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111 Fnm 'I <br />ATTIC VENTILATION CALCULATIONS <br />ATTIC VENTILATION <br />REQUIRED <br />UPPER VENTILATION <br />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 />- - - --- <br />Total <br />— - <br />Ventilation <br />ATTIC <br />Provided <br />SPACE <br />SQ. FT. <br />Total SQ. SO. FT. SQ. IN. of <br />by Upper <br />SQ. IN. of <br />of vented <br />IN. of of ventilation to <br />SQ. IN. of <br />SQ. IN. of <br />Ventilators <br />ventilation <br />soffit <br />ventilation vented be provided <br />Ventilation <br />Ventilation <br />(See Elev ) <br />required <br />needed <br />required soffit by upper <br />needed ventilators <br />Main 19 2 <br />Floor 2276 2185 312 1092 78 546 —__ 561.0 <br />(Zone 1) 285.0 276.0 <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 />ROOF PLAN - ELEV-Bl <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 11300 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 ventllated.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 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 />N <br />Cd <br />N <br />CO <br />P <br />%%`� <br />.`Ko <br />E S <br />-" <br />N° <br />r <br />Cr <br />k : <br />•� ST A <br />; J-U <br />of <br />To the best of the Engineers 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. Engineers signature and seal is only for <br />the structural engineering portions of the drawing pages bearing <br />Engineers signature and seal. <br />r• <br />apM} <br />Q <br />fp <br />N J <br />N 04Go 'L <br />p <br />a, oQ to <br />r- LL W d <br />a YYn <br />ii a <br />Z <br />U_ 3 <br />J 0. O <br />Lg o <br />IY <br />§ N t0 W O J <br />'i <br />ILW <br />iQ a <br />a <br />N MZ �D0 <br />0 (0 <br />Z0 <br />W <br />_5 <br />❑ ❑ ❑ <br />CD <br />v <br />J — <br />— N <br />(((0p <br />,y^^t <br />,Wit <br />nTw' <br />Z <br />� C <br />LL <br />LU <br />0 <br />W N <br />LU <br />U <br />Q�� <br />0 <br />s <br />W <br />Z <br />M <br />J <br />11 <br />E <br />0 <br />05 <br />a dr <br />o <br />z <br />aO <br />E o <br />� <br />o <br />ZN <br />O <br />� <br />Qz <br />o <br />�ggg <br />wZ <br />� <br />«moo <br />rp <br />� <br />.yr v <br />w� <br />m$ <br />O <br />zNz <br />z'0M <br />N Jb <br />Q <br />SO <br />� <br />Q1 <br />d <br />Q <br />U <br />N <br />W <br />aa <br />rW <br />(per�p <br />a <br />O <br />eh <br />il°d <br />O1211 <br />I^ <br />.,fi / <br />(`0 <br />W <br />� <br />c <br />Y <br />N <br />Q <br />O <br />� <br />C m <br />U <br />CO <br />� <br />N <br />o <br />ch <br />N <br />r <br />= Lo <br />00 (D <br />� N <br />(„(� <br />r <br />ui <br />M <br />o <br />z <br />z <br />c <br />E O <br />E <br />�i <br />c <br />0- <br />U _j <br />Q 0 <br />JOB <br />NO: <br />21-2028 <br />SCALE : <br />AS NOTED <br />SHEET NO. <br />5 <br />