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How much of a 2:1 do we need behind a beam guard post

Question
State WI
Description Text

There is a project that may have to install beam guard near a body of water.  The are asking how far down the slope do they need to carry the 2:1?

 

I know that the attached drawing show 2.5:1.

Keywords
  • Guardrail
Other Keywords grading
Date November 1, 2012
Attachment Pages from guardrail-options (2).pdf


Response
Response We would recommend that a minimum of 4 ft of the 2:1 slope be maintained prior to switching to a steeper slope. This length should provide sufficient soil at the 2:1 slope to resist post rotation in a manner similar to the continuous 2:1 slope that was tested. 
Date November 1, 2012


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