This section is from the book "Building Construction And Superintendence", by F. E. Kidder. Also available from Amazon: Building Construction And Superintendence.
Total load, 123 pounds per square inch.
Size of Joists. | Dist. on Centres. | White Pine. | Spruce or Norway Pine. | Oregon or Texas Pine. | Georgia Pine. | ||||
Ins. | Ft. | Ins. | Ft. | Ins. | Ft. | Ins. | Ft. | Ins. | |
3x8 | 12 | 11 | 7 | 12 | 7 | 13 | 0 | 14 | 0 |
3x8 | 16 | 10 | 8 | 11 | 4 | 11 | 9 | 12 | 8 |
2x10 | 12 | 12 | 10 | 13 | 9 | 14 | 2 | 15 | 2 |
2x10 | 16 | 11 | 7 | 12 | 6 | 12 | 10 | 13 | 10 |
3x10 | 12 | 14 | 8 | 15 | 8 | 16 | 2 | 17 | 5 |
3x10 | 16 | 13 | 4 | 14 | 3 | 14 | 9 | 15 | 10 |
2x12 | 12 | 15 | 4 | 16 | 6 | 17 | 0 | 18 | 3 |
2x12 | 16 | 14 | 0 | 15 | 0 | 15 | 5 | 16 | 7 |
Total load, 126 pounds per square foot. | |||||||||
3x12 | 12 | 17 | 6 | 18 | 8 | 19 | 3 | 20 | 9 |
3x12 | 16 | 15 | 10 | 17 | 0 | 17 | 7 | 18 | 11 |
2x14 | 12 | 17 | 10 | 19 | 1 | 19 | 8 | 21 | 2 |
2x14 | 16 | 16 | 2 | 17 | 4 | 17 | 11 | 19 | 3 |
2½X14 | 12 | 19 | 3 | 20 | 6 | 21 | 2 | 22 | 9 |
2½XI4 | 16 | 17 | 6 | 18 | 8 | 19 | 3 | 20 | 9 |
3x14 | 12 | 20 | 5 | 21 | 9 | 22 | 6 | 24 | 3 |
3x14 | 16 | 18 | 7 | 19 | 10 | 20 | 6 | 22 | 1 |
 
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