Laserfiche WebLink
ATTIC VENTILATION CALCULATIONS <br />- B1 <br />UPPER VENTILATION PROVIDED <br />Ridge <br />Off -Ridge <br />ATTIC VENTILATION <br />REQUIRED <br />1/300 Rule <br />1/150 Rule <br />(No Upper Ventilators <br />(Must Provide Upper Ventilators) <br />Vent Amt <br />Amt. <br />Req.) <br />(Ft) <br />- Total <br />- - <br />- — <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 SQ. IN. of Ventilators <br />ventilation <br />soffit <br />ventilation <br />vented <br />be provided <br />Ventilation Ventilation (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 35 34 5 17 1 <br />8 <br />0.0 <br />(Zone 1) <br />0.0 <br />0.0 <br />Upper <br />9 <br />2.000000 <br />Floor 1533 1472 210 736 53 <br />368 <br />- - 411.0 <br />(Zone 2) <br />135.0 <br />276.0 <br />*'NOTE'* <br />GENERAL CONTRACTOR MUST ENSURE THAT PROPER VENTILATION <br />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"=1'-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 11300 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 />• RIDGE VENTS 15 SQ. IN. OF NET FREE AREA / 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 />i <br />rL <br />r <br />i <br />4L <br />7. <br />/�//efltiiiS�sV\1 i'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 2017 <br />Florida Building Code - <br />Residential 6th Edltlon. 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 />m <br />0 <br />NJ <br />N <br />n a�qJ # m LL <br />11, to <br />J <br />r- P LL J d <br />LL <br />'' <br />aLu01 <br />M M W N <br />`3�LL U. d d W <br />zmOf <br />e <br />L (a <br />m <br />ro N <br />CY) CL <br />LL Z <br />z <br />N O< O <br />co M U <br />Z N <br />° <br />❑El❑ <br />CD <br />Z <br />z� <br />Z n <br />WN <br />' <br />^NCD <br />C <br />W <br />•U <br />Q <br />O <br />W 8 <br />�tJ1 <br />NI7•� <br />c � <br />3 <br />L <br />xkJ <br />w <br />U <br />t � <br />I <br />= <br />f <br />Q <br />O <br />Z <br />W <br />Z <br />E <br />O <br />a <br />� <br />Z <br />?® <br />a <br />CL <br />u <br />X U <br />oa <br />O <br />Z <br />_ <br />C <br />L <br />Kr <br />< <br />� z <br />Z <br />N t <br />d no <br />o <br />a �o <br />W <br />tty <br />Wmo$� <br />n7 <br />�� <br />C <br />�x <br />N <br />O <br />Z <br />to <br />m <br />Q <br />z <br />a <br />� <br />ila <br />� 3 <br />�N <br />= <br />LO <br />CC <br />L1 <br />�, <br />M <br />W <br />N <br />CN <br />Q <br />C o <br />2) <br />Q� m <br />U <br />Lp <br />�o <br />r <br />■� <br />1:N <br />r <br />N <br />= <br />CDN <br />r <br />N <br />ai <br />M <br />N <br />M N <br />CD <br />o <br />Z <br />z <br />E O <br />E <br />77 <br />M <br />C <br />JOB <br />NO: <br />20-8078 <br />SCALE : <br />AS NOTED <br />SHEET NO. <br />5.0 <br />