Ohio Admin. Code 4123:1-5-99 - Table of standard materials and dimensions

Where required specified by Chapter 4123:1-5 of the Administrative Code, the following table to this rule shall will be used.

Table of standard materials and dimensions*

Material	Distance of opening from hazard zone	Maximum width of opening allowable	Minimum gauge (U.S. Standard) or thickness	Minimum height of guard from floor or platform level
	Inches	Inches		Feet
Woven wire	Under 4	*see table below	No. 16	7
	4-15		No. 12	7
Expanded metal	Under 4	* see table below	No. 18	7
			No. 13
Perforated metal	Under 4	* see table below	No. 20	7
	4-15		No. 14	7
Sheet metal	Under 4	* see table below	No. 22	7
	4-15		No. 22	7
Wood or metal strip not crossed	Under 4	* see table below	Wood 3/4 Metal No. 16
	4-15		Wood 3/4 Metal No. 16	7
Standard guard railing*	Minimum 15	-	-	-
	Maximum 20

Distance of opening from hazard zone (inches)
0.5 to 1.5	0.25
Over 1.5 to 2.5	0.375
Over 2.5 to 3.5	0.5
Over 3.5 to 5.5	0.625
Over 5.5 to 6.5	0.75
Over 6.5 to 7.5	0.875
Over 7.5 to 12.5	1.25
Over 12.5 to 15.5	1.5
Over 15.5 to 17.5	1.875
Over 17.5 to 31.5	2.125

Notes

Ohio Admin. Code 4123:1-5-99

Effective: 9/1/2023
Five Year Review (FYR) Dates: 11/1/2026
Promulgated Under: 119.03
Statutory Authority: 4121.12, 4121.121, 4121.13
Rule Amplifies: 4121.47
Prior Effective Dates: 01/01/1986, 04/10/2011, 06/01/2016