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00 <br />N <br />0 <br />a <br />E <br />E <br />0 <br />x <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 />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 />required <br />needed <br />required <br />soffit <br />by upper <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: %4'=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-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 SQ. IN. OF NET FREE AREA / UNIT <br />• SOFFIT VENTS 7 SQ. IN. OF NET FREE AREA / SQ. FT. <br />Z M <br />—o <br />z� <br />Q <br />J <br />a <br />Q) C <br />4 — w <br />�_ o <br />�V — <br />O w <br />E <br />o <br />.� c%� '— <br />0 <br />m 04 <br />U <br />■ M .' H— E <br />CD M <br />07 M <br />0 C N <br />LL <br />0 OD <br />U <br />rti �i <br />o <br />ME o <br />in g- v <br />tRQ rn <br />y . <br />'rn Q 6 <br />A <br />'� n <br />t l / <br />♦ <br />�a i <br />V <br />�'• � o'er �- <br />m °° <br />Z <br />o <br /><C. <br />b v <br />O <br />❑ ❑ <br />To the best of the Engineer's knowledge, information, and <br />belief, the structural plans and specifications contained <br />within these drawings comply with the 2017 Florida <br />Building Code - Residential 6th Edition. Engineer'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 />1f <br />0 <br />O(V <br />z <br />O N 11 <br />> O <br />M <br />Ln <br />Q '� <br />a to d' <br />� u) <br />Q + <br />< U o - ono <br />Q <br />E � <br />Z <br />W <br />J� <br />J <br />z <br />3� <br />w� <br />zE <br />f <br />w z¢arra <br />UZOp <br />Z w ZQ <br />z <br />O <br />LLJ <br />w0 <br />0 Q � <br />Uti,I <br />O <br />L <br />O Z <br />z O <br />J <br />T <br />U <br />f z <br />H <br />V)3 <br />J <br />UU <br />= <br />Lf <br />LL <br />89 <br />aYVQ�Q <br />cri o N <br />J T'I <br />O <br />X OU <br />O <br />O <br />oo <br />f <br />AV <br />'` <br />z3HA <br />< <br />Qo <br />z <br />Jr-1 <br />LLI <br />z <br />Z <br />zou <br />��2a <br />w <br />t- <br />0° <br />0 <br />{� <br />oo <br />z <br />4-5= <br />` z <br />rn <br />V-q <br />a <br />to <br />SCALE : AS NOTED <br />DATE : 3/16/2018 <br />TECH: MJAMES <br />VERSION NO. 4nO <br />SHEET NO. <br />5.0 <br />