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I o I ro i I I ZONE-1 I 3'-0" ATTIC SPACE o � I 5:12 SLOP 2377 SQ. FT. I r I o uj J o Li 5:12 SLOPE, r I RIDGE 7'-0' RIDGE VENT r z �— W Ill 0 Q _j �� 9� 0 :12SLOPE O � 14'-0' RIDGE VENT z RIDGE r-----------� LU LL 0 I I I I 5:12 SLOPE Ia w r I I I I ti,A I I I I I - ------------------------------------------------------ 0 I I I I ROOF PLAN - ELEV-Bl_ SCALE: %4"=1'-0" ATTIC VENTILATION CALCULATIONS - B1 (TRB) 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 may be reduced to 1/300 provided that at least 40% (No Upper Ventilators (Must Provide Upper Ventilators) Vent Amt Amt. but no more than 50°I° of the required ventilation is provided in the upper portion of Req.) (Ft.) the space to be ventilated. Upper ventilators 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 cave or cornice vents. ATTIC SQ. FT. SQ. IN. of Provided by Upper **CALCULATIONS BASED ON THE FOLLOWING VALUES, SEE ROOF PLAN** SPACE SQ. IN. of SQ. FT. Total SO. of ventilation to Ventilators (Values to be verified with Manufacturer Specifications) of vented IN. of SQ. IN. of SQ. IN. of •OFF -RIDGE VENTS - 138 SO. IN. OF NET FREE AREA /UNIT ventilation soffit ventilation vented be provided Ventilation Ventilation See Elev ( ) SOFFIT VENTS - 7 SO. IN. OF NET FREE AREA / SO. FT. required needed required soffit by upper •STUCCO SOFFIT VENTS - 126 SO. IN. OF NET FREE AREA / SO. 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 S0. IN. OF NET FREE AREA / FT. **Formula: (Sq. Ft. Soffit Needed) x 7 = (Sq. In. Needed) / 9 = Linear Ft. of Deck -Air Needed) Main 21 2 Floor 2377 2282 326 1141 81 570 591.0 315.0 276.0 (Zone 1) '*NOTE*' GENERAL CONTRACTOR MUST ENSURE THAT PROPER VENTILATION IS PROVIDED AT EAVES/SOFFITS AS REQUIRED BY FLORIDA BUILDING CODE 7TH EDITION (2020) RESIDENTIAL.OT RM c 0 •5 J LZ i aw E1ft4l� 1 �. 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