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ATTIC VENTILATION CALCULATIONS - Al (TRA) <br />ATTIC VENTILATION REQUIRED UPPER VENTILATION PROVIDED <br />11150 Rule Ridge <br />1/300 Rule Off -Ridge <br />(No Upper Ventilators (Must Provide Upper Ventilators) Vent Amt Amt. <br />Req.) (Ft.) <br />ATTIC <br />SPACE <br />SQ. FT. <br />Total SQ. <br />SO.T <br />SQ. IN. of <br />of vented <br />IN. of <br />ventilation <br />soffit <br />ventilation <br />vented <br />required <br />needed <br />required <br />soffit <br />needed <br />Total <br />Ventilation <br />Provided <br />SQ. IN, of <br />by Upper <br />ventilation to <br />SQ. IN. of <br />SQ. IN. of <br />Ventilators <br />be provided <br />Ventilation <br />Ventilation <br />(See Elev) <br />by upper <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"=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 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 / 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 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 />17, <br />N <br />O <br />N <br />O <br />cli <br />ova <br />• <br />c�; No PE 8T50 r <br />•• <br />•* r <br />�• ST <br />s <br />OF ••Ll„ <br />"'0 <br />�•t�Jf:J: <br />SUtiyt� <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 structural engineering portions of the drawing pages bearing <br />Engineer's signature and seal. <br />W <br />a <br />n <br />E <br />o S co n xt <br />8 N # <br />v <br />Lo 0 <br />m L0 J <br />�tn� N # V, W <br />0 <br />0 <br />0 <br />0 L a <br />6mv �°'�c <br />Jty W a L <br />z <br />�Yo 0 o <br />O: <br />-�5-mNtY O <br />Z <br />IL IL <br />N Cl)Z Ix00 <br />3 <br />O -) 0(0z <br />M 7 F1 <br />U M <br />z N M <br />O O <br />z � <br />Q V <br />J <br />D_ N <br />- N <br />c7 <br />O <br />V <br />rl <br />Cl) <br />W � <br />Vm <br />� <br />O <br />U, g <br />N <br />U <br />s <br />®ll <br />w J <br />r— E <br />8 <br />u 0 5 <br />Q 0 <br />N <br />O <br />CO <br />W <br />M <br />p <br />z <br />2 <br />< <br />lJL <br />E <br />QO <br />ZQ o <br />Q O <br />w <br />Z® <br />0 0: <br />F--- ni <br />x U <br />o OU <br />p <br />O� <br />z <br />O <br />04 <br />a� <br />¢ Z <br />0 <br />¢n <br />W z <br />r w <br />_0 L <br />r� <br />Y <br />U <br />m0 <br />m0 <br />O <br />oz <br />F' <br />)z <br />z <br />J <br />�� <br />z z <br />Fw <br />z <br />ao <br />vow <br />o <br />Wa <br />0 <br />-'o <br />O <br />VGO <br />zR <br />aF <br />° 3 <br />O <br />C O <br />2 <br />i <br />> , �.^ <br />1 ! <br />rr <br />L-1� <br />N <br />N <br />r'n <br />W <br />Ca <br />0 <br />L <br />� <br />0 <br />M <br />U <br />O <br />> <br />N <br />Q <br />Y <br />O <br />O/� <br />O <br />V./ <br />1..� <br />� <br />C/�� m <br />O <br />\./ <br />V / <br />C <br />r <br />co O <br />2 N <br />r <br />• <br />cF d� <br />Ln <br />r <br />= co <br />rn N <br />r <br />Z 0 <br />� N <br />C'M <br />o <br />Z <br />W <br />Z <br />E <br />N <br />0 <br />e <br />f° <br />a <br />0 o <br />U <br />-0 m <br />Q p <br />aa)) <br />JOB <br />NO: <br />21-2026 <br />SCALE : <br />AS NOTED <br />SHEET NO. <br />5 <br />