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O <br />UJ <br />ATTIC VENTILATION CALCULATIONS - Al <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 />ventilation <br />of vented <br />IN. of <br />of <br />vented <br />ventilation to <br />be provided <br />SQ. IN. of <br />SQ. IN. of <br />Ventilators <br />(See Elev ) <br />required <br />soffit <br />ventilation <br />soffit <br />by upper <br />Ventilation <br />Ventilation <br />needed <br />required <br />needed <br />ventilators <br />Main <br />0.0 <br />0.0 <br />Floor <br />16 <br />15 <br />2 <br />8 <br />1 <br />4 <br />0.0 <br />0.0 <br />0.0 <br />(Zone 1) <br />Main <br />4.0 <br />2.0 <br />Floor <br />1080 <br />1037 <br />148 <br />518 <br />37 <br />259 <br />336.0 <br />60.0 <br />276.0 <br />(Zone 2) <br />Upper <br />20.0 <br />0.0 <br />Floor <br />1166 <br />1119 <br />160 <br />560 <br />40 <br />280 <br />300.0 <br />(Zone 3) <br />300.0 <br />0.0 <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 />ZONE-1 <br />ATTIC SPACE <br />16 SQ. FT. <br />ROOF PLAN - ELEV-Al <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 I 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 SO. 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 />e� <br />a+� <br />m <br />� x <br />ri <br />3 �- <br />a> <br />c � <br />ro c, <br />0 Kf?V � <br />d <br />osr <br />t vC.. 4 <br />i <br />" <br />r t .•'� <br />To the bast of the Engineer's knowledge, information and belief, <br />the structural plans and specifications contained within these <br />drawings comply with the 2020 <br />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 />Q <br />A <br />G <br />u' <br />c0 r. <br />a ) N eo <br />u <br />Q <br />ajMV <br />C _j LL. W <br />i <br />0yp/ <br />iu L O7 <br />9 4' <br />IlL <br />'n' ,r"'7�. <br />:0, r r ((}} <br />LL <br />e <br />i <br />LLW <br />00 W <br />coU N Z <br />Z <br />N OU <br />W <br />❑ ❑ <br />ch uS <br /><C <br />J <br />U)ul <br />J_ <br />2_"� <br />W <br />(D <br />CD <br />c;; u, <br />�S <br />0Ln <br />$ <br />Ln <br />(� <br />r— u1 <br />Ii� J <br />��• <br />000 <br />z <br />E <br />W <br />WhE <br />I-- N <br />CL <br />� � <br />q ¢ <br />Y <br />00 <br />tY <br />q <br />) <br />q' <br />c3� <br />oo <br />a� <br />QY <br />�� <br />C <br />> L / <br />' n <br />L / <br />�1 <br />��.LOro <br />C7 <br />CN <br />CD <br />IM <br />T3=1 <br />°°' <br />Ln <br />i4 <br />CD <br />Ci71 <br />co <br />1J_ <br />W J <br />NM <br />,rh'' <br />E <br />c9 <br />e <br />`` <br />Z <br />Z <br />E N <br />E4.4 <br />' <br />`m <br />c <br />U J <br />d C] <br />r <br />.SOB <br />NO: <br />23-00520 <br />SCALE : <br />AS NOTED <br />SHEET NO. <br />5 <br />11 - <br />I I ,�� IIi�� i I _- - __. -- - - - -- -- -.- -- - — - -- i Ili- l -I P �,� I , Ii.il <br />--- - r;;—rl-. ' I.__1- I - 1----II- I I i III 1 11 1r- 1 1 1 1 _-I I 'I 1- --- _. 1_-1 <br />