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n� <br />:W <br />Cq <br />I <br />ATTIC VENTILATION CALCULATIONS <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 />SO. IN. of <br />by Upper <br />SQ. IN. Of of vented <br />ventilation <br />IN. of <br />of <br />vented <br />ventilation to <br />be provided <br />SO. IN, of <br />SO ' IN i of <br />Ventilators <br />(See Elev) <br />required soffit <br />ventilation <br />soffit <br />by upper <br />Ventilation <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 />— <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'-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 />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 eave or cornice vents. <br />"CALCULATIONS BASED ON THE FOLLOWNG VALUES, SEE ROOF PLAW <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 SQ. IN. OF NET FREE AREA / UNIT <br />• SOFFIT VENTS 7 SQ. IN. OF NET FREE AREA / SO. FT. <br />CD V <br />V) (D <br />(a) —/) <br />C <br />LU <br />0 LU <br />LLJ <br />C" <br />0) C) <br />C=: <br />U <br />2L� <br />< <br />I <br />< Ci <br />n DO <br />0 <br />N-C B D C <br />U HIP <br />- <br />LLI I <br />RIC <br />zz W1. F� <br />C=) <br />To the best of the Engineers knowiedge, information and Wlef, <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 engines6ng portions of the drawing pages bearing <br />Engineers signature and seal. <br />LENNAR <br />4600 W. Cypress St, Suite 200 1 Tampa, FL 33607 <br />www.LennarTampa.com <br />z -C <br />0 <br />!zJ <br />�i 0 <br />> <br />z <br />13� <br />Q <br />0 <br />F- <br />14� <br />z <br />n <br />U <br />CL <br />LL <br />0 <br />11 <br />J <br />N <br />0 <br />LU <br />< <br />Z <br />Z <br />LU <br />J <br />Ln <br />V-4 <br />Z <br />< <br />z <br />17�4 <br />00 <br />r-4 <br />ca <br />0 <br />N <br />06 <br />Z <br />t_U <br />SCALE AS NOTED <br />DATE 10/29/2018 <br />TECH: MJAMES <br />VERSION NO' 4s0 <br />SHEEr NO. <br />5.0 <br />