Laserfiche WebLink
ATTIC VENTILATION CALCULATIONS - 131 JRB) <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 providedt <br />Ventilation <br />Ventilation <br />(See Elev ) <br />required <br />needed <br />r <br />required <br />soffit ffi <br />by upper <br />needed <br />ventilators <br />Main <br />22.00000 <br />2.000000 <br />Floor <br />2000 <br />1920 <br />274 <br />960 <br />69 <br />480 <br />0 <br />606.0 <br />330.0 <br />276.0 <br />(Zone 1) <br />-NOTE" <br />GENERAL CONTRACTOR MUST ENSURE THAT PROPER VENTILATION IS PROVIDED AT EAVES/SOFFITS AS <br />REQUIRED BY FBC 6th ED. RESIDENTIAL. <br />ROOF PLAN - ELEV-Bl. <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) 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 />Coastal Flashings <br />All flashing material for coastal locations (ex: within 3,000 feet of the <br />ocean) shall be corrosion resistant material (ex: zinc and/or stainless <br />steel) and shall be selected for compatibility with adjacent wood <br />preservatives per the manufacturer's recommendations. <br />I <br />� <br />3 <br />r � <br />JAty <br />- J <br />4�:] <br />p!6 <br />r/py <br />�.2it a44�� <br />To the best of the Engineers 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 Edition. Engineer's signature and seal is only for <br />the structural engineering portions <br />of the drawing pages bearing <br />Engineer's signature and seal. <br />� E� m <br />W O N <br />O v- V N <br />000 0)to <br />m N r aL000 LL LL <br />W <br />LL L a s <br />tN <br />Q <br />"1 w vi <br />m La aa.. X 0 <br />130 <br />Cx <br />< "a <br />0Woo <br />Z <br />-0(n°' <br />a)o mmo <br />in <br />�E�� <br />IIIW <br />LLZ <br />_joan <br />V.@N d Q O U <br />cvQc�Z U t— <br />� <br />Z <br />U ❑❑❑❑ <br />W <br />Z N O <br />� NQO <br />O <br />Z � Q <br />W <br />O <br />d N <br />rl <br />tJ1 <br />(6 <br />z <br />o <br />W <br />VJ <br />(D <br />_ "- <br />f V <br />rl <br />111 o <br />n <br />1 <br />0 Q <br />O <br />V) <br />w t <br />C O <br />� y <br />ws <br />� o <br />U a) <br />w <br />E2 E <br />— O 4 <br />zrs <br />U o m <br />C <br />®� <br />sm <br />r_ <br />o <br />CID <br />w <br />M <br />M <br />a <br />o <br />Z <br />a <br />g <br />LL <br />E <br />f o <br />� <br />14 <br />Q ouj <br />�oLL <br />z <br />Z0 <br />oa <br />co <br />_ <br />k O <br />u UO <br />❑ <br />Z <br />U E <br />0 N t <br />ao <br />¢o <br />¢Z <br />a <br />�� <br />L <br />3 <br />¢ Z <br />Y <br />U <br />ym <br />m o <br />Z <br />QW <br />Z <br />r <br />CL <br />o <br />z <br />o a <br />�w <br />U <br />o <br />oz <br />�k <br />=3 <br />� <br />O <br />CD <br />�t <br />w, <br />za <br />a <br />O� <br />�M <br />0 <br />= <br />M <br />J <br />m <br />t0 <br />L <br />@ <br />c� <br />•i <br />d. <br />�\ <br />Q <br />O <br />c a <br />F— <br />a) Co <br />T <br />O ON <br />L0 <br />r <br />I 0) <br />N -ON-,) <br />r <br />E <br />2: <br />T T <br />CY) <br />O <br />ccr <br />Z <br />E Q <br />Z <br />cc <br />m <br />a <br />U 0 <br />Q p <br />C <br />0 <br />JOB <br />NO: <br />20-0554 <br />SCALE : <br />AS NOTED <br />SHEET NO. <br />5 <br />