Laserfiche WebLink
ATTIC VENTILATION CALCULATIONS - Al (TRA) <br />ATTIC VENTILATION REQUIRED UPPER VENTILATION PROVIDED <br />11150 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 />SQINof <br />SQIN. of <br />Ventilators <br />ventilation <br />soffit <br />ventilation <br />vented <br />be provided <br />. . <br />Ventilation <br />. <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 SQ. IN. OF NET FREE AREA / UNIT <br />• SOFFIT VENTS 7 SQ. IN. OF NET FREE AREA / SQ. FT. <br />• STUCCO SOFFIT VENTS - 126 SO. 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 />CV <br />O <br />CV <br />CO <br />CV <br />O <br />:•' <br />N ' Ste' <br />50 • <br />� s• P�-, <br />t70 <br />•, k <br />r <br />` <br />8c: <br />:CC= <br />W <br />: LU <br />OF ' <br />: .: <br />13 O <br />"4 kv <br />t� <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 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 />N <br />W <br />Q <br />CD <br />h <br />v E 11 00 <br />0MQ' N <br />N N 07 J <br />r; u- <br />C J <br />Q <br />_ <br />0- <br />M <br />U)r�a W <br />J LL u- 'L w <br />Z <br />0 <br />L N C) <br />0 <br />@ co d' O , <br />W <br />0 <br />Z <br />IL <br />us <br />OD 6 <br />N M Z W to O <br />3 <br />O U U 5 N <br />z <br />W <br />❑ ❑ ❑ <br />P <br />C" <br />z N O <br />o <br />z m <br />IR <br />V) <br />N <br />O <br />V/z/n� <br />LL <br />[n <br />W <br />O <br />W s <br />w <br />U <br />W <br />_ E <br />8 <br />°N <br />zip,. <br />�Q <br />U o <br />C <br />¢ N m <br />O <br />CO <br />W <br />M <br />M <br />o <br />Z <br />a <br />wo <br />QO <br />g <br />ZZs <br /><N <br />E 0 <br />F j04 <br />Z® <br />o a <br />Fes- <br />Rzo <br />U <br />00 <br />p <br />z <br />O <br />O <br />t <br />a'' <br />Qz <br /><g <br />� <br />Ww <br />tx � <br />(� C <br />_ C <br />Zz <br />OY <br />N <br />mo <br />Z� <br />Oz <br />z <br />Q% <br />J <br />ae0 <br />6 W <br />�z <br />u� <br />ami <br />2< <br />go <br />Q <br />a <br />mw <br />W <br />U <br />O <br />oLL <br />=3 <br />O <br />u "NJ <br />zl¢ <br />¢} F <br />(U 3 <br />= <br />NO <br />�L <br />J <br />Om <br />C� <br />0 <br />L <br />� <br />o <br />O <br />T <br />\ <br />• / <br />r� <br />> <br />O <br />o <br />0 <br />m <br />0O <br />CU <br />_ N <br />•�- <br />T <br />O <br />r <br />r <br />00 M <br />M 04 <br />o <br />N <br />v; <br />z <br />Z <br />E p <br />aco <br />U 0 <br />Q p <br />JOB <br />NO: <br />21-2024 <br />SCALE : <br />AS NOTED <br />SHEET NO. <br />5 <br />