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I I 1 1 1 1 1 1 _L 11,1 1 1 1 1 1 I I , I I I I . I 1 r - 1. • I I I . I i _- -- _ <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. ►N. of <br />SQINof <br />Ventilators <br />ventilation <br />soffit <br />ventilation <br />vented <br />be provided <br />Ventilation <br />. . <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 />10112 <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: 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-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 SO. IN. OF NET FREE AREA / LINEAR FT. <br />• OFF -RIDGE VENTS 138 SQ. IN. OF NET FREE AREA / UNIT <br />• SOFFIT VENTS 7 SO. IN. OF NET FREE AREA / SQ. FT. <br />• O'HAGIN WEATHERMASTER (Shingle Roof) - 72 SQ. IN. OF NET FREE AREA/ FT. <br />" (Sq. Ft. Soffit Needed) x 7 = (Sq. In. Needed)172 = Amount of O'Hagin Vents Needed <br />• LOMANCO DECK -AIR (Shingle Roof) - 9 SQ. IN. OF NET FREE AREA / FT. <br />Formula: (Sq. Ft. Soffit Needed) x 7 = (Sq. In. Needed)19 = Linear FL of Deck -Air Needed) <br />• O'HAGIN (Tile Roof) - 86.25 SQ. IN. OF NET FREE AREA / VENT <br />"Formula: (Sq. Ft. Soffit Needed) x 7 = (Sq. In. Needed) / 86.25 = Amount of O'Hagin Vents Needed <br />0� <br />Z c� <br />C) <br />— CD <br />zC, <br />Q <br />J <br />Q_ <br />C <br />Q) <br />4'J w <br />O w <br />-E <br />a <br />~ <br />0 <br />in III- <br />C) <br />L.1..1 <br />~ oE <br />p <br />dM <br />M <br />Ly <br />O o N <br />} t? <br />;........ _ <br />U <br />9 O <br />o ns <br />i� <br />rn <br />rn a C, 0 <br />� zt <br />IV S. <br />Q <br />rn o <br />N C B n C <br />o <br />ram°' a �:..1 G <br />call <br />z._ <br />LL W <br />kie <br />UJ <br />�q ..•y <br />< t <br />UEL <br />LL <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 />0 <br />O <br />z N <br />O N n <br />r-4 LJ O <br />z <br />I> -+HMO <br />M <br />Q � 0 Ln <br />11 U-) <br />V) <br />z <br />QU_ �n <br />CL M <br />QI- (j <br />00 <br />z <br />z E <br />LULU <br />CD <br />OZ <br />z a <br />f a <br />a00 <br />d?U() <br />WOwl, <br />LIJ <br />g�� <br />I Z <br />K f J <br />o0S <br />" <br />g J u <br />>g <br />z_ <br />z <br />-°a <br />ON <br />W <br />T--1 <br />z <br />o <br />Ov <br />J <br />CL <br />� <br />LULU <br />LU <br />8 o <br />d. <br />C:),^ <br />0 <br />J ko <br />O <br />QY <br />8 <br />�a0� <br />��m� <br />A <br />1 ` <br />CC <br />Q <br />Wz� <br />C7QZ� <br />$OOgg <br />Z <br />z <br />fV <br />N <br />u_ <br />zd$I_ <br />J <br />rl <br />lLl <br />Q <br />LU <br />za~ <br />la- Z o <br />M <br />Z <br />z <br />m <br />o <br />g <br />Lu <br />00 <br />SCALE : AS NOTED <br />DATE : 12/28/2017 <br />TECH: ERAND <br />VERSION NO. 10 <br />SHEET NO. <br />5.0 <br />�M <br />