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COND. <br />' <br />a <br />I <br />yGo <br />��Q <br />4'-0' ROOF VENT <br />RIDGE <br />' <br />_ <br />'y, <br />I <br />�A <br />�y a <br />$ <br />J I <br />= <br />N <br />_ <br />I <br />4'-0' ROOF VENT <br />a <br />RIDGE <br />9'-0' RIDGE VENT JQ�� <br />1E <br />E <br />L <br />I <br />NiLO <br />a <br />( a <br />��Q <br />N <br />fn <br />' fn <br />(V <br />N_ <br />a�i <br />v <br />I <br />M <br />L <br />RIDGE I <br />J <br />I <br />12 <br />L E <br />A <br />3 <br />tC- <br />Q <br />'-011 3,_011 <br />N <br />S <br />11-On <br />E <br />c <br />L� <br />0 <br />U <br />N <br />.o <br />a <br />ii <br />ON <br />M <br />M <br />ROOF <br />PLAN <br />3 <br />SCALE: Y4'=1'-0" <br />ATTIC VENTILATION CALCULATIONS - B1 <br />General Notes <br />ATTIC VENTILATION REQUIRED UPPER VENTILATION PROVIDED <br />ROOF CRITERIA: <br />1l150 Rule Ridge <br />1/300 Rule Off -Ridge <br />• PLUMB CUT FASCIA ROOF <br />(No Upper Ventilators (Must Provide Upper Ventilators) Vent Amt Amt. <br />• PITCH PER ELEVATION <br />Req.) (Ft.) <br />Total <br />**G.C. VERIFY ROOF PITCH** <br />Ventilation <br />ROOF PITCH VARIES PER SUBDIVISIONS IT IS THE <br />ATTIC Provided <br />SPACE SQ. FT. Total SQ. SQ. FT. SQ. IN. of by Upper <br />CONTRACTORS RESPONSIBILITY TO VERIFY <br />SQ. IN. of of vented IN. of of ventilation to SQ. IN. of SQ. IN. of Ventilators <br />ROOF SLOPE REQUIREMENTS WITH TRUSS <br />ventilation vented be provided See Elev) <br />MANUFACTURER. <br />required soffit ventilation soffit by upper Ventilation Ventilation <br />( <br />needed required needed ventilators <br />**ELECTRICAL SPECIFICATION NOTES** <br />Main 0.000000 0.000000 <br />THE SPECIFICATIONS FOR THE TYPE OF FIXTURE <br />Floor 0 0 0 0 0 0 0.0 <br />TO BE USED. LIGHT FIXTURES SHOWN ARE FOR <br />(Zone 1) 0.0 0.0 <br />LOCATION PURPOSES. <br />Upper 9 2.000000 <br />Exterior Covering <br />Floor 1533 1472 210 736 53 368 411.0 <br />(Zone 2) 135.0 276.0 <br />R703.7 Exterior plaster. <br />"*NOTE** <br />926 and ASTM C 1063. <br />GENERAL CONTRACTOR MUST ENSURE THAT PROPER VENTILATION IS PROVIDED AT EAVES/SOFFITS AS <br />REQUIRED BY FBC 6th ED. RESIDENTIAL. <br />• 12" OVERHANG U.N.O. <br />ELECTRICAL CONTRACTOR MUST VERIFY WITH <br />Installation of these materials shall be in compliance with ASTM C <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 he 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 />COND. <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 />O <br />R703.4 Flashing. <br />N Approved corro <br />sion -resistant flashing shall be applied <br />N <br />shingle -fashion in a manner to prevent entry <br />of water into the wall <br />cavity or penetration of water to the building structural framing <br />components. Flashing shalt 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 1l150 of the area of the vented <br />a <br />space. The ventilating area may be reduce <br />d to 1/300 provided that at least 40% <br />N0Lu twt no more than 50% of the required ventilation is provided in the upper port <br />ion of <br />the space to be ventilated.Upper ven <br />trl i <br />lators shall be located no more than 3 feet <br />:125 SLOPE 5:12 SLOPff (measured vertically) below the ridge or highest point of the space, with the <br />balance of the required ventilation provided by save or cornice vents. <br />O <br />-CALCULATIONS <br />BASED ON THE FOLLOWING VALUES, SEE ROOF PLAN'" <br />� <br />(Values to be verified with Manufacturer Specifications) <br />5:12 <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 />LOPE <br />• SOFFIT VENTS - 7 SO. IN. OF NET FREE AREA <br />U) <br />LLJ <br />/ SO. FT. <br />General Notes <br />Z M <br />z <br />z <br />Q <br />a <br />z <br />O c <br />e <br />� U <br />m <br />