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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 <br />of vented <br />IN. of <br />of <br />ventilation to <br />5Q. 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 />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: %4'=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 SQ. IN. OF NET FREE AREA / UNIT <br />• SOFFIT VENTS 7 SQ. IN. OF NET FREE AREA / SQ. FT. <br />Z M <br />0 <br />— o <br />to <br />z� <br />Q <br />a. <br />V) U <br />cn <br />Lij <br />U — <br />O "' <br />E <br />'— <br />.� <br />o 0 <br />m 04 <br />U <br />W E <br />0M co <br />N 0 N <br />Rig — $ <br />O o 0 <br />_ <br />a) <br />U_ co <br />y e <br />Q rn <br />U) n o <br />� <br />v rn <br />Q o <br />y <br />`- <br />N <br />o... a rn r-. R' <br />o-_o 0 4d��, <br />N <br />og'ay' <br />Z o /�'p <br />P <br />Z `� <br />I- a ` <br />LL Z <br />Z <br />a �•� <br />cE ,;. <br />, <br />. <br />cil <br />To the best of the Engineer'§+cgp iedge,�informat`I aw <br />belief, the structural pratis ,4nd spec 7c'-'t7on„`c',eotttained`°� <br />within these drawings comply with the 2617 Florl"`.` ` <br />Building Code - Residential 6ttt Ed7tidn:; ?F.ngihet•'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 />0 <br />O <br />Z fV <br />O <br />� M O <br />M <br />Q 'p <br />d' <br />C.. to <br />V7I- <br />M <br />H Ll ^ <br />oC U n*--I <br />- 00 <br />Q <br />fo <br />Z <br />W <br />�� <br />OZ <br />W0 <br />Za <br />9 <br />F¢- <br />w¢ofX <br />UZOO <br />ro <br />Z , uJ <br />Z Z <br />o E W <br />a 2o <br />O <br />M� <br />Lu OO <br />Lu <br />W <br />MW� <br />LO <br />O p <br />/cu <br />V <br />2:Z <br />15 <br />LL <br />' <br />L <br />Z <br />0 <br />z <br />J <br />�W <br />U <br />= <br />Iro <br />0- <br />uJ <br />o <br />O <br />.� <br />Li <br />¢ O z <br />< rC-J <br />.,: <br />O <br />O <br />QO <br />Lu X O V <br />m a <br />*k�1. <br />a IL <br />Lu <br />p <br />Z <br />V_��� <br />Z <br />W <br />T.I <br />Lr% <br />W <br />CY <br />w 0auo <br />W <br />V' O w U <br />N <br />Q <br />a <br />z <br />L o <br />�¢�z <br />N <br />Z <br />a� <br />�z <br />O <br />CZ( <br />J <br />LU <br />= <br />J o <br />¢ w <br />SCALE : AS NOTED <br />DATE : 1 /4/2018 <br />TECH: ERAND <br />VERSION NO. 3 ■ 0 <br />SHEET NO. <br />5.0 <br />