Laserfiche WebLink
W <br />RIDGE <br />_ <br />L0 <br />N <br />O <br />J <br />N <br />tR <br />CO <br />rn <br />E <br />0 <br />co <br />N <br />N <br />W <br />ATTIC VENTILATION CALCULATIONS - B1 <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 o <br />f vented <br />INOf <br />of <br />ventilation to <br />SQ. 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 />22.00000 <br />2.000000 <br />Floor <br />2002 <br />1922 <br />275 <br />961 <br />69 <br />480 <br />0 <br />606.0 <br />330.0 <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: %4'=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 11150 of the area of the vented <br />space. The ventilating area may be reduced to 11300 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 />0 V <br />zC0 <br />0 <br />— o <br />Z N <br />z� <br />Q <br />a <br />z <br />to (D <br />w <br />}J <br />•U - <br />OUJ <br />�v) C)O2) <br />m N <br />LLJ pO <br />O o 0 <br />\ fn <br />♦ J <br />L lL CO <br />7 <br />O <br />Q rn <br />C0 0. O <br />CL <br />rn ¢ o <br />A 1 <br />B D. <br />N C B D c <br />0, <br />LU v N <br />�Noo <br />Z W �� z <br />r J T C a <br />U) � <br />rn"-o w <br />LU N� N w <br />W ELL a <br />a <br />Z <br />04 a <br />UM <br />N w <br />dv U <br />J, <br /><,L <br />Ob ES°aeYRE <br />`141111 <br />ff1t!!!11> <br />To the best of the Engineer's knowledge, information and belief, <br />the structural plans and specifications contained within these <br />drawings comply with the 2017 Florida Building Code - <br />Residential 6th Edition. Engineers signature and seal is only for <br />the structural engineering portions of the drawing pages bearing <br />Engineers signature and seal. <br />L E NAR <br />4600 W. Cypress St, Suite 200 1 Tampa, FL 33607 <br />www,LennarTampa.com <br />€0z <br />3t;1 <br />za <br />WazCr <br />Uz00 <br />Z ULU : � <br />T0zZ <br />O,0 <br />awa,� <br />O W N <br />L� ZZ U <br />L <br />z <br />Z O <br />,.> <br />X z <br />�o <br />7 <br />Z <br />0 <br />`� <br />Q <br />z � <br />U <br />= <br />Y-1t <br />0 <br />ILL. <br />µoo0 <br />F Y P <br />g <br />') <br />O <br />o <br />� �a <br />Lr) <br />cc <br />µ{1.lIima <br />U O Q <br />N <br />r� <br />z�Z� <br />Q <br />Bozo <br />��� <br />Z <br />z <br />W <br />rl <br />Li) <br />LLI <br />`� oa 0 <br />& z <br />J <br />rl <br />UI <br />nl¢u<v <br />8~ <br />N <br />Q <br />Z <br />0 <br />��Z <br />*k <br />dam' <br />Z <br />tu <br />z 0 <br />0 <br />0p <br />° <br />r <br />00 <br />Z <br />g <br />t11 <br />= <br />171 <br />a UJ <br />,--I <br />SCALE : AS NOTED <br />DATE : 4/12/2018 <br />TECH: MJAMES <br />VERSION NO. <br />3.0 <br />SHEET NO. <br />5.0 <br />