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ZV <br />O <br />cV <br />N <br />N <br />0 <br />0 <br />0 <br />CIO <br />ATTIC VENTILATION CALCULATIONS <br />ATTIC VENTILATION REQUIRED <br />UPPER VENTILATION PROVIDED <br />1/160 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 />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-B1 <br />SCALE: %4"=1'-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 SO. 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 />Py�`a/rf <br />�l q <br />0j iv <br />IS <br />e e g > <br />tsa <br />\0 <br />CO <br />r' •`• <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. 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 />N <br />W E <br />Q o �� <br />Co <br />Nnvc <br />CN <br />a)LL <br />a) 00 <br />C - u1 oD N <br />±# u w <br />N a�r--r-� o <br />M cam+» <br />w a <br />LL a Y <br />4 jLL� <br />a W co <br />Z_ o <br />13 <br />0 <br />OS P <br />cu <br />r�o <br />N <br />O�— w <br />O <br />W rn <br />Q Q Q <br />Z N M z <br />IL <br />N Ll <br />0.' cn 0 <br />aO V <br />: <br />U fn <br />Z <br />Ilt <br />17101 <br />M � <br />z N (7 <br />O O <br />z f� <br />Q � <br />J <br />Q N <br />— N <br />M <br />�}�( CI') <br />t�/ W m <br />� a <br />U <br />0 w s <br />Ln C <br />�N in <br />U <br />W J <br />® <br />wigY- — E <br />V <br />I <br />L <br />L � <br />U o N <br />c m 0 <br />N 0 <br />• <br />r. Q <br />sm <br />o <br />W <br />co <br />zo <br />z <br />rJL <br />zO <br />> N <br />Z¢e <br />Q O <br />E: V <br />O� <br />G� <br />Z® <br />❑W� <br />K O <br />6F <br />❑ O <br />Oz <br />O C <br />N t <br />z <br />ao <br />¢o <br />a z <br />aw <br />d L <br />f6 <br />U) <br />U <br />mM <br />F O <br />- N <br />m <br />aw <br />Nz <br />N <br />o <br />z <br />5z <br />Q <br />a <br /><o <br />r� <br />�3 <br />O <br />o� <br />w <br />� O <br />O <br />co <br />o< <br />za <br />a <br />o— <br />o3 <br />O <br />2 O <br />= <br />` <br />> Lln <br />J <br />Om <br />0 <br />L <br />0') <br />� J <br />CIO <br />CN <br />OU <br />C <br />T O <br />N <br />r' <br />I c)) N <br />T <br />M � N <br />c <br />o <br />z <br />E CV 4i <br />E O <br />r <br />Z <br />a <br />E <br />U Q p <br />JOB <br />NO: 21-1073 <br />SCALE : AS NOTED <br />SHEET NO. <br />5 <br />