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ATTIC VENTILATION CALCULATIONS -Al <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 />ventilation <br />of vented <br />IN. of <br />of <br />vented <br />ventilation to <br />be provided <br />SQ. IN. of <br />SQ. IN. of <br />Ventilators <br />(See Elev ) <br />required <br />soffit <br />ventilation <br />soffit <br />by upper <br />Ventilation <br />Ventilation <br />needed <br />required <br />needed <br />ventilators <br />Main <br />13 <br />3 <br />Floor <br />2276 <br />2185 <br />312 <br />1092 <br />78 <br />546 <br />609.0 <br />195.0 <br />414.0 <br />(Zone 1) <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"=V-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 / SO. 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 />c%j <br />c� c <br />C N W <br />C%14 o <br />a o <br />Lib `6 co roc <br />m c;% .- <br />s <br />3 *` d <br />CD <br />C% ar ao <br />c � <br />ao �o <br />0 <br />J <br />¢p.rp <br />iw <br />y.. N <br />a. <br />_ <br />�; <br />4«S <br />:.a6t <br />To the best of the Engineer's knowledge, information and belief, <br />the structural <br />plans and specifications contained within these <br />drawings comply with the 2020 Florida Building Code - <br />Residential <br />7th Edition. Engineer's signature and seal is only for <br />the structural <br />engineering portions of the drawing pages bearing <br />Engineer's signature and seal. <br />V) <br />W EE <br />N <br />O <br />cli8 0 <br />V � N <br />0 0 y <br />7 u1 <br />Cn <br />l» 04 0d. # W <br />N J <br />Q J U_L- W <br />a <br />r <br />0 <br />C^cJ <br />yZ <br />L <br />ibl ``� <br />W o <br />W <br />z LO coZ Q J <br />IL� <br />N O U v 0 <br />W ❑ ❑ <br />M � <br />Z CMV M <br />O 00 <br />z <br />N <br />Z t- <br />� <br />Q � <br />J <br />CL <br />h. <br />M <br />N g <br />C9 0 <br />cr7 LL <br />W <br />O w o <br />�N in <br />(� o' <br />U <br />W <br />J <br />*— — E <br />m <br />t <br />� <br />U o <br />Q N 0 <br />4m <br />o <br />w <br />COz <br />M <br />O <br />ZZZ <br />J <br />L.L <br />Ce C <br />C <br />¢ <br />z 4 <br />Z> <br />Q a <br />U <br />o <br />¢a <br />Z <br />oa <br />w0 <br />N <br />� <br />� <br />X U <br />o0� <br />a <br />00 <br />� U <br />N fo <br />¢ <br />W W <br />i <br />o <br />rp <br />C <br />z5 <br />OY <br />U <br />O <br />' <br />Z <br />_ <br />J <br />m <br />� <br />Q W <br />In <br />F W <br />0< <br />Z Z <br />go <br />Q S <br />W ii <br />a <br />N W <br />v <br />�a <br />a <br />�k <br />z <br />o <br />o <br />O <br />FIw <br />ii � <br />N O <br />L <br />N <br />m <br />CL <br />O <br />(ID M <br />� <br />M <br />C:)W <br />'�/^�J <br />CN <br />m <br />L0 <br />Q� <br />0 <br />N <br />C:)a <br />N <br />< <br />r <br />lM <br />T <br />E <br />; <br />Q <br />o <br />Z <br />cc <br />3 iii <br />E <br />cc <br />E a ai <br />c <br />a <br />U ° Q p <br />JOB <br />NO: 22-06460 <br />SCALE : AS NOTED <br />SHEET NO. <br />5 <br />