Following figure shows the correct way to support a line that has exceeded its allowable span.

A common mistake is to extend the 10-in process line over the rack bent and cap it, when the line should have been run as if a support problem did not exist.

A smaller piece of pipe or dummy leg could then be welded to the elbow for support (a hole should not be cut in the process line).

Following figure shows how larger lines in a pipe rack are used to support a group of smaller lines that may not be adequately supported because of the bent spacing.

The uninsulated line is U-bolted to the supporting steel; the insulated line has its shoe welded to the steel.

The smaller lines then rest on the steel. When an insulated line is used for support, the growth of the line at the proposed support point must be checked. Its growth could become restricted by this type of support, and it may be better to use another line for this application.