California Code of Regulations
Title 8 - Industrial Relations
Division 1 - Department of Industrial Relations
Chapter 4 - Division of Industrial Safety
Subchapter 7 - General Industry Safety Orders
Group 6 - Power Transmission Equipment, Prime Movers, Machines and Machine Parts
Article 37 - Purpose, Definitions and Standards
Table G-1 - Guard Materials

Universal Citation: 8 CA Code of Regs G-1

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

Material	A Clearance from moving part at all points	B Largest mesh or opening allowable	C Minmum gauge (U.S. Standard) or thickness

	(See Fig. G-2)	(See Fig. G-1)

	Inches	Inches	Gauge/Inches
Woven wire ..........................	Under 2 ..........................	3/8..........................	No. 16
	2-4..........................	1/2..........................	No. 16
	4-15..........................	2..........................	No. 12
Expanded metal ..........................	Under 4..........................	1/2 ..........................	No. 18
	4-15..........................	2..........................	No. 13
Perforated metal ..........................	Under 4..........................	1/2..........................	No. 20
	4-15..........................	2..........................	No. 14
Sheet metal ..........................	Under 4..........................	..........................	No. 22
	4-15..........................	..........................	No. 22
Plastic ..........................	Under 4..........................	1/2..........................	*
	4-15..........................	2..........................	*
Plywood or equivalent ..........................	Under 4..........................	..........................	5/16
Plywood or equivalent ..........................	4-15..........................	..........................	5/16
Solid wood ..........................	Under 4..........................	..........................	1
Solid wood ..........................	4-15..........................	..........................	1
Wood or metal strip crossed ..........................	Under 4..........................	3/8..........................	Metal No. 16 Wood 3/4
	4-15..........................	2..........................	Metal No. 16 Wood 3/4
Wood or metal strip crossed ..........................	Under 4..........................	1/2..........................	Metal No. 16 Wood 3/4
	4-15..........................	1..........................	Metal No. 16 Wood 3/4
Standard rail ..........................	Min. 15..........................	..........................	..........
	Max. 20..........................	..........................	..........
Other materials that meet the strength requirements of this table and provide equivalent protection may be used.
* Tensile strength of 10,000 lb/in2

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