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

Current through Register 2024 Notice Reg. No. 25, June 21, 2024

Holding Power of Bolts

Loads Parallel to Grain (p)

Length of bolt in main	Diameter of bolt (inches)
member1 (inches)	½	5/8	¾	7/8	1	1 5/8	1 ¼
1 5/8 ..........................	910	1,160	1,390	1,630	1,860
2 5/8 ..........................	1,150	1,700	2,190	2,610	3,010
3 3/8 ..........................	1,160	1,810	2,570	3,310	3,990
4 ½ ..........................	1,160	1,810	1,600	2,530	4,480	5,380
5 ½ ..........................	-	1,810	2,620	3,550	4,610	5,800
6 ½ ..........................	-	1,810	2,600	2,550	4,630	5,850
7 ½ ..........................	-	1,810	2,600	3,550	4,630	5,850
9 ½ ..........................	-	-	2,600	3,550	4,630	5,350	7,240
11 ½ ..........................	-	-	-	-	4,630	5,850	7,240

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-a