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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. INof <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 />0.000000 <br />0,000000 <br />Floor <br />0 <br />0 <br />0 <br />0 <br />0 <br />0 <br />0.0 <br />0.0 <br />0.0 <br />(Zone 1) <br />Upper <br />9 <br />2.000000 <br />Floor <br />1535 <br />1474 <br />211 <br />737 <br />53 <br />368 <br />411.0 <br />276.0 <br />(Zone 2) <br />135.0 <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: Y4'=V-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 />• O'HAGIN WEATHERMASTER (Shingle Roof) - 72 SQ, IN. OF NET FREE AREA/ FT. <br />" (Sq. Ft. Soffit Needed) x 7 = (Sq. In. Needed) / 72 = Amount of O'Hagin Vents Needed <br />• LOMANCO DECK -AIR (Shingle Roof) - 9 SQ. IN. OF NET FREE AREA / FT. <br />**Formula: (Sq. Ft. Soffit Needed) x 7 = (Sq. In. Needed) / 9 = Linear Ft. of Deck -Air Needed) <br />• O'HAGIN (Tile Roof) - 86.25 SQ. IN, OF NET FREE AREA / VENT <br />-Formula: (Sq. Ft. Soffit Needed) x 7 = (Sq. In. Needed) / 86.25 = Amount of O'Hagin Vents Needed <br />u1 <br />CD <br />e o <br />N <br />Q <br />13 <br />Cl- <br />U) z <br />V) CD <br />Q) c_0 <br />w <br />O w <br />Lh <br />0 <br />t/) <br />o 0 <br />S.! <br />w <br />r— E <br />N M <br />Cn <br />mNco <br />N <br />U <br />C)_o <br />r LL � <br />Y f� <br /><mAl <br />�oc:) <br />�Qo <br />I <br />N�C�B�D�C <br />�a <br />• <br />ter/ th <br />O <br />LU • ' ul <br />.o L <br />rR <br />z <br />LL <br />�j f f , T <br />To the best of the Engineer's k o I &� ,information, and <br />belief, the structural plans and specifications contained <br />within these drawings comply with the 2017 Florida <br />Building Code - Residential 6th Edition. Engineer's <br />signature and seal is only for the structural engineering <br />portions of the drawing pages bearing Engineer's signature <br />and seal. <br />0 <br />0 <br />Z N <br />O N <br />I -I }' O <br />_ O <br />M <br />M <br />z <br />(0 Li) <br />a (n d' <br />(A ON <br />a L U <br />fl. ^ <br />� U C). <br />a <br />3: E" <br />(° <br />z � <br />LU <br />Jo <br />MJ <br />OZ <br />Ln <br />CO <br />Lu Q <br />za <br />f <br />r~ <br />w¢�[r <br />ZOO <br />Z�wtr <br />V Z Q <br />I—�ZZ <br />w <br />�2�w <br />VF <br />w <br />uJ <br />O <br />zZ <br />o <br />V <br />z Z <br />Z rGw <br />L <br />Z <br />- <br />K <br />Ln <br />(0 <br />Lr) <br />o <br />> <br />IN <br />¢ <br />o <br />a <br />U <br />(!) <br />J <br />0- <br />Lu <br />ow <br />Oz <br />I-LL�U�¢ <br />9 <br />xOU <br />O <br />Co <br />0 <br />N <br />ce < <br />QLLJ � jJ <br />Z <br />Q <br />~ <br />z <br />LU <br />N <br />o <br /><�2r. <br />J <br />ul <br />r-i <br />11.1 <br />2 <br />Q <br />Al0ZO <br />2�a <br />00 <br />M <br />Lfi <br />Q <br />Z <br />Z <br />awZ <br />a� <br />Oi <br />Z <br />_io <br />m <br />06 <br />� <br />=LIJ <br />171) <br />aw <br />,-� <br />a <br />V) <br />SCALE : AS NOTED <br />DATE : 1 /5/2018 <br />TECH: MJAMES <br />VERSION N0. 10 <br />SHEET NO. <br />5.0 <br />I <br />1. f <br />I <br />