Question: Suppose rock bolt load is 73.5kN and bolts are spaced on 1.5 m centers in a square pattern. Find the bolting pressure Pb. What layer

Suppose rock bolt load is 73.5kN and bolts are spaced on 1.5 m centers in a square pattern. Find the bolting “pressure” Pb. What layer thickness is this bolting pressure equivalent to assuming a single layer roof beam sagging under self-weight along with simply supported ends? Note: Specific weight of the roof layer is approximately 25.0kN/m3.

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