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ti- <br />ATTIC VENTILATION CALCULATIONS - Al <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 <br />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 save or comics vents. <br />ATTIC Provided <br />SPACE SQ. FT. SQ. IN. of by Upper <br />-CALCULATIONS BASED ON THE FOLLOWING VALUES, SEE ROOF PLAN" <br />SQ. IN. of SQ. �• Total SQ. <br />of ventilation to SQ. Ventilators <br />IN of vented IN. of of SQ. IN. of <br />(Values to be verified with Manufacturer Specifications) <br />- OFF -RIDGE VENTS 138 SO. IN. OF NET FREE AREA / UNIT <br />. <br />ventilation vented be provided (See Elev) <br />required soffit ventilation Ventilation Ventilation <br />by <br />- SOFFIT VENTS 7 SO. IN. OF NET FREE AREA / SQ. FT. <br />needed required soffit upper <br />- STUCCO SOFFIT VENTS - 126 SQ. IN. OF NET FREE AREA / SO. 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) 19 =(Linear Ft. of Deck -Air Needed) <br />Main <br />28 1 <br />Floor <br />2373 2278 325 1139 81 570 558.0 <br />(Zone 1) <br />420.0 138.0 <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 />o <br />i" <br />Ia <br />0 <br />I <br />T <br />I <br />LO I <br />RIDGE ' <br />I <br />I <br />' 4'-0' RIDGE VENT I <br />3'-0' <br />I <br />I w I <br />a. <br />a <br />O <br />Iti�A <br />cn <br />I 0 <br />I I <br />RIDGE <br />1 V-0' RIDGE VENT <br />I <br />Q <br />ILU <br />L <br />0 <br />I <br />5:12♦ SLOPE z <br />9<<ccjr <br />N <br />' <br />> <br />14'-O' RIDGE VENT <br />O <br />' Q <br />RIDGE <br />O <br />I � <br />I <br />I <br />I <br />I <br />5:12 SLOPE <br />� <br />I <br />I <br />I <br />I <br />Lu <br />N <br />I <br />I <br />I <br />I <br />ZONE-1 <br />I <br />ATTIC SPACE <br />I <br />I <br />2373 SQ. FT. <br />I <br />O <br />1'-0 <br />ROOF PLAN - ELEV-Al_ <br />SCALE: Y4"=l'-0" <br />V <br />0 <br />CV c <br />O YA <br />n O <br />tf 4 <br />—.omx <br />!2 C <br />H y O A <br />a� <br />y c <br />CO s <br />Ta <br />u y <br /><; c ca <br />c <br />o <br />Ls��?lt:?64!df1�p7/ZIA <br />L <br />jE <br />y �r •'Q) w <br />l..e ; e•" .;La <br />�, <br />At <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 Code - <br />Residential 7th Edition. 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