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ATTIC <br />VENTILATION <br />CALCULATIONS <br />- B1 (TRB) <br />Attic Ventilation <br />ATTIC VENTILATION <br />REQUIRED <br />UPPER VENTILATION <br />PROVIDED <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 11150 of the area of the vented <br />1 /er Rule <br />1/300 Rule <br />Ridge <br />Off -Ridge <br />space. The ventilating area may be reduced to 1/300 provided that at least 40% <br />(No Upper Ventilators <br />(Must Provide Upper Ventilators) <br />Vent Amt <br />Amt. <br />o <br />but no more than 50 /o of the required ventilation is provided in the upper portion o <br />Req.) <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 />ATTIC <br />SQ. FT. <br />SQ. IN. of <br />Provided <br />"CALCULATIONS BASED ON THE FOLLOWING VALUES, SEE ROOF PLAN" <br />SPACE <br />SQ. IN. of SQ. FT. <br />Total SQ. <br />of <br />ventilation to <br />by Upper <br />Ventilators <br />Values to be verified with Manufacturer Specifications) <br />of vented <br />ventilation <br />IN. of <br />vented <br />be provided <br />SQ. IN. of <br />SQ. IN. of <br />(See Elev) <br />OFF -RIDGE VENTS 138 SQ. IN. OF NET FREE AREA / UNIT <br />required soffit <br />ventilation <br />soffit <br />by upper <br />Ventilation <br />Ventilation <br />. SOFFIT VENTS 7 SQ. IN, OF NET FREE AREA / SQ. FT. <br />needed <br />required <br />e STUCCO SOFFIT VENTS - 126 SO. IN. OF NET FREE AREA / SQ. FT. <br />needed <br />ventilators <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 />Main <br />21.00000 <br />0 <br />2.000000 <br />Floor <br />2377 <br />2282 <br />326 <br />1141 <br />81 <br />570 <br />591.0 <br />315.0 <br />276.0 <br />(Zone 1) <br />'*NOTE`* <br />GENERAL <br />CONTRACTOR <br />MUST ENSURE THAT <br />PROPER VENTILATION IS PROVIDED <br />AT EAVES/SOFFITS <br />AS <br />REQUIRED <br />BY FBC 6th <br />ED. RESIDENTIAL. <br />ROOF PLAN - ELEV-B1 <br />SCALE: %4"=1'-0" <br />f <br />L <br />_ c- <br />_ <br />Cli:.:�' <br />L <br />f <br />i <br />J <br />-:R�i yA. • c n • w <br />.- <br />f, <br />°•, <br />c <br />`a <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 />Flodda 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 />F� <br />o f <br />o RQ <br />n <br />Co <br />ro - - <br />0 <br />N N C17 <br />C <br />— lJL <br />2 J <br />"a <br />tl� <br />n00h <br />t- <br />M TV <br />- W <br />LL a <br />Qe <br />j <br />J LL. LL <br />W <br />d W 3: <br />Z <br />0 <br />CIL <br />L <br />O <br />3:O <br />W <br />(6 <br />t «. O <br />_•F N(O <br />O 0 W <br />LL m J <br />z <br />LL <br />U) Cj . <br />co <br />d a <br />a <br />Z <br />N M z <br />OU��vvi <br />E N O <br />W <br />❑ ❑ ❑ <br />Z No O <br />W NN <br />Z O Q <br />Q � <br />J <br />CL_ N <br />n <br />N <br />z <br />� m <br />U <br />— � <br />0 <br />w o <br />in <br />tlOi <br />(� <br />r•— <br />U <br />w J <br />U o <br />C U) d <br />o <br />r• <br />o <br />CID <br />w <br />z <br />09 <br />z <br />a <br />LL <br />E <br />Q <br />Z❑ <br />� <br />❑O � <br />>N <br />Q R <br />Z® <br />E O <br />Fcc rO <br />CL <br />CZ)E <br />¢ O <br />z 0 <br />a <br />z <br />W <br />0 ° <br />d <br />w Z <br />N <br />w o <br />QO <br />r� <br />L <br />rp <br />C <br />U <br />�O <br />mi <br />O <br />O, <br />Z <br />J <br />aw <br />6W <br />2z <br />cn <br />Q <br />o�d <br />� <br />z <br />go <br />d <br />+n w <br />3 <br /><1 <br />Sk <br />o <br />oLL <br />aQ <br />=3 <br />�o <br />O <br />oa w <br />a= <br />❑ <br />'Q <br />ZQTU� <br />2 O <br />i <br />E2 <br />ca <br />CD <br />n/ <br />`° <br />M <br />LL <br />J04 <br />0 <br />^^��� ° <br />m <br />U <br />(0 <br />�.. <br />W <br />r <br />co o <br />Cy) <br />.T� <br />= N <br />T� <br />Lrr-) <br />N <br />T <br />M <br />T <br />� <br />o <br />z <br />cc <br />z <br />M O <br />E <br />M <br />a <br />E <br />U _J <br />ai <br />Q p <br />C <br />JOB <br />NO: <br />20-8088 <br />SCALE : <br />AS NOTED <br />SHEET NO. <br />5 <br />