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1.1 <br />ATTIC VENTILATION CALCULATIONS - Al <br />ATTIC VENTILATION REQUIRED <br />UPPER VENTILATION PROVIDED <br />1/150 Rule <br />1/300 Rule <br />Ridoe <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. I N. of of vented <br />IN. of <br />of <br />ventilation to <br />SQ. IN. of <br />SQ. IN of <br />Ventilators <br />ventilation soffit <br />ventilation <br />vented <br />be provided <br />Ventilation <br />Ventilation <br />(See Elev) <br />required needed <br />required <br />soffit <br />by upper <br />needed <br />ventilators <br />Main <br />4.000000 <br />2.000000 <br />Floor <br />1080 <br />1037 <br />148 <br />518 <br />37 <br />259 <br />336.0 <br />60.0 <br />276.0 <br />(Zone 1) <br />Main <br />0.0 <br />0.000000 <br />Floor <br />16 <br />15 <br />2 <br />8 <br />1 <br />4 <br />0.0 <br />0.0 <br />(Zone 2) <br />0.0 <br />Upper <br />16.000000 <br />0.000000 <br />Floor <br />1166 <br />1119 <br />160 <br />560 <br />40 <br />280 <br />240.0 <br />(Zone 3) <br />240.0 <br />0.0 <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: Y4"=l'-O" <br />General Notes <br />ROOF CRITERIA: <br />0 12" OVERHANG U.N.O. <br />0 PLUMB CUT FASCIA ROOF <br />0 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 layeis <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 11300 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 />(D <br />C) <br />Q) <br />4-J U_J <br />U <br />0 LU <br />Sm <br />E <br />0 <br />ra <br />2 <br />C", <br />LLJ <br />C" <br />MC -COO C'21) <br />0 <br />U_ CO <br />:E; <br />=3 - 00 <br />0 _Ie i:z- <br />< 0 <br />co CL cD <br />CL <br />A I <br />RD. <br />N C B D C <br />W 8 "s P, 1� <br />c�' 1­ 6 a' 0 <br />do z <br />U) <br />'y <br />U!;�i :'� <br />= <'33,6 c,::, I <br />LU <br />— 4i C"-- K! <br />UJ tj �C.G <br />z Islip <br />'�.FD <br />" W".FD 0 <br />SkT449' <br /><'. 700 <br />% <br />11'C <br />C-_z <br />v- <br />N <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. Engineers signature and seal is only for <br />the structural engineering portions of the drawing pages bearing <br />Engineers signature and seal. <br />IME A <br />LE N "" <br />4600 W. Cypress St, Suite 200 1 Tampa, FL 33607 <br />www.LennarTampa.com <br />t5 <br />0 z <br />z <br />z <br />CL <br />LU < Q� <br />U480 <br />0 <br />Enwm <br />zuj� <br />U 0 LU Z <br />8 Lu F4 <br />@ <br />< <br />'z') <br />z <br />z <br />z <br />z <br />L4 3: <br />0 <br />00 <br />< <br />=1 Lu <br />9W � <br />U <br />00 <br />_J <br />0— <br />6,z <br />0 <br />LL <br />0 <br />0 <br />0 <br />r-4 <br />cc <br />Z<Z< <br />LLJ g� < � <br />< UJI: 6� <br />1;_� u ge <br />z <br />Z <br />C <br />LL 0 - , <br />C:)" <br />LIJ <br />Lr) <br />6i <br />uJ <br />�i z 0 <br />UJ <br />8 g <br />C:) <br />00 <br />r-4 <br />Z <br />z <br />tu <br />LU <br />32 z <br />z <br />cc) <br />0 <br />06 <br />Z <br />:5 <br />LU <br />2 <br />_J y) <br />iF <br />z <br />r_1 <br />T-4 <br />0- <br />V) <br />SCALE AS NOTED <br />DATE 10/29/2018 <br />TECH: MJAMES <br />VERSION No' 10 <br />SHEE'T NO. <br />5.0 <br />