE" <br />GENERAL <br />CONTRACTOR MUST ENSURE THAT PROPER VENTILATION IS PROVIDED AT EAVES/SOFFITS AS <br />REQUIRED BY FLORIDA BUILDING CODE 7TH EDITION (2020) RESIDENTIAL. <br />I <br />I <br />M <br />ZONE-1 <br />I <br />T-0" <br />ATTIC SPACE <br />I <br />� <br />2373 SQ. FT. <br />I <br />I <br />I <br />RIDGE <br />I <br />I <br />I <br />I <br />I <br />W I <br />a <br />01 <br />o <br />co <br />T <br />T <br />I <br />I <br />di <br />I <br />I <br />RIDGE <br />15'-0' RIDGE VENT <br />LU <br />° <br />:12� SLOPE <br />Iz <br />> <br />14'-O' RIDGE VENT <br />"- <br />0 <br />0 <br />RIDGE <br />0 <br />1 1 <br />I <br />I <br />I <br />I <br />I <br />5:12 SLOPE <br />I <br />I <br />W <br />a <br />I <br />co <br />I <br />T <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />0 <br />I <br />I <br />I <br />I <br />V-0' <br />ROOF PLAN - ELEV-Al_ <br />SCALE: %4"=1'-0" <br />0.., , <br />0 <br />44 <br />C2 fi <br />N g� <br />t._ <br />+� rD <br />® (t3 Ir. 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