Size Inches | Spacing Inches | Floor Joists Maximum Spans - In Feet | Ceiling Joists Maximum Spans - In Feet Finished Ceiling Below | ||
Finished Ceiling Below | No Finished Ceiling Below | Accessible Attic Above | Inaccessible Attic Above | ||
Size Inches | Spacing Inches | Floor Joists Maximum Spans - In Feet | Ceiling Joists Maximum Spans - In Feet Finished Ceiling Below | ||
Finished Ceiling Below | No Finished Ceiling Below | Accessible Attic Above | Inaccessible Attic Above | ||
2 x 6 | 12 | 9-0 | 10-6 | 12-0 | 15-0 |
16 | 8-6 | 9-0 | 10-0 | 14-0 | |
24 | 7-0 | 7-6 | 8-6 | 12-0 | |
2 x 8 | 12 | 12-0 | 14-0 | 14-6 | 20-0 |
16 | 11-4 | 12-0 | 13-0 | 18-0 | |
24 | 9-6 | 10-0 | 11-6 | 16-0 | |
2 x 10 | 12 | 15-0 | 17-6 | 18-0 | 24-0 |
16 | 14-0 | 15-0 | 16-6 | 22-0 | |
24 | 12-0 | 12-6 | 14-6 | 20-0 | |
2 x 12 | 12 | 18-6 | 21-0 | 21-6 | 28-0 |
16 | 16-6 | 18-0 | 20-0 | 27-0 | |
24 | 14-6 | 15-0 | 17-6 | 25-0 | |
2 x 14 | 12 | 21-6 | 24-0 | 25-0 | — |
16 | 19-6 | 21-0 | 23-0 | — | |
24 | 17-6 | 17-6 | 20-6 | — | |
3 x 6 | 12 | 10-0 | 13-0 | 12-6 | — |
16 | 9-6 | 11-6 | 11-6 | — | |
24 | 8-6 | 9-6 | 10-0 | — | |
3 x 8 | 12 | 14-0 | 17-0 | 16-6 | — |
16 | 12-9 | 15-0 | 15-0 | — | |
24 | 11-0 | 12-6 | 13-6 | — | |
3 x 10 | 12 | 17-6 | 21-6 | 23-0 | — |
16 | 16-0 | 19-0 | 19-0 | — | |
24 | 14-0 | 15-6 | 17-0 | — | |
3 x 12 | 12 | 21-0 | 26-0 | 25-0 | — |
16 | 19-6 | 22-6 | 21-6 | — | |
24 | 17-0 | 19-0 | 19-0 | — | |
3 x 14 | 12 | 24-6 | 28-0 | 26-0 | — |
16 | 22-6 | 26-0 | 23-0 | — | |
24 | 20-0 | 22-0 | 21-6 | — | |
(Prior Code, § 9-124) (Ord. 94-11B, passed 4-21-1994)