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

Where required by Chapter 4123:1-5 of the Administrative Code, the following table to this rule shall 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 7
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 7
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 0.3725
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

Effective: 04/10/2011
R.C. 119.032 review dates: 03/03/2010 and 03/01/2016
Promulgated Under: 119.03
Statutory Authority: 4121.12 , 4121.121 , 4121.13
Rule Amplifies: 4121.47
Prior Effective Dates: 1/1/86