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w <br />ATTIC VENTILATION CALCULATIONS <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 />SQINof <br />Ventilators <br />ventilation <br />soffit <br />ventilation <br />vented <br />be provided <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 <br />19 <br />2 <br />Floor <br />2276 <br />2185 <br />312 <br />1092 <br />78 <br />546 <br />561.0 <br />285.0 <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 FLORIDA BUILDING CODE 7TH EDITION (2020) RESIDENTIAL. <br />ROOF PLAN - ELEV-Al <br />SCALE: %4"=V-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 SQ. 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 />•>,�luiiiil;iP /� <br />4 <br />U <br />a Q <br />$StoNr <br />\\ <br />11mitl"1\������ <br />To the best of the Engineers knowledge, information and belief, <br />the structural plans and specifications contained <br />within these <br />drawings comply with the 2020 Florida Building Code - <br />Residential 7th Edition. Engineers <br />signature and seal is only for <br />the structural engineering portions <br />of the drawing pages bearing <br />Engineer's signature and seal. <br />H <br />� <br />W <br />a <br />v E <br />o o <br />m OD <br />(CO4 <br />N <br />N N <br />0 J <br />V <br />0 <br />Y O C <br />00 <br />N cn <br />J <br />iL u W <br />H <br />co r` r-� <br />V <br />- w a- <br />LL O <br />QC' <br />LLLL <br />Y <br />a. LU <br />Z <br />J <br />x O <br />00'e <br />rye _ <br />o <br />Nco <br />O w <br />L O J <br />W <br />O rn <br />Q Q Q <br />Z <br />N M Z <br />aK <br />K N O <br />O U <br />v w <br />Z <br />W <br />❑ ❑ ❑ <br />U <br />N M <br />O p <br />z QQN <br />Z O Q <br />J <br />d N <br />QE3� <br />M <br />Z a <br />U `o <br />LL <br />LLJ <br />O <br />�N <br />L o <br />l) <br />U <br />mksW <br />J <br />P— — £ <br />L p <br />I <br />zl� <br />y N <br />J <br />U o N <br />L_ U) <br />0 <br />m <br />�® <br />N <br />f• <br />O <br />QO <br />� <br />w <br />Ch <br />CO <br />J <br />w <br />o Sz <br />Z <br />a <br />L.L_ <br />E <br />w <br />z o <br />oo <br />> N <br />¢N <br />Q <br />E OU <br />¢z <br />?O <br />0L <br />N <br />I— C <br />�o <br />X U <br />O h <br />Up <br />U <br />U <br />o E <br />O � <br />z <br />wo <br />¢o <br />az <br />ire <br />L <br />fB <br />W C <br />y <br />U <br />O <br />m0 <br />O LL <br />z <br />J <br />v=i <br />4 W <br />�o <br />�n <br />N <br />< <br />F <br />oop <br />z z <br />g0 <br />Q <br />a 3 <br />U <br />ao <br />az <br />�� <br />xF <br />�O <br />� 0 <br />Mj <br />w< <br />oz¢ <br />d F <br />00 <br />O <br />C O <br />> Ln <br />O�1 <br />co <br />(0 <br />U <br />L <br />Q <br />O <br />CL <br />U <br />O <br />m <br />w <br />O <br />O r <br />No <br />It <br />I� <br />r <br />r <br />= <br />o <br />o <br />T"_ <br />T N <br />o <br />E <br />C O <br />z <br />z <br />E O <br />�; <br />CU <br />d <br />E a <br />U J <br />Q 0 <br />J <br />JOB <br />NO: <br />19-0251 <br />SCALE : <br />AS NOTED <br />SHEET NO. <br />5 <br />r <br />A <br />w <br />