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c <br />v <br />v <br />00 <br />to <br />0 <br />0 <br />C'4 <br />r— <br />E <br />a0 <br />e <br />00 <br />r <br />E <br />O <br />S <br />M <br />N <br />N <br />ATTIC VENTILATION CALCULATIONS - B1 <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 />21.00000 <br />2,000000 <br />Floor <br />2377 <br />2282 <br />326 <br />1141 <br />81 <br />570 <br />0 <br />591.0 <br />315.0 <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 <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 -Resistive Barriers. <br />Water -resistive 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 (paper <br />backed 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 constructions 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 11150 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 />z M <br />_ o <br />z�z <br />Q <br />a <br />z <br />V, Ch <br />vi <br />w <br />�U <br />O w <br />Of <br />ZD <br />T <br />E <br />(n <br />V <br />o n <br />m N <br />'- E <br />pp <br />C: C13 <br />Co <br />U <br />= ai <br />O o N <br />U N <br />!:- V- o°OO <br />M Q d <br />B D®' <br />N �O <br />O N a <br />Z W MNodoZ W� Z <br />F °3 � op <br />SLLo � �j w <br />W v' <br />� <br />W V Q LL o a <br />13 Z p o 0 <br />N o � oa <br />Z1" - Q <br />LLZ 5 Q <br />pWN <br />�wiv.Fp.�rra. <br />-R <br />-< <br />Q7 <br />° 4 <br />V, <br />FJ Q" •' <br />'OOF? 0 F E <br />tE l <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 6th 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 />L N A R <br />4600 W. Cypress St, Suite 200 1 Tampa, FL 33607 <br />www.LennarTampa.com <br />oz <br />0 <br />Ul <br />z Q <br />¢f <br />f� <br />w<�� <br />U400 <br />zaw�X <br />Rzz <br />}afJ <br />a � <br />O��o <br />w <br />w <br />Ln OO <br />uLn <br />L- <br />z O <br />r0 <br />f <br />z <br />�3 <br />z <br />o <br />O <br />J <br />W <br />= <br />VN <br />CL <br />u <br />0OO <br />1 L <br />O <br />Q Y <br />UOO�a <br />O� <br />�p, <br />po <br />w<Q0 <br />Q <br />4a <br />Z <br />1� <br />LO20 <br />Z <br />1� <br />z(32� <br />a w <br />J <br />,Ln-I <br />LLLi <br />Lij <br />Q <br />Zzz <br />Z <br />�z0 <br />�i O <br />m <br />O <br />06 <br />Z <br />�[ <br />= <br />J 1 <br />a <br />rn <br />,- 4 <br />a <br />cn <br />0 <br />SCALE : AS NOTED <br />DATE : 11 /2/2018 <br />TECH: KFRAZER <br />VERSION N0. 4mO <br />SHEET NO. <br />5.0 <br />