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3 <br />m <br />N <br />0 <br />a <br />N <br />N <br />i <br />ATTIC VENTILATION CALCULATIONS - 131 JRB <br />ATTIC VENTILATION REQUIRED <br />UPPER VENTILATION PROVIDED <br />1/150 Rule <br />300 Rule <br />Ridge <br />Off -Ridge <br />(No Upper Ventilators <br />(Must Provide <br />e Upper Ventilators) <br />Vent Amt <br />Amt. <br />Req.) <br />(Ft) <br />Total <br />Ventilation <br />ATTIC <br />Provided <br />SPACE <br />SQFT <br />Total SQ <br />SQ. FT. <br />SQ. IN. of <br />by Upper <br />SQ. IN. of . . <br />ventilation of vented <br />. <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 />required soffit <br />ventilation <br />soffit <br />by upper <br />Ventilation <br />Ventilation <br />needed <br />required <br />needed <br />ventilators <br />Main <br />21.00000 <br />2,000000 <br />Floor <br />2377 <br />2282 <br />326 <br />1141 <br />81 <br />570 <br />0 <br />591.0 <br />315.0 <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 - ELEV-Bl <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 II <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 pant 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 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 />I Coastal FlashinQs II <br />All flashing material for coastal locations (ex: within 3,000 feet of the <br />ocean) shall be corrosion resistant material (ex: zinc and/or stainless <br />steel) and shall be selected for compatibility with adjacent wood <br />preservatives per the manufacturer's recommendations. 11 <br />o <br />```�����1\9111!!lt6lrry��spi <br />W <br />SE <br />�. N <br /><: 0Q:_z <br />�0. <br />r • <br />CJ <br />_ <br />•E <br />. <br />� O F SSN+Oi�* <br />To the best of the Engineer's knowledge, information and belief, <br />the structural plans and specifications contained <br />within these <br />drawings comply with the 2017 <br />Florida Building Code - <br />Residential 8th Edition. Engineer's signature and seal is only for <br />the structural engineering portions of" drawing pages bearing <br />Engineer's signature and seal. <br />W <br />14 <br />0 <br />�m <br />N C4ee�� <br />M <br />J J <br /># LL LL <br />J <br />O <br />g <br />:: <br />LL <br />M <br />J W <br />LL LL a <br />W N <br />ni: <br />aWa o <br />Y <br />Z <br />ayCL_e <br />o <br />0 0: <br />W 0 0 <br />LC N <br />E T <br />m J <br />m o <br />m o <br />Z_ <br />IL11yWj <br />ILL <br />N O <br />N �! <br />0 M <br />6 <br />z <br />°6 <br />J <br />OElII <br />W <br />(D C <br />CM <br />z � <br />z g <br />J <br />a <br />tN <br />Z <br />•0 <br />o <br />N <br />w t" <br />O �$ <br />`Cn <br />M <br />N <br />W <br />Z <br />_J <br />LL <br />G <br />Z <br />Q <br />8 <br />a <br />°w¢ <br />o E <br />ZN <br />w: ig <br />IBM <br />rp <br />F o <br />ZN <br />J� <br />8 <br />�Z <br />LaU <br />aZ <br />W <br />a <br />,y u. <br />a <br />Ul <br />rWt <br />fFC <br />iJi <br />NZ <br />=J <br />R <br />J <br />i6 <br />1° <br />L <br />Co <br />a� <br />N <br />O <br />.-. <br />N <br />a <br />C m <br />co <br />a) <br />� <br />"It <br />Z N <br />T <br />T <br />O <br />T <br />� <br />O <br />E <br />N <br />C') N <br />r <br />z <br />zE <br />O <br />E •• <br />LD` <br />V <br />C <br />0.0 <br />J <br />Q <br />J <br />JOB <br />NO: <br />20-0560 <br />SCALE : <br />AS NOTED <br />SHEET NO. <br />5 <br />