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I co I 11 I ZONE-1 0 _N 3'-° ATTIC SPACE u") I o I 2373 SQ. FT' I I RIDGE I I I W I d I I O I O znj to I "' I RIDGE 15'-0' RIDGE VENT LU �Q d a :12 SLOPE w > 14'-0' RIDGE VENT O Io RIDGE I I I I 5:12 SLOB I I uj I I I I I I I i CD 1 i I I I 1'-0' ROOF PLAN - ELEV-Al_ SCALE: 14"=1'-0" ATTIC VENTILATION CALCULATIONS - Al (TRA) Attic Ventilation ATTIC VENTILATION REQUIRED UPPER VENTILATION PROVIDED Attic Ventilation to be in compliance with the Florida Building Code 7th Edition (2020) Residential R806. The Minimum net free ventilating area shall be 1/150 of the area of the vented 1/150 Rule 1/300 Rule Ridge Off -Ridge space. The ventilating area maybe reduced to 11300 provided that at least 40% (No Upper Ventilators (Must Provide Upper Ventilators) Vent Amt Amt. but no more than 50% of the required ventilation is provided in the upper portion of Req,) (Ft.) the space to be ventilated.Upperventitators shall be located no more than 3 feet Total (measured vertically) below the ridge or highest point of the space, with the Ventilation balance of the required ventilation provided by eave or cornice vents. ATTIC SPACE SQ. FT. SQ. IN. of Provided by Upper **CALCULATIONS BASED ON THE FOLLOWING VALUES, SEE ROOF PLAN** SQ. IN. of SQ. FT. Total SQ. of ventilation to Ventilators (Values to be verified with Manufacturer Specifications) ventilation of vented IN, of vented be provided SQ. IN. of S0. IN. of (See Elev) OFF -RIDGE VENTS - 138 SQ. IN, OF NET FREE AREA /UNIT required soffit ventilation soffit by upper Ventilation Ventilation .SOFFIT VENTS - 7 SO. IN. OF NET FREE AREA / SQ. FT. needed required .STUCCO SOFFIT VENTS - 126 SO, IN. OF NET FREE AREA I SQ. FT. needed ventilators *If not enough vented soffit is provided due to fire protection, the contractor shall use the following approved vents: • LOMANCO DECK -AIR (Shingle Roof) - 9 SO. IN. OF NET FREE AREA / FT. "Fonnula: (Sq. Ft. Soffit Needed) x 7 = (Sq. In. Needed) / 9 = Linear Ft, of Deck -Air Needed) - Main 29 1 Floor 2373 2278 325 1139 81 570 573.0 435.0 138.0 (Zone 1) **NOTE** GENERAL CONTRACTOR MUST ENSURE THAT PROPER VENTILATION IS PROVIDED AT EAVESlSOFFITS AS REQUIRED BY FLORIDA BUILDING CODE 7TH EDITION (2020) RESIDENTIAL. N O N N N No PE78750 M w To the best of the Engineer's knowledge, information and belief, the structural plans and specifications contained within these drawings comply with the 2020 Florida Building Code - Residential 7th Edition. Engineer's signature and seal is only for the structural engineering po