4. Maximum strain at the level of compression steel for a rectangular section having effective cover to compression steel as d' and neutral axis depth from compression face as xu is
Correct Answer: the surrounding soil settles more than the pile
7. The basic assumption of plane sections normal to the neutral axis before bending, remaining plane and normal to the neutral axis after bending, leads to :
Options
A. uniform strain over the beam cross section
B. uniform stress over the cross section
C. linearly varying strain over the cross section
D. stresses which are proportional to strains at all cross sections
9. A direct shear test was conducted on a cohesionless soil (c = 0) specimen under a normal stress of 200 kN/m2. The specimen failed at a shear stress of 100 kN/m2. The angle of internal friction of the soil (degrees) is