Question

In construction and in compliance with OSHA,

What is the actual surface width of a trench from spoil pile edge to spoil pile edge? Assume a spoil pile is placed on both sides of the trench. The depth of the trench is 10', workspace at the bottom of the trench is 5' wide, and the trench slope is 1h:1v.

Is it: 15' , 19' , 25' , 27' , or 29'

Answer 1

Given = Slope,S = 1:1

              Depth,d = 10'

              Bottom Width,b = 5'

              Surface Width, B = b + 2Sd

                                             = 5' + 2•1•10'

                                         B = 25'

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