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V <br />i:� <br />DO <br />ATTIC VENTILATION CALCULATIONS <br />ATTIC VENTILATION REQUIRED <br />UPPER VENTILATION PROVIDED <br />1/150 Rule <br />Rule <br />Ridge <br />Off-Ridge1/300 <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 />ventilation of vented <br />IN. of <br />of <br />vented <br />ventilation to <br />be provided <br />SQ IN. of <br />SQ. IN. of <br />Ventilators <br />See Elev <br />( ) <br />reqcared S0� <br />ventilation <br />soffit <br />yupperVentilation <br />Ventilation <br />needed <br />required <br />needed <br />ventilators <br />Main <br />19.000000 <br />2.000000 <br />Floor <br />2276 <br />2185 <br />312 <br />1092 <br />78 <br />546 <br />561.0 <br />285.0 <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: Y4'=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 />I Attic Ventilation I <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 save or comics vents. <br />"CALCULATIONS BASED ON THE FOLLOWING VALUES, SEE ROOF PLAN" <br />(Values to be verified with Manufacturer Specifications) <br />• RIDGE VENTS 15 SO. IN. OF NET FREE AREA / LINEAR FT. <br />• OFF -RIDGE VENTS 138 SO. IN. OF NET FREE AREA / UNIT <br />• SOFFIT VENTS 7 SQ. IN. OF NET FREE AREA / SO. FT. <br />C9 <br />Z M <br />Z <br />Q <br />J <br />a <br />V) (D <br />4 --J w <br />CD <br />�_ C) <br />- <br />0 w <br />U <br />LLJ <br />CM <br />m N <br />U. <br />Q, <br />ro <br />Lo <br />A o <br />AA I III <br />D�D. <br />NN C� <br />�o <br />4 <br />Z� <br />a in w ' <br />LL ow <br />W > 9LU <br />AL <br />Z 0 a �QCk �a <br />N <br />LL <br />°\'N Q <br />n ,_.I <br />4,Q- <br />- t <br />Q \O <br />_v <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 />Restdential 6th 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 />LENNAR <br />4600 W. Cypress St, Suite 2001 Tampa, FL 33607 <br />www.LennarTampa.com <br />9 <br />W <br />Cb�zOO <br />�L <br />J <br />m <br />O <br />fy <br />z <br />U <br />� <br />_ <br />�� <br />1L <br />. <br />0 <br />J <br />O <br />ej <br />W E <br />Z <br />Z <br />UJ <br />W <br />z <br />Q <br />Zia~ <br />00 <br />Ica <br />oorn <br />Z <br />g <br />U <br />= <br />�S <br />0 <br />,-a <br />a <br />to I <br />E <br />SCALE : AS NOTED <br />DATE : 10/29/2018 <br />TECH: MJAM ES <br />VERSION No' 4mO <br />SHEET NO. <br />5.0 <br />