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ATTIC VENTILATION CALCULATIONS - Al <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 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 />(See SElev) <br />required <br />q needed <br />required <br />soffit <br />yupperVentilation <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: 14"=V-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-Resisitive Barriers. <br />Water-resisitive 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 (paperbacked <br />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 contructions 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 SO. IN, OF NET FREE AREA / UNIT <br />• SOFFIT VENTS 7 SO. IN. OF NET FREE AREA! SQ. FT. <br />u, <br />z� <br />z� <br /><C <br />a <br />z <br />V^)' 0 <br />� w <br />O c <br />=3o <br />E <br />U <br />CIA <br />co <br />tJJ <br />M <br />C f0 fM <br />U <br />ao <br />0.2 <br />) <br />Q co <br />� G <br />B <br />D• <br />co <br />ul ow <br />a <br />v S Q <br />inz � <br />11Lu.� El� <br />a � <br />W <br />0 <br />01 <br />To the best of the E gyK er's k I¢d& ati d <br />belief, the structural plat,i," ��sppeclfications cq d <br />within these drawings comply hllfphelqN�}rtla <br />Building Code - Residential 6th Edd o7 gineer's <br />signature and seal is only for the structural engineering <br />portions of the drawing pages bearing Engineer's signature <br />and seal. <br />1t <br />0 <br />Z N <br />0 N n <br />P-44-'p <br />Ili M O <br />z <br />M <br />Q 'gyp Ln <br />a cn •L �• <br />0 <br />In <br />v LIL <br />z <br />M <br />U 00 <br />ao <br />zCY <br />� <br />W <br />Z � <br />J � <br />J <br />oZ <br />za <br />�a <br />F- <br />Lu <br />Z, <br />QQ� <br />OVCFW� <br />W <br />M�M <br />W <br />OZ lz <br />o <br />U <br />Z <br />vi 3 <br />^ <br />�.., / <br />0 <br />Q <br />a <br />U <br />= <br />___I <br />LU f <br />89 <br />J <br />O <br />O <br />� <br />a�a <br />O <br />Z <br />$fig <br />o�Z <br />J <br />--ILLJ <br />W <br />Q <br />Z <br />a u- 8 <br />Z U <br />LUZ <br />N <br />ON <br />ZZ <br />LU <br />m <br />N <br />4Z <br />T� <br />rn <br />J <br />i <br />W <br />,-4 <br />a <br />cn <br />z <br />SCALE : AS NOTED <br />DATE : 3/18/2018 <br />TECH: FFLORES <br />VERSION NO. 10 <br />SHEET NO. <br />5.0 <br />j'. <br />