Number of Welded Stud Carrying Shear
ACI 318-11 Fig. RD.6.2.1(b) Case 2

When anchors are rigidly connected to the attachment (welded
stud is in this case), the total shear would be critical on the
rear anchors.

The author suggests user to set  ns =n2  ns to be equal to the
 number of back anchors at bolt line 2 as shown below.


ACI 318-11 Fig. RD.6.2.1(b) Case 2