crane installation team offer to grout around the overhead
crane's upright portal columns; we use non shrink grout, not
cement as this settles and cracks.
floors are never level, far from it. If a new warehouse floor
is only 2.5mm out, the top of a 5 meter high crane can be
over 10mm out of line.
What we don't want to be doing is using shims to level the
steel to marry up the holes of the down shop steel. At AG
Cranes we use packers under the cranes upright free
standing columns before line and leveling with lasers.
laser measurements are then taken in all directions to confirm
it is level before fully tightening the bolts. The crane can
be tested before the non shrink grout is poured. After testing
non shrink grout can be poured into the base. Within a day
it is good to go!