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L <br />it <br />a <br />n <br />n <br />x <br />c <br />W <br />_ <br />30 <br />J <br />'''4 <br />00 <br />00 <br />2 <br />E <br />O <br />M0 <br />2 <br />0 <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 />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 />0.000000 <br />0.000000 <br />Floor <br />0 <br />0 <br />0 <br />0 <br />0 <br />0 <br />0.0 <br />0.0 <br />0.0 <br />(Zone 1) <br />Upper <br />9 <br />2.000000 <br />Floor <br />1535 <br />1474 <br />211 <br />737 <br />53 <br />368 <br />411.0 <br />276.0 <br />(Zone 2) <br />135.0 <br />"NOTES* <br />GENERAL CONTRACTOR MUST ENSURE THAT PROPER VENTILATION IS PROVIDED AT EAVES/SOFFITS AS <br />REQUIRED BY FBC 6th ED. RESIDENTIAL. <br />ROOF PLAN <br />SCALE: %4"=1'-0" <br />General Notes <br />ROOF CRITERIA: <br />• 12" OVERHANG U.N.O. <br />• PLUMB CUT FASCIA ROOF <br />• PITCH PER ELEVATION <br />"G.C. VERIFY ROOF PITCH" <br />ROOF PITCH VARIES PER SUBDIVISIONS IT IS THE <br />CONTRACTORS RESPONSIBILITY TO VERIFY <br />ROOF SLOPE REQUIREMENTS WITH TRUSS <br />MANUFACTURER. <br />"ELECTRICAL SPECIFICATION NOTES" <br />ELECTRICAL CONTRACTOR MUST VERIFY WITH <br />THE SPECIFICATIONS FOR THE TYPE OF FIXTURE <br />TO BE USED. LIGHT FIXTURES SHOWN ARE FOR <br />LOCATION PURPOSES. <br />Exterior Covering <br />R703.7 Exterior plaster. <br />Installation of these materials shall be in compliance with ASTM C <br />926 and ASTM C 1063. <br />R703.7.1 Lath. <br />All Lath and lath attachments shall be of corrosion -resistant <br />materials. Attached per ASTM C 1063. <br />R703.7.2 Plaster. <br />Plastering w/ portland cement plaster shall be not less than three <br />coats when applied over metal lath or wire lath and shall be not <br />less than two coats when applied over masonry, concrete. <br />R703.7.3 Water-Resisitive Barriers. <br />Water-resisitive barriers shall be installed where cement plaster <br />(stucco) is to be applied over wood -based sheathing, shall include <br />a water -resistive vapor -permeable barrier. The individual layers <br />shall be installed independently such that each layer provides a <br />separate continuous plane and any flashing intended to drain to <br />the water -resistive barrier is directed between the layers. The <br />barriers shall consist of one of the following. <br />1. Two layers of an approved water resistant barrier material in <br />accordance with R703.2. <br />2. One layer of an approved water -resistive barrier (paperbacked <br />stucco lath) over an approved synthetic house wrap. <br />R703.4 Flashing. <br />Approved corrosion -resistant flashing shall be applied <br />shingle -fashion in a manner to prevent entry of water into the wall <br />cavity or penetration of water to the building structural framing <br />components. Flashing shall be installed at the following locations. <br />• Exterior window/door openings. <br />• Intersection of chimneys or other masonry contructions with <br />frame walls. <br />• Under and at the ends of masonry, wood or metal copings <br />and sills. <br />• Continuously above all projecting wood trim. <br />• Where exterior porches, decks or stairs attach to a wall or <br />floor assembly of wood -frame construction. <br />• At wall and roof intersections <br />• At Built-in gutters. <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 SQ. IN. OF NET FREE AREA / UNIT <br />• SOFFIT VENTS 7 SQ. IN. OF NET FREE AREA / SQ. FT. <br />0 u7 <br />T <br />M <br />a <br />co <br />Ln CD <br />C <br />� LU <br />�V <br />— <br />O w <br />TM <br />1— <br />2 <br />i� � <br />o <br />m N <br />LUN <br />p <br />Cl) <br />c ID M <br />amp <br />N <br />O o <br />coVLL <br />MEN=o <e <br />rnM <br />0co <br />LOg.v <br />rn Q d <br />A 1 <br />B D. <br />x.� s.n.;r <br />N �O <br />12 <br />U) Z r M oop Z 'I ..] Z <br />o/ w <br />Nam. <br />LULU <br />acne <br />Z 0 <br />C N 75 it <br />z <br />NM scP <br />Z <br />LU N Q M D A <br />w <br />---- <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 2017 Florida Building Code - <br />Residential 61h Edition. Engineer's signature and seal is only for <br />the structural engineering portions of the drawing pages bearing <br />Engineers signature and seal. <br />Is 1111111116. M AL <br />4600 W. Cypress St, Suite 2001 Tampa, FL 33607 <br />www.LennarTampa.com <br />oZ <br />0 <br />$Q <br />za <br />a� <br />�F <br />00 <br />OLc <br />LU <br />0wZ <br />ul <br />a � <br />cw0� <br />0 <br />N <br />Z O <br />�\ <br />X Z <br />QZ <br />C <br />G <br />Q� <br />a <br />z <br />O <br />Q <br />�w <br />/�) <br />U / <br />LL. <br />O O z <br />¢ Y P <br />' <br />O <br />m a <br />N <br />Or- ¢z <br />o <br />z <br />z <br />,—I <br />�o�� <br />ul 38 <br />w <br />�n <br />u.i <br />= 4 Z <br />J <br />ri <br />LJ.I <br />5' <br />¢ <br />z <br />Ln t � <br />$r-8 <br />< z <br />In <br />z <br />toM <br />W <br />0o <br />z <br />g <br />LU <br />= <br />�Z <br />a <br />,-+ <br />a <br />cn <br />o <br />SCALE : AS NOTED <br />DATE : 3/29/2018 <br />TECH: JMUROSKI <br />VERSION NO. 5ol <br />SHEET NO. <br />5.0 <br />