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my <br />ATTIC VENTILATION CALCULATIONS <br />- 131 <br />ATTIC VENTILATION <br />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 />— - <br />- <br />Total <br />Ventilation <br />ATTIC <br />Provided <br />SPACE SQ. FT. <br />Total SQ. SQ. FT. SQ. IN. of <br />by Upper <br />SQ. IN. of <br />of ve nted <br />IN. of of ventilation to <br />SQ. IN. of <br />SQINof <br />Ventilators <br />ventilation <br />soffit <br />vented be provided <br />ventilation <br />Ventilation <br />. . <br />Ventilation <br />( See Elev) <br />required <br />needed <br />required soffit by upper <br />needed ventilators <br />Main 0 0 <br />Floor 35 34 5 17 1 8 _ ___ __ 0.0 <br />(Zone 1) 0.0 0.0 <br />Upper 9 2 <br />Floor 1 1533 1472 210 736 53 368 411.0 <br />(Zone 2) 135.0 276.0 <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 />'-ONE-1 <br />ATTIC SPACE <br />�5 SQ. FT. <br />ROOF PLAN. <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 SO. 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 />..•;�i �lLlRlt�l <br />�illfr���A <br />...a <br />1) tr"b ,%, •*11 <br />tJW <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 <br />Florida Building <br />Code - <br />Resldentlal 7th Edition. Engineer's signature and seal is only for <br />the structural engineering portions of the drawing pages bearing <br />Engineer's signature and seal. <br />F <br />a <br />E <br />o <br />� <br />pip >t <br />0 <br />N p C <br />GU f�/1 <br />LL <br />Yt LL W <br />N <br />rnir- P�. :R <br />w a <br />(' <br />O <br />Z <br />mca' <br />t co C _ <br />O <br />O I— <br />' <br />W <br />� 'kp N (O <br />� <br />oa <br />Z <br />LL <br />. .4c <br />,n M <br />N Z <br />a <br />qLO <br />Z <br />O U <br />U i N <br />0^ <br />N M <br />z_ <br />Q Q <br />n <br />N <br />M <br />N <br />C3 <br />nF <br />J <br />113 <br />LL <br />W <br />yy <br />OW <br />8 <br />L y <br />1.7�va.ti <br />U <br />• <br />C <br />C7 <br />w <br />M <br />i <br />o <br />_1 <br />L.L <br />E <br />,7 <br />w <br />g� <br />Z O <br />O <br />E U <br />N 6�o <br />oa <br />W <br />N ro <br />tt� <br />Cp <br />� <br />g� <br />z <br />N <br />O <br />a O <br />W <br />� <br />U <br />a� <br />�a <br />w <br />r77 <br />O <br />SO <br />¢ <br />c7 <br />p O <br />a <br />V <br />2¢ <br />U <br />U� <br />p <br />J <br />'� <br />OCl) <br />CO <br />`` <br />L <br />c <br />CM <br />> <br />co <br />_j <br />M <br />'�. <br />CD <br />O <br />m <br />U <br />CO <br />F—Lo <br />�- <br />-� <br />Z <br />= C14 <br />T— <br />N <br />= M <br />op O <br />0 <br />COc� <br />rn LO <br />N <br />N <br />r- <br />o <br />z <br />�, <br />Z <br />E O <br />�; <br />c <br />c <br />it <br />E <br />U _j <br />Q p <br />.m <br />JOB <br />NO: <br />21-1068 <br />SCALE : <br />AS NOTED <br />SHEET NO. <br />5.0 <br />