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Attic Ventilation ATTIC VENTILATION CALCULATIONS Attic Ventilation to be in compliance with the Florida Building Code 7th Edition ATTIC VENTILATION REQUIRED UPPER VENTILATION PROVIDED (2020) Residential R806. The Minimum net free ventilating area shall be 11150 of the area of the vented space. The ventilating area may be reduced to 1/300 provided that at least 40% 1/150 Rule Ridge 1/300 Rule Off -Ridge but no more than 50% of the required ventilation is provided in the upper portion of (No Upper Ventilators (Must Provide Upper Ventilators) Vent Amt Amt. the space to be ventilated. Upper ventilators shall be located no more than 3 feet Req.) (Ft.) (measured vertically) below the ridge or highest point of the space, with the - --- - -- - -- - -- Total balance of the required ventilation provided by eave or cornice vents. Ventilation "CALCULATIONS BASED ON THE FOLLOWING VALUES, SEE ROOF PLAN" ATTIC Provided (Values to be verified with Manufacturer Specifications) SPACE SQ. FT. Total SQ. SQ. FT. SQ. IN. of by Upper • OFF -RIDGE VENTS 138 SO. IN. OF NET FREE AREA / UNIT SQ. IN. of IN of vented IN. of . of SQ. IN. of of ventilation to SQ. Ventilators • SOFFIT VENTS 7 SQ. IN. OF NET FREE AREA / SO. FT. ventilation vented be provided (See Elev) • STUCCO SOFFIT VENTS - 126 SO. IN. OF NET FREE AREA / SO. FT. required soffit ventilation soffit by upper Ventilation Ventilation "If not enough vented soffit is provided due to fire protection, the contractor shall use the needed required needed ventilators following approved vents: • LOMANCO DECK -AIR (Shingle Roof) - 9 SQ. IN. OF NET FREE AREA / FT. "Formula: (Sq. Ft. Soffit Needed) x 7 = (Sq. In. Needed) 19 = Linear Ft. of Deck -Air Needed) -- - Main 0.0 2.0 Floor 1070 1027 147 514 37 257 - 276.0 (Zone 1) 0.0 276.0 Main 0.0 2.0 Floor 992 952 136 476 34 238 276.0 (Zone 2) 0.0 276.0 -NOTE" GENERAL CONTRACTOR MUST ENSURE THAT PROPER VENTILATION IS PROVIDED AT EAVES/SOFFITS AS 2 REQUIRED BY FLORIDA BUILDING CODE 7TH EDITION (2020) RESIDENTIAL. 2 2 2 FP-1 FP-1 FP-1 FP-1 2 1 1 1 1 1 1 1 1 FP-1 1 FP-1 FP-1 FP-1 FP-1 FP-1 FP-1 FP-1 FP-1 1 FP-1 FP-1 I I ZONE-2 ZONE-2 ZONE-2 ZONE-2 1 a1 o wATTIC SPACE ATTIC SPACE ATTIC SPACE ATTIC SPACE I � 1 n rn 1 992 SQ. FT. FP 1 996 SQ. FT. 997 SQ. FT. 994 SQ. FT. I I I I i I 3 0I 1 3 FP-1 3 3 1 1 ti� FP-1 $ � a FP-1 � FP-1 _FQ 1 O 1 rn "' n U i,j is � •c 00, I I I I I ZONE-1 FIRE RETARDANT PLYWOOD FIRE RETARDANT PLYWOOD FIRE RETARDANT PLYWOOD FIRE RETARDANT PLYWOOD ZONE-1 1 LOCATION. LOCATION. LOCATION, LOCATION, 1 I ATTIC SPACE DO NOT BREACH00 DO NOT BREACH DO NOT BREACH DO NOT BREACH ATTIC SPACE 1 1 1072 S . FT. 1070 SQ. FT. 1 I Q I 4'-0" ROOF VENT 4'-0" ROOF VENT 4'-0" ROOF VENT 4'-0" ROOF VENT 4'-0" ROOF VENT 4'-0" ROOF VENT 4'-0" ROOF VENT 4'-0" ROOF VENT J 1 I$ r O O LU 1 6:12 SLOPE RIDGE 6:12 SLOPE g RIDGE RIDGE RIDGE —� N RIDGE RIDGE sf Q LU I I I I Q I I I I I 9 1 1 9 1 1 1Cr I I 1 1 I i I I I I I I 1 1 I I I I i I I I 1 I 6� •12 SLOPE 6:12 SLOPE 6 E 6:12 6:12 SLOPE 1 1 1 1 1 1 E- 6:12 SLOPE � 1 6:12� SL�PE 6:12 SLOPE 1 LU I � LU "-4 a w n n (n IJ cC tG cC or I w I w L I I I I I I I 1 1-4 ck; or 6,12 SLOPE 6:12 SLOPE 1 L� 1 FP-1 FP-1 ( �Q w LL, do 1 FP-1 FP-1 1 w o I 2 1 N N 1 2 1or 00I 1 6:12 SLOPE 1 I 1 16-12 SLOPE I FP-1 FP-1 FP-1 FP 1 FP-1 FP-1 2 \11FP-1 FP -1 FP-1 4'-0" 4'_0" 4'-0" 4'-0" 4' 0" 4'_0" 4'-O" 4'-0" 4' 0" 4'-0" UNIT 1500 UNIT 1397 UNIT 1397 UNIT 1397 UNIT 1397 ROOF PLAN SCALE: 3/8"=1'-O" 0 r' �z O ;Cr)N 5X 1L CL O u J Ri J r t J 5 (5 __ -- C: C n O O ` U = ¢ ^ LLJ Q > CL J ' .PVC N �iJt W J rGi r - 1. ,- �; :; 1 (l'J' •Y^ti. \�• CNN To the best of the Engineers knowledge, information and belief, the structural plans and specifications contained within these drawings comply with the 2020 Florida Building Code - Residential 7th Edition. Engineers signature and seal is only for the structural engineering portions of the drawing pages bearing Engineer's signature and seal. 9) E O N V N 00 0 00 Co Q1 fh V M V C J LL W w a $ 90 W_�O'Q m w IL M Z Q J N J O U U = '0 W El 13 z Q /t� ''^^ N (1L), V V � 0 c �fn ZD U ' w r-- E I V® see r_ Cl) 4 J O a� � E U0 Z c�v It7 0 4 �z fC wz wg �� ms C - Y X m0 2 z di N J �b Fp a w � z 2 �O WC a O LL �w W W � �5 a 05 _g 0 �N 0 .y ICU a) g a; co 0 _e) a OD 00 vJ O T m Q 04 c M 04 0 LO Cfl 00 E m z � T— E z a. E 1 U °� ¢ p JOB NO: 22-05620-05615 SCALE : AS NOTED SHEET NO. 10.1