When installing a crane with a free standing gantry system it is imperative to have the gantry track perfectly level in order for the crane to run true on the rail. In order to make sure the gantry track is installed level our engineers will use packers under the base plate of the crane column as factory floors are never level over a distance.
If your floor is only a few millimeters out this can be exponential at the top of the crane column where the gantry track sits. To avoid this issue we will always pack the columns whenever possible.
To make the finish look professional and help secure the packed column itself we will grout under the bases. This also helps the floor from cracking. We use non shrink grout, not
cement, as this settles and cracks over time.
Some crane engineers will just sit the crane columns straight onto your factory floor. This means that tops of the crane columns will sit out of line, so when the gantry is fitted the crane columns will have to be bent into position to accept the bolts. This can be dangerous as having the gantry out of line can cause the crane to crab and get stuck, as well as plain ands simply looking awful.
To ensure a perfect level to your gantry our engineers will take a datum point in your factory then laser measurements are then taken in all directions to confirm
the column positions and height. The columns are then packed to ensure each has the same finished height.