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N <br />ATTIC VENTILATION CALCULATIONS - Al (TRA) Attic Ventilation <br />ATTIC VENTILATION REQUIRED UPPER VENTILATION PROVIDED Attic Ventilation to be in compliance with the Florida Building Code 7th Edition <br />1/150 Rule <br />(No Upper Ventilators <br />Req.) <br />ATTIC <br />(2020) Residential R806. <br />The Minimum net free ventilating area shall be 1/150 of the area of the vented <br />1/300 Rule <br />Ridge Off -Ridge space. The ventilating area may be reduced to 1/300 provided that at least 40% <br />Vent Amt but no more than 50% of the required ventilation is provided in the upper portion of <br />(Must Provide Upper Ventilators) Amt. <br />SPACE <br />SQ. FT. <br />Total SQ. <br />SQ, <br />SQ. IN. of <br />of vented <br />IN. of <br />of <br />ventilation <br />soffit <br />ventilation <br />vented <br />required <br />needed <br />required <br />soffit <br />needed <br />(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 eave or cornice vents. <br />Provided <br />"CALCULATIONS BASED ON THE FOLLOWING VALUES, SEE ROOF PLAN" <br />SQ. IN. of <br />by Upper <br />(Values to be verified with Manufacturer Specifications) <br />ventilation to <br />SQ. IN. of <br />SQ. IN. of <br />Ventilators <br />• OFF -RIDGE VENTS 138 SQ. IN. OF NET FREE AREA / UNIT <br />be provided <br />p <br />Ventilation <br />Ventilation <br />(See Elev) <br />• SOFFIT VENTS 7 SQ. IN. OF NET FREE AREA / SQ. FT. <br />by upper <br />• STUCCO SOFFIT VENTS - 126 SO. IN. OF NET FREE AREA / SO. FT. <br />ventilators <br />*If not enough vented soffit is provided due to fire protection, the contractor shall use the <br />fdlowing 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 />Main 29 1 <br />Floor 2373 2278 325 1139 81 570 <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 />573.0 <br />ROOF PLAN — ELEV-Al <br />SCALE: Y4'=l'-0" <br />�a��i��u�ttrerrrr, <br />a,i <br />N S E.' •• <br />�'°� <br />ro <br />FL <br />„:;F1at�e <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. Engineer's signature and seal is only for <br />the stnrdural engineering portions of the drawing pages bearing <br />Engineer's signature and seal. <br />(� <br />off <br />0 J LL <br />" <br />Q <br />'9 ;n ao �, vc <br />(/)w a <br />0 <br />Q <br /><L a. <br />yM7 <br />� LL. U- a W S <br />Z <br />O <br />cm,� <br />(O tY O J <br />W��QjOf <br />N <br />T• <br />LL L <br />a <br />MZrYy0 <br />= <br />N <br />OU ai <br />W <br />❑�❑ <br />0 I <br />t$ <br />z N � <br />z <br />Z O <br />J 7 <br />d <br />(n <br />V) <br />,,znn cc <br />Q) <br />V O <br />�U <br />C—. <br />W W <br />p <br />0 <br />W s <br />tJl <br />�N <br />c .mod. <br />� <br />(� <br />r— rn <br />• <br />o <br />w <br />z <br />M <br />i; . <br />2 <br />LL <br />0 <br />z0 <br />ao <br />o0 <br />>� <br />aR <br />z® <br />Q <br />O <br />N <br />H f0 <br />Fi <br />i O <br />R' <br />oa <br />U O <br />oU <br />z—a80z <br />N r0 <br />CD�g <br />¢ <br />w w <br />rp <br />-C <br />__ C <br />s <br />.2 <br />m� <br />O <br />z <br />z <br />N <br />J <br />aw <br />sm <br />r� <br />z ZO <br />nz <br />W) <br />U <br />2 LL�W <br />o <br />'o <br />zlaT0 <br />3 <br />O^ <br />N <br />> L ! <br />O <br />Gl <br />C9 <br />L <br />>` <br />> <br />U <br />0') <br />Q <br />■� <br />(D <br />> <br />O <br />T <br />O <br />a <br />C m <br />C <br />F- <br />0 <br />r <br />'a <br />t0 <br />Q) <br />T <br />r <br />= N <br />r <br />•� <br />■'� <br />O <br />72 <br />� <br />M <br />o <br />z <br />E 0 <br />d <br />19 <br />C <br />a <br />E <br />U <br />v °i <br />Q p <br />c <br />JOB <br />NO: <br />21-1069 <br />SCALE : <br />AS NOTED <br />SHEET NO. <br />5 <br />I <br />