Q.1The beam shown in the figure was designed using a concrete strength of 3,000 psi and Grade 60 steel. Determine the theoretical spacing for No 3 U-shaped stirrups for the following values for shear:...

Q.1The beam shown in the figure was designed using a concrete strength of  3,000 psi and  Grade 60 steel.  Determine the theoretical spacing for No 3 U-shaped stirrups for the following values for shear:

                (a)          V_u
= 12,000 lb

                (b)          V_u
= 40,000 lb

                (c)           V_u
= 60,000 lb

                (d)          V_u
= 150,000 lb