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/Calderwood/Calderwood - 2021-04-14Norton Ranch Homes:Roof PlanCalderwood Phone: 541-728-0378www.Nortonranchhomes.comArea Calculations:
1st Floor 759
2nd Floor 657
Total Conditioned 1,416 sq. ft.
Porch 1 15
Porch 2 40
Patio 165
Storage 40
1
A8.1
3
A8.1
1
A3.1
3
A3.1
2
A8.1
4
A8.1
1
A4.1
1
A4.1
1'-0"1'-6"Typ. Barge8/12
SLOPE
8/12
SLOPE8/12SLOPE8/12SLOPE3/12
SLOPE
8/12
SLOPE
8/12
SLOPE
8/12
SLOPE
8/12
SLOPE
8/12
SLOPE
RIDGERIDGERIDGERIDGERIDGE
d.s.d.s.
d.s.
d.s.
d.s.d.s.
d.s.
d.s.
d.s.
d.s.
4
A3.1
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: 800 SQ. FT.
REQUIRED VENTILATION (1:150): 5.33 SQ. FT.
EAVES: 79 LF
RIDGES: 47 LF
LEVEL WALLS: 13 LF
TOTAL: 139 LF
VENTILATION = .277 SQ. FT. per L/F (COR-A-VENT OR SIMILAR)
139 X .277 = 38.5 SQ. FT. ACTUAL VENTILATION