Two identical concrete piles having the plan dimensions 50cm × 50cm are driven into a homogeneous sandy layer as shown in the figures. Consider the bearing capacity factor Nq for ϕ = 30° as 24.If QP1 and QP2 represent the ultimate point bearing resistances of the piles under dry and submerged conditions, respectively, which one of the following statements is correct?

Two identical concrete piles having the plan dimensions 50cm × 50cm a

1.	Two identical concrete piles having the plan dimensions 50cm × 50cm are driven into a homogeneous sandy layer as shown in the figures. Consider the bearing capacity factor Nq for ϕ = 30° as 24.If QP1 and QP2 represent the ultimate point bearing resistances of the piles under dry and submerged conditions, respectively, which one of the following statements is correct?
A.	QP1 > QP2 by about 100%
B.	QP1 < QP2 by about 100%
C.	QP1 > QP2 by about 5%
D.	QP1 < QP2 by about 5%
Answer» B. QP1 < QP2 by about 100%