California Code of Regulations
Title 8 - Industrial Relations
Division 1 - Department of Industrial Relations
Chapter 4 - Division of Industrial Safety
Subchapter 4 - Construction Safety Orders
Appendix B - Handy Construction Data; Facts; and Information
Plate B-31-b - Holding Power of Bolts
Universal Citation: 8 CA Code of Regs Plate B-31-b
Current through Register 2024 Notice Reg. No. 38, September 20, 2024
Loads Perpendicular to Grain (q)
| Length of bolt in main |
Diameter of bolt (inches) |
||||||
| member1 (inches) | 1/2 | 5/8 | 3/4 | 7/8 | 1 | 1 5/8 | 1 1/4 |
| 1 5/8 .......................... | 430 | 490 | 540 | 600 | 660 | ||
| 2 5/8 .......................... | 700 | 790 | 880 | 970 | 1,050 | ||
| 3 5/8 .......................... | 920 | 1,090 | 1,210 | 1,340 | 1,460 | ||
| 4 1/2 .......................... | 920 | 1,300 | 1,510 | 1,660 | 1,810 | 1,970 | |
| 5 1/2 .......................... | - | 1,800 | 1,750 | 2,020 | 2,210 | 2,410 | |
| 6 1/2 .......................... | - | 1,250 | 1,750 | 2,260 | 2,590 | 2,860 | |
| 7 1/2 .......................... | - | 1,170 | 1,890 | 2,250 | 2,820 | 3,250 | |
| 9 1/2 .......................... | - | - | 1,520 | 2,120 | 2,760 | 3,450 | 4,130 |
| 11 1/2 .......................... | - | - | - | - | 2,570 | 3,200 | 4,040 |
1 This assumes dressed size lumber. Safe loads for other lengths of bolt in main member may be obtained by interpolation.
1. Renumbering and amendment of Plates B-29, B-29-a and B-29-b to Plates B-31, B-31-a and B-31-b filed 7-24-87; operative 8-23-87 (Register 87, No. 33).
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