I just took delivery of all the steel to assemble the runway for my 5 ton 33' span bridge crane. The bridge and runway were built and installed by US Crane. Not homemade. Before I pour the foundations and start cutting steel to length I want to triple check all my dimensions. The runway itself is W14/43 with 1.5" square bar on top for the bridge wheels to roll on.
The 4 bridge wheels have flanges on the inside and outside, but the rail contact area for the wheels is 2.5" wide. If I centered the 1.5" rails position under the wheels the bridge has an entire inch to move side-side. This seams too much to me. I'm thinking putting the rails each outboard 1/4" from center of the wheels on each side to give the bridge 1/2" total side-side play.
Does this seem reasonable or should I center the rails under the wheels?
I did not take the crane down. US crane doesn't have drawings.
The 4 bridge wheels have flanges on the inside and outside, but the rail contact area for the wheels is 2.5" wide. If I centered the 1.5" rails position under the wheels the bridge has an entire inch to move side-side. This seams too much to me. I'm thinking putting the rails each outboard 1/4" from center of the wheels on each side to give the bridge 1/2" total side-side play.
Does this seem reasonable or should I center the rails under the wheels?
I did not take the crane down. US crane doesn't have drawings.