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ATTIC VENTILATION CALCULATIONS - Al (TRA <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 />23.00000 <br />1.000000 <br />Floor <br />2008 <br />1928 <br />275 <br />964 <br />69 <br />482 <br />0 <br />483.0 <br />345.0 <br />138.0 <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-Al <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 11150 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 SO. IN. OF NET FREE AREA / SQ. FT. <br />4 <br />�0���0�,`�9'tQ91lisl�ld6����_tr <br />ti� d <br />'S� .. '.. <br />rifttitel <br />To the best of the Engineer's knowledge, information and bellef, <br />the structural plans and specifications contained within these <br />drawings comply with the 2017 Florida Building Code - <br />Residential 6th 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 />9 <br />Q _ 8 N_ cp o�D <br />O O m (G N <br />v OM M y 0 LL <br />�LL N� LLLL LL d <br />� rn <br />Q �rLL aa. <br />> C <br />0z a�� 0 <br />@a)o Wmo <br />W �EcP <br />nz Boa <br />z <br />N Q M Z U0 J <br />LL <br />0 . . < <br />W <br />M <br />z N o <br />_ <br />z <br />z <br />� M <br />^ l0 <br />�-J V <br />V LU <br />�- <br />� n <br />WD <br />U Q <br />W <br />0 W F <br />N c o <br />o <br />�N N <br />f- <br />U m <br />W <br />12 E <br />o g <br />mi <br />l <br />= <br />U u <br />• <br />Q 0 Y <br />O <br />CID <br />W <br />M <br />z2 <br />o f <br />Z <br />zd <br />J <br />W <br />w� <br />oO <br />Z <br /><Co <br />V <br />Z® <br />W <br />F— <br />XO <br />U¢ <br />�UU <br />�a <br />Z <br />N @ <br />°do <br />Qp <br />wz <br />-n <br />L <br />. � <br />0 <br />O <br />mi <br />p <br />O, <br />> <br />z <br />J <br />�' <br />g <br />y¢wo <br />O � <br />U <br />W <br />c.> <br />Wo <br />a <br />F� <br />o <br />J W <br />¢ F <br />rE0 <br />�'o <br />CC)a <br />oir <br />x <br />o� <br />J <br />a)M <br />>M <br />L <br />O <br />> <br />CL <br />L <br />O <br />O <br />m <br />N <br />r <br />O <br />LO <br />T J od <br />LO <br />r <br />i r c,4 <br />N <br />r <br />M r— <br />o <br />Z <br />ns <br />Z <br />E O in <br />� <br />r`p <br />c <br />d <br />U _j Q p <br />JOB <br />NO: 20-2750 <br />SCALE : AS NOTED <br />SHEET No. <br />5 <br />