Safety Grating

Safety Grating is a variation of safegrid grating designed to prevent a 15mm ball from passing through the gratings.  The 6mm twisted transverse bars are usually spaced at 100mm or 50mm centres and a 9mm round bar is welded to the underside to close the gap between the load bearing bars, preventing small objects such as nuts and bolts from passing through the grating.

Safety Grating was originally designed for the offshore industry to satisfy requirements for use in the petroleum activities of the Norwegian sector, however Safety Grating is now used in varying applications where open grid flooring is installed above an existing thoroughfare.

Mesh Sizes 

 Safety Grating

Safety Grating

Load Bearing Bar Centres (A)

Transverse Bar Centres (B)

Round Bar (9mm) centres (c)

Opening (D)

W (41mm) 50, 100 (mm) 41mm 14.5mm (max)*
E (33mm) 50, 100 (mm) 33mm 10.5mm (max)*
N (30mm) 50, 100 (mm) 30mm 9mm (max)*
*Dimensions based on 3mm bearing bars, for 5mm Bars the spacing is reduced by 1mm


Loading Criteria

The following flooring load tables are being updated to reflect the requirements of BS EN ISO 14122-2-2001+A1:2010 & BS4592-0:2006+A1:2012, which include a more onerous concentrated load. If you require assistance please contact Lionweld Kennedy Technical team on 01642 233297.


How to order

  1. Select the loading requirments from the above table.
  2. Determine your maximum clear span (open area between supports) and using our load tables select the required load bearing bar size.
  3. Select the required mesh size.
  4. Choose your surface type and finish


EXAMPLE 25x5 W 100 (41/100) Rolled Serrated Galvanized



Need help with Technical Specifications?

Click here to find more information. Alternatively, you can call 01642 233299 where an advisor would be happy to help.

 Safety Grate with Bearing


Plain Load Tables

Currently being updated, please contact our technical team on 01642 233297 for loadings.



Other information