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Mixed Roofing Questions 4

Slope Ratio Span of Roof Run of Rafter Number of Units of Run Unit of Rise Unit of Line Length Line Length of Rafter Overhang Projection Line Length of Overhang Total rise of Roof
A 1:3 32’-0” 2’-0”
B 1:2.4 26’-0” 1’-6”
C 1:1.71 24’-0” 1’-0”
D 1:2 30’-0” 2’-0”
E 1:4 28’-0” 1’-4”
F 1:1.5 26’-0” 1’-0”
G 1:3 24’-0” 1’-4”
H 1:1.33 28’-0” 1’-6”
I 1:2.4 30’-0” 2’-0”

 

Slope Roof Span Run of Common Rafter Units Run ULL Rafter Line Length Overhang Projection Line Length of Overhang Total Rise of Roof
A 4/12 28’-0” 24”
B 9/12 22’-6” 16”
C 1:2 19’-3” 12”
D 1.5:1 31’-0” 8”

 

Slope Run Line Length of Gable Stud
1:2.4 4’-0”
1:2 12’-0”
1:1.71 7’-6”
1:1.33 12’-6”
1:3 14’-0”
1:4 9’-0”
1:1.5 10’-6”
Slope O.C. Spacings Difference in length Gable
1:2.4 16”
1:2 24”
1:1.71 12”
1:1.3 16”
1:3 24”
1:4 12”
1:1.5 16”
Slope Span (mm) Run Number of Units of Run Unit of Rise Unit of Line Length Line Length of Rafter Overhang Projection Line Length of Overhang Total Rise of Roof
A 1:2.5 10 000 600
B 1:3.33 7200 600
C 1:1.67 8500 300
D 1:2 9600 300
E 1:1.43 5200 400
F 1:3.33 2840 400
G 1:4 9750 600
H 1:1.25 8660 600
I 1:1 7780 400

 

Slope Span Run Units of Run Unit of Rise Unit of Line Length Line length of Hip Rafter Overhang Projection Line Length of Overhang
A 1:4 30’-0” 24”
B 1:2.4 24’-0” 16”
C 1:3 26’-0” 24”
D 1:2 30’-0” 18”
E 1:1.71 28’-0” 12”
F 1:5 24’-0” 16”
G 1:4 22’-0” 6”
H 1:3 18’-0” 16”
I 1:2.4 21’-0” 14”

 

SI Slope Span Run Number of Units of Run Unit of Rise Unit of Line Length Line length of Hip Rafter Overhang Projection Line Length of Overhang
A 1:2.5 10000 600
B 1:3.33 7200 600
C 1:1.67 8500 300
D 1:2 4800 300
E 1:1.43 2600 400
F 1:1.33 2840 400
G 1:4 9750 600
H 1:1.25 4330 600
I 1:1 7780 400

 

 

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Carpentry Refresher Program Manual Copyright © by Saskatchewan Indian Institute of Technologies-Trades and Industrial is licensed under a Creative Commons Attribution 4.0 International License, except where otherwise noted.

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