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I ll <br />J <br />ATTIC VENTILATION CALCULATIONS - 131 TRB) <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. ofSQ <br />of <br />o <br />ventilationt <br />. <br />INof <br />SQ. IN. of <br />Ventilators <br />ventilation soffit <br />ventilation <br />vented <br />be provided <br />. <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 />22.00000 <br />2.000000 <br />Floor <br />2000 <br />1920 <br />274 <br />960 <br />69 <br />480 <br />0 <br />606.0 <br />330.0 <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 FBC 6th ED. RESIDENTIAL. <br />ROOF PLAN - ELEV-Bl <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 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 />• RIDGE VENTS 15 SQ. IN. OF NET FREE AREA / LINEAR FT. <br />• OFF -RIDGE VENTS 138 SO. IN. OF NET FREE AREA / UNIT <br />• SOFFIT VENTS 7 SO. IN. OF NET FREE AREA / SQ. FT. <br />Coastal Flashings <br />All flashing material for coastal locations (ex: within 3,000 feet of the <br />ocean) shall be corrosion resistant material (ex: zinc and/or stainless <br />steel) and shall be selected for compatibility with adjacent wood <br />preservatives per the manufacturer's recommendations. <br />G <br />LL� L <br />i <br />tea✓ � <br />_ cy' �J rI • <br />LU <br />;i. <br />To the best of the Engineers knowledge, information and belief, <br />the structural plans and specifications contained within these <br />drawings comply with the 2017 <br />Florida Building Code - <br />Residential 6th Edition. Engineers signature and seal is only for <br />the structural engineering portions of the drawing pages bearing <br />Engineers signature and seal. <br />W <br />EE <br />op <br />8 N # <br />O O 0)J J <br />M r- N c i0 co LL U. <br />Cl) <br />I» <br />LL <br />N M W N <br />Z <br />CN°' 0 03 <br />x <br />W'morN-�O <br />@ G)o m O D <br />m� �0 <br />W <br />�E°'O' �Oai <br />NQILc)Z U <br />Z <br />H J <br />° 0 ❑�00 <br />W <br />M <br />Qp� <br />Z N (ryryD <br />Z <br />Z <br />� co <br />O <br />d <br />M <br />^N <br />Z U <br />CD O <br />W <br />_ <br />U <br />� Y <br />LJ O <br />� Q <br />O <br />N <br />^ <br />t/ <br />N <br />W F <br />J <br />N <br />� O <br />~ m 8 <br />0 8 <br />= <br />3 <br />Q <br />Q <br />o <br />M <br />9 <br />w <br />M <br />z <br />y <br />Z <br />2 <br />2 <br />E <br />of <br />o <br />?® <br />E °u <br />wo <br />Q= <br />x� <br />U❑ <br />�� <br />0° <br />Z <br />0 <br />N <br />2 <br />Q Z <br />o <br />O <br />w z <br />L <br />� <br />❑ <br />.2 <br />U <br />m E <br />❑a' <br />2 <br />Z <br />N O <br />b <br />Q W <br />Z <br />Z <br />22 <br />N 3 <br />°. <br />o� <br />2 <br />Jo <br />a <br />W <br />� <br /><o <br />oz <br />Fti <br />J <br />fir <br />= <br />O� <br />¢ <br />zia <br />53 <br />0 <br />.0 M <br />;n <br />> M <br />r <br />m(co <br />I— <br />2 <br />C <br />O <br />■T� <br />J TO <br />l� <br />LO <br />�O <br />T <br />r <br />i <br />T 0 <br />E <br />E T <br />M 04 <br />o <br />Z <br />Z <br />v <br />E O <br />iri T <br />ti <br />FL <br />c0 ° <br />Q o <br />� <br />JOB <br />NO: <br />19-8530 <br />SCALE : <br />AS NOTED <br />SHEET NO. <br />5 <br />