Serrated Steel Grating 1

[GFMJr]

Can anyone please advise the minimum standard serration notching that would be required to hold a 300 lb. person with the grating angled from 9 up to 15 degrees? Gratings designations needed are W-19-4, W-26-4 and W-25-4 with bearing bar thicknesses of 1/8" & 3/16" as well as minimum standard cross bar sizes. Thank you very much.

 

[NDGuy]

In general, you need a grating thatn is 1/4" deeper than plain tread grating to carry the equal loads. For your case, I would think a 15 degree slope is close enough to a horizontal plane to use manufactueres load tables, and then pick the next deeper section to account for teh serrations.

 

[GFMJr]

Thank you very much NDGuy for your response. This will definitely be easier for us to approach now.