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ATTIC VENTILATION CALCULATIONS - Al General Notes ATTIC VENTILATION REQUIRED UPPER VENTILATION PROVIDED ROOF CRITERIA: 1 0 12" OVERHANG U.N.O. 1/150 Rule 1/300 Rule Ridae Off -Ridge 0 PLUMB CUT FASCIA ROOF (No Upper Ventilators (Must Provide Upper Ventilators) Vent �mt Amt. 0 PITCH PER ELEVATION Req.) (Ft.) Total **G.C. VERIFY ROOF PITCH" Ventilation ROOF PITCH VARIES PER SUBDIVISIONS IT IS THE ATTIC Provided CONTRACTORS RESPONSIBILITY TO VERIFY SPACE SQ. FT� Total SQ. SQ. FT. SQ. IN. of by Upper SQ. IN. of of vented IN. of of ventilation to SQ. IN. of SQ. IN of Ventilators ROOF SLOPE REQUIREMENTS WITH TRUSS ventilation soffit ventilation vented be provided Ventilation Ventilation (See Elev) MANUFACTURER. required needed required soffit by upper needed ventilators "ELECTRICAL SPECIFICATION NOTES" ELECTRICAL CONTRACTOR MUST VERIFY WITH THE SPECIFICATIONS FOR THE TYPE OF FIXTURE Main 4.000000 2.000000 TO BE USED. LIGHT FIXTURES SHOWN ARE FOR Floor 1080 1037 148 518 37 259 336.0 (Zone 1) 60.0 276.0 LOCATION PURPOSES. Main 0.0 0.000000 Exterior Covering Floor 16 15 2 8 1 4 0.0 R703.7 Exterior plaster. (Zone 2) 0.0 - 0.0 Installation of these materials shall be in compliance with ASTM C Upper 16.000000 0.000000 926 and ASTM C 1063. Floor 1166 1 11�1 160 560 40 280 240.0 (Zone 3) 240.0 0.0 R703.7.1 Lath. — All Lath and lath attachments shall be of corrosion -resistant 6" "NOTE- materials. Attached per ASTM C 1063. GENERAL CONTRACTOR MUST ENSURE THAT PROPER VENTILATION IS PROVIDED AT EAVES/SOFFITS AS REQUIRED BY FBC 6th ED. RESIDENTIAL. R703.7.2 Plaster. Plastering w/ portiand cement plaster shall be not less than three coats when applied over metal lath or wire lath and shall be not less than two coats when applied over masonry, concrete. ....................... ............... ............................................ .................. R703.7.3 Water-Resisitive Barriers. Water-resisitive barriers shall be installed where cement plaster -based sheathing, shall include (stucco) is to be applied over wood a water -resistive vapor -permeable barrier. The individual layers shall be installed independently such that each layer provides a separate continuous plane and any flashing intended to drain to the water -resistive barrier is directed between the layers. The barriers shall consist of one of the following. 1. Two layers of an approved water resistant barrier material in accordance with R703.2. RD 2. One layer of an approved water -resistive barrier (paperbacked 0. stucco lath) over an approved synthetic house wrap. 0 _J t A co R703.4 Flashing. C14 Approved corrosion -resistant flashing shall be applied to. shingle -fashion in a manner to prevent entry of water into the wall cavity or penetration of water to the building structural framing components. Flashing shall be installed at the following locations. Exterior window/door openings. 0 0 Intersection of chimneys or other masonry contructions with ulk frame walls. , ................................... 0 0- ... ..................................... 2 Under and at the ends of masonry, wood or metal copings 0 and sills. Continuously above all projecting wood trim. N RIDGE ..... Where exterior porches, decks or stairs attach to a wall or LO floor assembly of wood -frame construction. 12'-O'RIDGE VENT 0 At wall and roof intersections 0 At Built-in gutters. 1&0 Attic Ventilation :3 4'-O'ROOF VENT Attic Ventilation to be in compliance with the Florida Building Code 6th Edition z (2017) Residential R806. Lu The Minimum net free ventilating area shall be 1/150 of the area of the vented FAI[OM . ..... jfi� space. The ventilating area may be reduced to 11300 provided that at least 40% TJ:12 SLOPE 0 4'-O'RIDGE VENT a Fr but no more than 50% of the required ventilation is provided in the upper portion of the space to be ventlated.Upper venfilators shall be located no more than 3 feet (measured vertically) below the ridge or highest point of the space, with the balance of the required ventilation provided by eave or comice, vents. -CALCULATIONS BASED ON THE FOLLOWING VALUES, SEE ROOF PLAN** W-O' R, (Values to be verified with Manufacturer Specifications) RIDGE VENTS 15 SO. IN. OF NET FREE AREA / LINEAR FT. a OFF -RIDGE VENTS 138 SQ. IN. OF NET FREE AREA / UNIT a SOFFIT VENTS 7 SQ. IN. OF NET FREE AREA / SQ. FT. ... 5:12 SL04 Ir -7 a O'HAGIN WEATHERMASTER (Shingle Roo� - 72 SQ. IN. OF NET FREE AREA/ FT. ** (Sq. Ft. Soffit Needed) x 7 - (Sq. In. Needed) / 72 = Amount of O'Hagin Vents Needed a LOMANCO DECK -AIR (Shingle Roofi - 9 SQ. IN. OF NET FREE AREA / FT. "Formula: (Sq. Ft Soffit Needed) x 7 m (Sq. In. Needed) / 9 - (Linear Ft. of Deck -Air Needed) a O'HAGIN (Tile Roof) - 86.25 SO. IN. OF NET FREE AREA / VENT "Formula: (Sq. Ft. Soffit Needed) x 7 - (Sq. In. Needed) f 86.25 - Amount of O'Hagin Vents Needed Lu L. _J 0. . . . . . . . . . . . 0 .................. : : ......................... ........... ..... C14 W a. 0 . . . 04 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . .. . ... . . . . . . . . a . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ROOF PLAN SCALE: Y4"=1'-0'1 I V) (D a) C—/) LU U 121% L.L.1 F- 0 E ca LU 0 = LL LO 0 N C-B D. % Al I I \41__ IV RID.1 Z_- Q� 0) el, z o' LLM A R.. - 0 cj Z, TKI z 00 To the best of the Engineer's knowledge, Information, and belief, the structural plans and specifications contained within these drawings comply with the 2017 Florida Building Code - Residential 6th Edition. Engineer's signatu re and seal is only for the structural engineering portions of the drawing pages bearing Engineer's signature and seal. 0 C:) Z r*4 0 (L) N 1-� ;kJ C) V) :3 ko > J.) rn Q M CD M Ln < CL (v 0 Ln < L- M F- efy-)` CL 00 < z z E z M WLij C) F- _J C:) z Z LO, 0 UJ Ch 00 00 r%1.J z R z Lr) 0 U fu CL 99 . U_ r- R 6 0 Jgg 0 f-4 cr_ uJ oc < a ce z 2 z LLJ Ln d;g _J -4 Lij ICE 08 < fn z C) Z t- r-J Z U z M ob :5 UJ �@ z 0 Lu rn V__I 0- 1 Ul) �21.: SCALE AS NOTED DATE 1/4/2018 TECH: ERAND VERSION No' 10 SHEET NO. 5.0