Laserfiche WebLink
ATTIC VENTILATION CALCULATIONS - 131 (TRB <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 SO. <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 />required soffit <br />ventilation <br />vented <br />soffit <br />be provided <br />by upper <br />Ventilation <br />Ventilation <br />(See Elev ) <br />needed <br />required <br />needed <br />ventilators <br />Main <br />21.00000 <br />2.000000 <br />Floor <br />2377 <br />2282 <br />326 <br />1141 <br />81 <br />570 <br />0 <br />591.0 <br />315.0 <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 — ELEV—Bl <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 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 SO. IN. OF NET FREE AREA / LINEAR FT. <br />• OFF -RIDGE VENTS 138 SO. IN. OF NET FREE AREA / UNIT <br />• SOFFIT VENTS 7 SQ. IN. OF NET FREE AREA / SQ. FT. <br />Coastal Flashings <br />All flashing material for coastal locations (ex: within 3,000 feet of the <br />ocean) shall be corrosion resistant material (ex: zinc and/or stainless <br />steel) and shall be selected for compatibility with adjacent wood <br />preservatives per the manufacturer's recommendations. <br />i <br />ti6 d <br />� F <br />F I- • `� <br />*r <br />ti <br />*ell'­rart if f 11111W`��\\o <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 potions of the drawing pages bearing <br />Engineers signature and seal. <br />0 <br />I- $ E to r• <br />O O N fpN iR <br />U W <br />_ <br />ii N hC n'LL <br />7 N J iR W <br />0' �' <br />di CO n —0 LL J p. <br />u <br />Q 4r) W W <br />CL W <br />JLLLL <br />z ZO <br />N c O1 O X I— <br />Y � � C, <br />7 � N <br />W dam¢ <br />_ J a <br />d <br />0 <br />CV a (aj J <br />z ° 6 o00 <br />W <br />QD <br />z <br />Z n <br />J <br />- N <br />r ^ M <br />� <br />aXZ 0 <br />WW <br />Q A <br />U <br />O ,,, s <br />c /) cV) Y <br />U <br />'® w W <br />W <br />Q <br />o <br />M <br />=g <br />w <br />Z <br />J <br />LA. <br />H <br />wo <br />>Q <br />E O <br />WLL® <br />NO <br />ccU <br />X U <br />o a <br />UO <br />U <br />z <br />CDa= <br />CN t <br />o <br />ap <br />rZ <br />a <br />¢ <br />• @ <br />� C <br />�� <br />"m <br />mf <br />O <br />OLL <br />z <br />� <br />y <br />pw <br /><w <br />W <br />O Q <br />a U <br />J <br />o <br />w <br />�lo <br />w <br />_�< <br />OF <br />N <br />Co <br />O <br />M <br />f° <br />O <br />'� <br />Q <br />a <br />C <br />^, a U <br />I- <br />W N <br />�./ <br />70 W <br />o <br />O <br />■ � = C,4 <br />r <br />�± <br />N <br />T <br />O (0 <br />M <br />C0 <br />N y rn <br />o <br />Z <br />z <br />E O <br />E <br />a <br />0 � ¢ o <br />� <br />JOB <br />NO: 20-6582 <br />SCALE : AS NOTED <br />SHEET NO. <br />5 <br />