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00 <br />2 <br />E <br />0 <br />00 <br />W <br />ATTIC VENTILATION CALCULATIONS - Al <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. 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 />29.00000 <br />1.000000 <br />Floor <br />2373 <br />2278 <br />325 <br />1139 <br />81 <br />570 <br />0 <br />573.0 <br />435.0 <br />138.0 <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:1/4"=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 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 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 />U <br />Z o <br />z° <br />z� <br />Q <br />a <br />(n z <br />V, C_9 <br />4 ..J cn <br />w <br />f� p <br />°V — <br />0 w <br />~ <br />m N <br />W <br />E <br />—8 <br />� M C" <br />0aj 0M" <br />/ \ ($ <br />� / 1 <br />= LL <br />5 -00 <br />C)05 <br />Q m <br />Q o <br />LO <br />rn Q o <br />Al <br />B D. <br />,',C <br />N �O <br />Z W <br />� �LLo <br />W <br />W V �LL r a <br />L <br />� O <br />CCU <br />H o � <br />1 <br />Z H12 b q <br />W a N¢Mr a <br />�1�ltllE6@lltl�/fir � " � <br />.F e ❑ <br />•�^° <br />E <br />4� <br />lop?C <br />j�`cfltf€tEB't`t4'�e, <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. Engineer's signature and seal is only for <br />the structural engineering portions of the drawing pages bearing <br />Engineer's signature and seal. <br />L NAR <br />4600 W. Cypress St, Suite 200 1 Tampa, FL 33607 <br />www.LennarTampa.com <br />0z <br />uJ o <br />za <br />f <br />Z> <br />w ZQ�0 <br />UZ80 <br />z W Q QI <br />=5ZZ <br />�O�w <br />J <br />a Lu <br />K LL N <br />W <br />F <br />L <br />Z z <br />} <br />�>/ <br />z z <br />0 <br />n3 <br />-0Q <br />z <br />0 <br />�w <br />U <br />= <br />_I <br />0 <br />0H¢0Q <br />0m <br />uO6 <br />Q <br />0 <br />2�o�J <br />11 <br />TI <br />Z wza <br />L <br />Q Q W <br />f <br />80�2 <br />z <br />Z <br />UJCYR� <br />¢wLL:) <br />J <br />� <br />C <br />G <br />NrWOv <br />g YhQ <br />N <br />z <br />a<o <br />z <br />Zo <br />m <br />MM <br />W <br />Z <br />� <br />Z <br />0 <br />4 f <br />rn <br />r-1 <br />t1 <br />U 0 <br />o <br />SCALE : AS NOTED <br />DATE : 3/15/2018 <br />TECH: MJAMES <br />VERSION NO' 4nO <br />SHEET NO. <br />5.0 <br />