GE Industrial Solutions Power-Vac Metal Clad Switchgear; Section 3 - Manual (Page 21)

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Step – 2 Perimeter bolting
Sixteen sets of 0.38 x 1.00 inch hardware is provided for perimeter bolting. The
following guidelines shall be followed :
a) Minimum of 3 bolts on each vertical post
b) For 82 inch deep and 94 inch deep stacks, a minimum of two bolts on each depth
post with at least one bolt in the front compartment and one bolt in the rear
compartment.
c) For 106 inch deep stacks, a minimum of three bolts on each depth post with at
least one bolt in the front compartment and one location in the rear compartment.
Where there are no accessibility issues it is generally recommended that perimeter bolting
be done at all 16 locations.
NOTE : If the units have to be moved or lifted after installation, they should be lifted
only at the shipping splits.