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-30-a - Safe Lateral Strength and Required Penetration of Common Wire Nails

Universal Citation: 8 CA Code of Regs Plate B-30-a

Current through Register 2024 Notice Reg. No. 38, September 20, 2024

Driven Perpendicular to Grain of the Wood

							*Loads (pounds)*
*Size of nail*	*Standard length (inches)*		*Wire gauge*		*Penetration required (inches)*		*Douglas fir or southern pine*	*Redwood*	*Other species*
6d ..........................		2		11 1/2		1	70	58	As
8d ..........................		2 1/2		10 1/4		1 1/4	100	82	determined
10d ..........................		3		9		1 1/2	120	98	by the
12d ..........................		3 1/4		9		1 5/8	130	106	enforcing
16d ..........................		3 1/2		8		1 5/8	160	123	agency
20d ..........................		4		6		2	190	155
30d ..........................		4 1/2		5		2 1/4	230	188
40d ..........................		5		4		2 1/2	270	220
50d ..........................		5 1/2		3		2 3/4	310	250
60d ..........................		6		2		3	360	295

(2) Safe Resistance to Withdrawal. A wire nail driven perpendicular to grain of the wood shall not be subjected to a greater load, tending to cause withdrawal, than the safe resistance of the nail to withdrawal, as set forth in Plate B-30-b.

Nails driven parallel to grain of the wood shall not be allowed for resisting withdrawal forces.

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