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am61 sa <br />01 <br />ATTIC VENTILATION CALCULATIONS - A <br />ATTIC VENTILATION REQUIRED <br />UPPER VENTILATION PROVIDED <br />1 /150 Rule <br />1/300 Rule <br />Ridge <br />-Ridge <br />(No Upper Ventilators <br />(Must Provide Upper Ventilators) <br />Vent Amt <br />mt. <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 />bU 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 />23.0 <br />1.0 <br />Floor <br />2002 <br />1922 <br />275 <br />961 <br />69 <br />480 <br />483.0 <br />345.0 <br />1 38.0 <br />(Z one 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 —A <br />SCALE: Y4"=1'-0" <br />General Notes <br />ROOF CRITERIA: <br />0 12" OVERHANG U.N.O. <br />0 PLUMB CUT FASCIA ROOF <br />0 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 ASTIVI C 1063. <br />R703.7.2 Plaster. <br />Plastering wl 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 followring. <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 construction 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 intersecbons <br />0 At Built-in gutters. <br />I 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 />e OFF -RIDGE VENTS 138 SQ. IN. OF NET FREE AREA / UNIT <br />s SOFFIT VENTS 7 SQ. IN. OF NET FREE AREA / SQ. FT. <br />*If not enough vented soffit is provided due to fire protection, the contractor shall use <br />following approved vents: <br />e LOMANCO DECK -AIR (Shingle Roof) - 9 $0. IN. OF NET FREE AREA / FT. <br />**Formula: (Sq, Ft. Soffit Needed) x 7 - (Sq, In. Needed) 19 = (Linear Ft. of Dock -Air Needed) <br />0 <br />Cn <br />Ila <br />CL_ <br />:z <br />4—J LU <br />ra <br />0 LLJ <br />ra U <br />LU <br />Cc <br />CN <br />.2.= <br />U. 00 <br />0 <br />Al I <br />ElDe <br />on ft 00 <br />F_ d C� <br />1�1 0 z z <br />U) _J 2 <br />L <br />LL1 <br />LU 3 <br />z <br />AIL <br />LL n <br />YDUNG.0 <br />T <br />0 O';;i <br />FC-S <br />Q, <br />To the best of the Engineer's knowledge, Information and bellef, <br />the structural plans and specifications contained within these <br />drawings comply with the 2017 Florida Building Code - <br />Residential Oth Edition. Engineer's signature and seal is only for <br />the structural engineering portions of the drawing pages bearing <br />Engineers signature and seal. <br />LENNAR, <br />4600 W. Cypress St, Suite 200 1 Tampa, FL 33607 <br />www.LennarTampa.com <br />1 6 <br />a: <br />Lu <br />8 <br />C) <br />_0 <br />CL <br />1*4� <br />z <br />z <br />:z <br />0 <br />U <br />U-) <br />fy, <br />_J <br />LL <br />0 <br />r-4 <br />0 <br />Er <br />< <br />Z <br />Z <br />00 <br />V- <br />C"4 <br />LU <br />_J <br />Ln <br />T-4 <br />Lli <br />N <br />t.0 <br />r-4 <br />z <br />< <br />z <br />< <br />z <br />0 <br />Z <br />rn <br />'-4 <br />SCALE AS NOTED <br />DATE 11/2/2018 <br />TECH: KFRAZER <br />VERSION NO - 3ol <br />SHEET NO. <br />5.1 <br />