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HomeMy WebLinkAboutA1.2 Roof Plan 07-06-20211SHEET TITLE Designed by: SHEET 3 OF 11 A1.2 Built by: Ph: 541.550.9389 Em. openroaddesignco@gmail.com Web. myopenroaddesign.com PROJECT NO: DATE: DRAWN BY: COPYRIGHT: Jeff Warwick 05.04.2021 202022-CDW Open Road Design BIMcloud: openroaddesign - BIMcloud as a Service/Fallon Plans/Greenhorn/GreenhornNorton Ranch Homes:Roof PlanGreenhorn Phone: 541-728-0378www.Nortonranchhomes.comArea Calculations: 1st Floor 746 2nd Floor 660 Total Conditioned 1,406 sq. ft. Porch 304 Patio 17 Storage 54 3 A8.1 4 A8.1 1 A8.1 1 A7.1 5 A7.1 2 A7.1 3 A7.1 1 A3.1 4 A3.1 3 A3.1 2 A8.1 1 A4.1 1 A4.1 1'-0"o.h.1'-6"o.h.8/12 SLOPE 8/12 SLOPE 3/12 SLOPE 3/12SLOPE8/12SLOPE8/12SLOPE8/128/12 RidgeHipRidge D.S.D.S.D.S. D.S. D.S.D.S. D.S. D.S. D.S. 2 A3.1 SCALE: 1/4" = 1'-0"1 Roof 0 2'4'8' Roof Notes: 1) Roofs less than 4:12 slope to have self adhesive weather barrier, use "Ice & Water Shield" or equal 2) Roofs over 4:12 to have 30# felt or equal weather barrier 3) Roof sheathing to be specified and nailed per structural engineer 4) All wood exposed to the elements to be pre-primed on all faces. Return end grain w/ miters. 5) Flash all eaves w/ 26ga galvanized z-flashing w/ drip edge 6) Flash all barge rafters w/ 26ga galvanized flashing w/ drip edge 7) All valleys to be lined with additional layer weather barrier. Roofing to be flashed or lapped per manuf. recommendation at valleys. 8) All hips to have additional layer weather barrier. Use hip/ridge shingles or other flashing as specified per roofing manufacturer. 9) All roof/wall intersections to be interlaced with 26ga step flashing painted to match siding/roofing 10) All level wall to roof conditions to be vented and flashed with Cor-A-Vent roof2wall flashing or similar 11) All eaves to be ventilated w/ 1" continuous soffit vent w/ bug screens per IRC requirements 12) All ridges to be continuously ventilated w/ Cor-A-Vent Ridge Vent or similar. 13) All ridges to be capped with Hip/Ridge shingles to match roofing color and material 14) Conditions where roof may slope into walls at chimneys to be countersloped with crickets no less than 2:12 slope. Cap crickets with 26ga galv. sheet metal flashing painted to match roofing. ROOF VENTING CALCULATION VENTED ROOF DECK: 782 SQ. FT. REQUIRED VENTILATION (1:150): 5.21 SQ. FT. EAVES: 89 LF RIDGES: 50 LF LEVEL WALLS: 35 LF TOTAL: 139 LF VENTILATION = .277 SQ. FT. per L/F (COR-A-VENT OR SIMILAR) 174 X .277 = 48.2 SQ. FT. ACTUAL VENTILATION