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ATTIC VENTILATION CALCULATIONS - Al <br />Attic Ventilation <br />ATTIC VENTILATION REQUIRED UPPER VENTILATION PROVIDED <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 />1/150 Rule 1/300 Rule Off -Ridge Ridge <br />space. The ventilating area may be reduced to 1/300 provided that at least 40% <br />(No Upper Ventilators Vent AmAmt. t <br />(Must Provide Upper Ventilators) <br />but no more than 50% of the required ventilation Is provided In the upper portion of <br />Req.) (Ft.) <br />the space to be ventilated. Upper ventilators shall be located no more than 3 feet <br />-- — -- Total <br />(measured vertically) below the ridge or highest point of the space, with the <br />Ventilation <br />balance of the required ventilation provided by eave or cornice vents. <br />ATTIC Provided <br />SPACE SO. FT. SQ. IN. of by Upper <br />CALCULATIONS BASED ON THE FOLLOWING VALUES, SEE ROOF PLAN" <br />SQ. IN. of SQ. FT. Total SQ. <br />of ventilation to SQ. Ventilators <br />IN of vented IN. of of SQ. IN. of <br />(Values to be verified with Manufacturer Specifications) <br />e OFF -RIDGE VENTS 138 SQ. IN. OF NET FREE AREA / UNIT <br />. <br />ventilation vented be provided (See Elev) <br />soffit ventilation Ventilation Ventilation <br />• SOFFIT VENTS 7 SQ. IN. OF NET FREE AREA / SQ. FT. <br />required soffit by upper <br />needed required <br />e STUCCO SOFFIT VENTS 126 SO. IN. OF NET FREE AREA / SQ. FT. <br />needed ventilators <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 />-..._ _. ___� -- ----- <br />"Formula: (Sq. Ft. Soffit Needed) x 7 = (Sq. In. Needed) ! 9 • Linear Ft. of Deck -Air Needed) <br />Main <br />28 1 <br />Floor <br />2373 2278 325 1139 81 570 _._ - ___...__ 558.0 <br />(Zone 1) <br />420.0 138.0 <br />"NOTE" <br />GENERAL <br />CONTRACTOR MUST ENSURE THAT PROPER VENTILATION IS PROVIDED AT EAVES/SOFFITS AS <br />REQUIRED BY FLORIDA BUILDING CODE 7TH EDITION (2020) RESIDENTIAL. <br />1'-0" <br />s <br />Q <br />w w w w w w w �� w w w w ea• w r� w w w <br />I <br />w w w w w w w e>_ - w w es <br />es w w w w-- w e>_ - ea - <br />-www -- w w <br />w <br />I <br />I <br />ZONE-1 <br />I <br />I <br />I <br />I <br />ATTIC SPACE <br />I <br />I <br />I <br />I <br />2373 SQ. FT. <br />I <br />I <br />I <br />I <br />�,Q <br />I <br />I <br />I <br />a <br />I <br />tiGo <br />� <br />_O <br />04 <br />rn <br />I <br />I <br />I <br />5:12 SLOPE <br />I <br />I <br />I <br />I <br />I <br />IW <br />> <br />ILL <br />RIDGE <br />:12� SLOPE <br />14'-O' RIDGE VENT <br />o <br />� <br />a <br />P <br />rn <br />6 <br />�_4- <br />11'-O' RIDGE VENT <br />RIDGE <br />I <br />W <br />C <br />I I <br />O <br />U) <br />CL <br />o <br />3'-0' L <br />C4 <br />I U) <br />04 <br />I I <br />I <br />4'-0' RIDGE VENT <br />4 I <br />RIDGE <br />co I <br />LU <br />a I <br />U) <br />I <br />N <br />r <br />G <br />O I <br />I <br />ROOF PLAN - ELEV-Al <br />SCALE: Y4"=1'-0" <br />e^" <br />�p� <br />c <br />d �o <br />W <br />C- <br />c i,' G <br />y�mrNc <br />N C* o <br />N N <br />Q o m <br />d � <br />d <br />•� <br />o�Q <br />dd n <br />y G <br />fl. <br />c � <br />� o <br />0 <br />.•,tt,�,ttt� t c t Effrpro� <br />To the best 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 <br />7th Edition. Engineer's signature and seal is only for <br />the structural engineering portions of the drawing pages bearing <br />Engineers <br />signature and seal. <br />a <br />W <br />Q <br />Q N <br />d <br />05 %► <br />C i <br />-lam <br />W <br />LL LLLLIf Z <br />Z <br />a <br />W`�' <br />0 <br />°' m <br />Z <br />ci <br />" Z d K <br />3 <br />N <br />OU y <br />Z <br />W <br />00 <br />0 <br />z 0 M <br />zQ <br />J <br />dJ <br />z <br />X� <br />LL <br />•` <br />o, <br />j <br />OLLA <br />�N <br />L=u <br />o <br />C13 <br />LJ <br />L <br />Eo <br />0j <br />.0 <br />> <br />aR <br />30 <br />O <br />cc <br />cc <br />—E <br />w <br />A <br />�U <br />U <br />Z <br />4 <br />C <br />Z <br />w51 <br />�J <br />51 <br />LL <br />01 <br />(o <br />LO <br />co <br />Q <br />CU <br />O <br />�— <br />U) <br />N <br />im <br />4,,, <br />Ln <br />T <br />¢� <br />*,d <br />o <br />O <br />0) <br />LO <br />T <br />Q <br />M <br />M <br />r <br />z° <br />Z <br />c <br />a <br />E <br />>u <br />< <br />c <br />c <br />0 —1 <br />pre <br />� <br />JOB <br />NO: <br />22-06464 <br />SCALE : <br />AS NOTED <br />SHEET NO. <br />5 <br />