Question: A bridge abutment for a two - lane road will be supported on steel H - piles driven to bedrock. The soil and rock Clay

A bridge abutment for a two-lane road will be supported on steel H-piles driven to bedrock. The soil and rock Clay conditions are as shown in the log below. If the total vertical load carried by the piles is 890 kips, estimate the total number of H-piles required. Use AASHTO bearing capacity for the tip resistance and the alpha method for the side shear. Assume HP 1253 steel piles (Fy=50ksi ) piles are used and plugged conditions control. Use F.S.=2 on single pile capacity
A bridge abutment for a two - lane road will be

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