Rod
Thanks for your response. The pipe sleeve is not between the the monorail top flange and the support structure. The long bolt is inserted from below, passing through the top flange, the support structure (in this case a thin plate which is part of the hanger), the pipe sleeve, a washer...
I was looking at one of the drawing in a crane code. THe connection between the monorail crane beam ends to the support has bolts with lock nuts. The bolts have also pipe sleeves of approximately 60 mm long. What is the function of these pipe sleeves. I suspect that there are there to give...