End bearing Resistance Calculation

End bearing is calculated from geometry of pier.

R_B=q_max A_p

Where:

q_max=unit end bearing capacity,lb/(ft² )(kPa)

A_p = gross end area of pier,ft² (m²)

For cohesive soils, unit end bearing capacity is calculated based on

q = F_r N_cp*s_u

Where:

s_u = design value for undrained shear strength for the layer being considered

N_qp = cohesion factor

F_r = Reese and O'Neill factor

For cohesionless soils, unit end bearing capacity is calculated based on:

q = p_o* N_qp

Where:

p_o = effective overburden pressure lb/ft² (kPa) at the point in question

N_qp = surcharge factor