Cal. Code Regs. Tit. 8, div. 1, ch. 4, subch. 4, app B, Plate B-31-b

Current through Register 2024 Notice Reg. No. 44, November 1, 2024

Holding Power of Bolts

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.

Cal. Code Regs. Tit. 8, div. 1, ch. 4, subch. 4, app B, Plate B-31-b

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).