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im "I <br />ATTIC VENTILATION CALCULATIONS - 131 <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 <br />0.000000 <br />0.000000 <br />Floor <br />35 <br />34 <br />5 <br />17 <br />1 <br />8 <br />0.0 <br />0.0 <br />0.0 <br />(Zone 1) <br />Upper <br />9 <br />2.000000 <br />Floor <br />1533 <br />1472 <br />210 <br />736 <br />53 <br />368 <br />411.0 <br />135.0 <br />276.0 <br />(Zone 2) <br />`*NOTE* <br />GENERAL CONTRACTOR MUST ENSURE THAT PROPER VENTILATION IS PROVIDED AT EAVES/SOFFITS AS <br />REQUIRED BY FBC 6th ED. RESIDENTIAL. <br />'-ONE-1 <br />ATTIC SPACE <br />'15 SQ. FT. <br />ROOF PLAN <br />SCALE: %4"=V-0" <br />Attic Ventilation <br />Attic Ventilation to be in compliance with the Florida Building Code 6th Edition <br />(2017) 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) glow 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 />• RIDGE VENTS 15 SQ. IN. OF NET FREE AREA I LINEAR FT. <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 />Al.' •w: <br />f, <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 2017 Florida Building Code - <br />Residential 6th Edition. Engineers signature and seal is only for <br />the structural engineering portions <br />of the drawing pages bearing <br />Engineer's signature and seal. <br />_ V N cp p�ppp <br />O n C.4 C in N J <br />NLL LL a. <br />to <br />Q <br />Z-0W <br />N CM I W (n <br />W <br />> �LL d d � <br />o <br />0Q <br />CM a) o _ = m O <br />m <br />W <br />mom m <br />g E m rn J Q a <br />Z <br />O@ N O W 0 Lg <br />NQ c+�ZQ U <br />Z'o <br />U ❑❑❑ <br />N <br />z o <br />W NNQ <br />� Q <br />z <br />Q� <br />d IY <br />N <br />ch <br />c0 <br />z <br />c V <br />•O <br />00 <br />0 Q <br />^ <br />tJ I <br />[u <br />f— O <br />y <br />�J <br />c) m <br />LLI O <br />F-- T E <br />0 8 <br />= <br />o <br />• <br />® Q <br />U <br />c `n d <br />Q <br />s �o <br />o <br />JZ <br />w <br />Mz <br />o <br />L- <br />Q E <br />E <br />zo <br />w O <br />>N <br />Z N <br />0 <br />ouo <br />t M <br />N¢ <br />k O <br />K ¢ <br />" <br />o <br />O <br />w <br />It <br />o <br />as <br />w <br />(d <br />U <br />m2 <br />o <br />Z <br />N Qi <br />--� <br />hm <br />a ° <br />Qz <br />z <br />2s <br />o� <br />z <br />e <br />son <br />3 <br />U <br />log <br />mall p <br />ng <br />oW <br />=3 <br />o <br />< <br />Iz <br />�o <br />a <br />oo <br />A <br />3 <br />0 CN <br />= <br />> L6 <br />L <br />T <br />ca <br />M <br />.N�! <br />T_ <br />LL <br />� <br />T <br />Q <br />c <br />O <br />/1 <br />o <br />o <br />2 M <br />OLO <br />o <br />N <br />rn ^ <br />,— <br />E <br />T <br />N T <br />o <br />Z <br />Z <br />� <br />c) <br />N <br />d <br />a <br />E <br />U J <br />Q 0 <br />c <br />J <br />JOB <br />NO: <br />20-3567 <br />SCALE : <br />AS NOTED <br />SHEET NO. <br />5.0 <br />