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c <br />aD <br />-v <br />v <br />x <br />Cn <br />rn <br />0 <br />0 <br />[V <br />r- <br />L2 <br />r- <br />I <br />m <br />rn <br />it <br />c <br />aD <br />v <br />S <br />LO <br />0 <br />0 <br />J <br />n <br />� I <br />Q <br />ca <br />E I <br />0 <br />0 <br />x <br />00 <br />N <br />00 <br />N <br />w <br />ATTIC VENTILATION CALCULATIONS - 131 <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 />( ) <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: f4°=1 r-o" <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 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 />r <br />Z M <br />_ o <br />CD <br />Z <br />z <br /><c <br />a <br />z <br />V) QD <br />0 <br />Lu <br />Q <br />°V — <br />O L" <br />�Ln ~ <br />C5 <br />0 <br />m N <br />L.0 <br />F - <br />-- 8 <br />a Cl) C <br />r0 � Ro <br />O o N <br />0 <br />1LL <br />00 <br />Q 0) <br />O. O <br />0: <br />rn Q o <br />BD. <br />e� <br />N �O <br />N <br />(O <br />♦/� Q M (11 <br />U) a I 1?SC?=1 <br />in U_ <br />W ,,; uw w <br />a <br />_ <br />� � a <br />W IV a� <br />c <br />illin S <br />N E mlii <br />`Aikp,N <br />vVIV <br />��,\%N OWN <br />rL <br />Go <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 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 />LENNAR <br />4600 W. Cypress St, Suite 200 1 Tampa, FL 33607 <br />www.LennarTampa.com <br />Oz <br />0 <br />Ln <br />�o <br />z ¢ <br />¢E <br />f F <br />w<Ce X <br />Uz00 <br />z 0 Z <br />�gWz <br />W <br />O N <br />W LL <br />Q <br />O L <br />^,O <br />W <br />Z Z <br />i <br />Z <br />�3 <br />U <br />J W <br />g <br />^J <br />n <br />O 0 Z <br />." <br />a <br />ILL <br />0 <br />¢ U <br />m a <br />O <br />r- 2 <br />uJ Z J¢ <br />uJ w <br />a/ <br />"''_0 <br />Q <br />O <br />Z <br />E) 0 <br />W O � O <br />J <br />Lr)¢ <br />1--1 <br />LLI <br />2:Q <br />w w <br />N � Y o <br />Ln <br />IAA <br />Q <br />Z <br />Z <br />L <br />g�Qo <br />V ) <br />fA` <br />Z <br />W <br />O <br />M <br />W <br />i <br />UI <br />_ <br />tn <br />¢ z <br />rn <br />,--I <br />a <br />U0 <br />s <br />SCALE : AS NOTED <br />DATE : 11 /28/2018 <br />TECH: MJAMES <br />VERSION NO. 4mO <br />SHEET NO. <br />5.0 <br />