Laserfiche WebLink
ATTIC VENTILATION CALCULATIONS - Al (TRA <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 />of vented <br />IN. of <br />of <br />ventilation to <br />SQ. IN. of <br />SQ. IN. of <br />Ventilators <br />ventilation <br />soffit <br />ventilation <br />vented <br />be provided <br />Ventilation <br />Ventilation <br />( See Elev) <br />required <br />needed <br />required <br />soffit <br />by upper <br />needed <br />ventilators <br />Main 29 1 <br />Floor 2373 2278 325 1139 81 570 573.0 <br />(Zone 1) 435.0 138.0 <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-Al <br />SCALE: %4'=l'-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 / SQ. FT. <br />• STUCCO SOFFIT VENTS - 126 SQ. IN. OF NET FREE AREA / SO. FT. <br />.ff 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 />O <br />CV <br />CG <br />,, <br />LEWKO ,,� <br />o <br />�,. P <br />%�� .•'D.. <br />ENSE••• d',�%, <br />••.•* <br />PE78750 <br />No <br />w r <br />* � <br />r <br />Cr <br />i'�'• STAt <br />.74u- <br />�,� <br />seI <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 />- <br />Residential 7th Edition. Engineers signature and seal <br />is only for <br />the structural engineering portions of the drawing pages bearing <br />Engineers signature and seal. <br />Yt <br />n <br />H <br />Q <br />n <br />g E <br />N" J <br />O N 8Im <br />0 <br />c`a <br />tit <br />0 <br />�,na�or�i <br />rn n h LL W _ <br />ej040 a <br />SY, <br />�pp LL LL d W <br />13Z <br />SSG <br />t W CS 0 O W <br />W <br />:GE'4Gx__' <br />Cc 00-J d <br />C�& <br />W <br />Z <br />I IL <br />Co 6 ¢ a <br />LOMz I%n 0 <br />S y <br />Z <br />W <br />OU <br />❑0O <br />U <br />Z N c7 <br />Z � [yjtK�l <br />Z � <br />J <br />013 <br />C�C <br />O <br />1W <br />T <br />.0 <br />V) Il <br />W <br />y <br />m <br />O <br />w o <br />N <br />c� <br />C <br />W <br />(� <br />r— in <br />w <br />_ W <br />U o <br />C t <br />Q Y <br />• <br />N � <br />O <br />W <br />2 <br />M <br />io <br />W C <br />E <br />-0 <br />ZO <br />Q <br />N v <br />WZ <br />�o <br />X Uj <br />o2 <br />wp <br />U <br />Z <br />C <br />00 <br />N <br />$z <br />ao <br />V <br />iZ <br />�z <br />c <br />- c <br />=S <br />m� <br />Zz <br />Z.- <br />J <br />�Z <br />Qw <br />oa <br />W <br />r <br />LL <br />�LL <br />a <br />N W <br />�cs <br />�W <br />�d <br />zl� <br />a <br />OO 3 <br />O <br />Lo <br />1..L <br />N <br />,s <br />rO <br />W <br />0 <br />L <br />^' <br />W <br />� <br />0 <br />i <br />U <br />LO <br />CN <br />^ <br />' <br />O <br />O <br />nQ <br />1..� <br />m <br />co <br />C <br />0 <br />E N <br />O <br />— <br />2 <br />rn rn <br />00 N <br />LO <br />r <br />r <br />000 <br />r <br />E <br />N <br />M <br />o <br />z <br />z <br />E O <br />a <br />E <br />m <br />JOB <br />NO: <br />21-2032 <br />SCALE : <br />AS NOTED <br />SHEET NO. <br />5 <br />