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a <br />it <br />d <br />-0 <br />V <br />S <br />rn <br />O <br />O <br />J <br />CO <br />lii <br />C <br />Q <br />DD <br />N <br />lZ <br />00 <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 />A <br />Vent mt <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 />b Upper <br />y pp <br />SQ, IN. of <br />of vented <br />IN. of <br />of <br />ventilation to <br />SQIN. of <br />SQ. IN. of <br />Ventilators <br />ventilation <br />soffit <br />ventilation <br />vented <br />be provided <br />. <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 -Resistive Barriers. <br />Water -resistive 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 (paper <br />backed 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 constructions 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 />Z co <br />—o <br />zN <br />z� <br />a <br />U) z <br />V)' (D <br />�^ <br />w <br />�V — <br />O"' <br />Lu <br />to <br />/) ( <br />0 <br />U <br />o o <br />CO CV <br />F- E <br />a m c-) <br />— U <br />Q <br />(6 -0 co <br />OO O c� <br />I--U_ 00 <br />0 <br />0 <br />in <br />a[ rn <br />Q o <br />U.) a 7;ir, <br />rn Q o <br />B D® <br />NN YC <br />r <br />N <br />S o 10 <br />4 <br />° <br />Z W MNa�oZ w <br />U) <br />u5 <br />W Q LLo <br />W V ¢ <br />Z N o a p o <br />(O O r` � <br />EM�U <br />2 <br />� E ' � <br />um <br />N`FZf�'`/�/ <br />.tea` W.Ft)SENI`.i.C6M <br />i `-J <br />FV <br />•, <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 R <br />4600 W. Cypress St, Suite 200 1 Tampa, FL 33607 <br />www.LennarTampa.com <br />0z <br />0 <br />�o <br />za <br />Qg <br />gF <br />w¢�= <br />ZOO <br />Z W Z Z <br />Z <br />Z <br />Lu <br />�a�J <br />00 <br />OV W w N <br />L <br />O L <br />z0 <br />}u <br />> <br />E <br />OZ <br />O <br />u <br />J <br />= <br />J <br />T <br />� <br />gg . <br />z <br />��0 <br />1 <br />r ' <br />" <br />p <br />f J� <br />Lr) <br />O <br />UO�Ii <br />r a a <br />fV <br />o- <br />wwa <br />ohs <br />Z <br />Z <br />+-� <br />ea�rz <br />W <br />In <br />a " <br />8 <br />J <br />■--1 <br />LLl <br />CC <br />F � V <br />a <br />O <br />G <br />Q <br />Q <br />Z <br />� G Z <br />�_ <br />Rz <br />m <br />O <br />06 <br />�� <br />Q <br />= <br />RJza <br />rn <br />,—1 <br />a <br />cn <br />o <br />SCALE : AS NOTED <br />DATE : 7/31 /2018 <br />TECH: MJAMES <br />VERSION No' �J^ . O <br />SHEET NO. <br />5.0 <br />