Steel pipe piles are to be used as friction piles (i.e., pile capacity is from shaft resistance only) in an area where a deep deposit of normally consolidated clay exists. The soil unit weight is 17...

Steel pipe piles are to be used as friction piles (i.e., pile capacity is from shaft resistance only) in an area where a deep deposit of normally consolidated clay exists. The soil unit weight is 17 kN/m³, with shear strength cohesion c_u
equal to 45 kPa. Using the total stress α-method, determine the design axial capacity due to shaft resistance for a pile diameter of 0.30 m and an embedded length of 10 m. Apply a factor of safety of 2.75.