Roof Duct Support Spacing
And for gas service 17 ft for 2 to 40 ft for 8.
Roof duct support spacing. The honest answer is. Start by checking your local codes. For 4 0 sections of rectangular duct maintain a spacing of not more that 8 0. Let s dig a little deeper and look at some of the factors that are important to pipe support spacing.
Consideration must be given with restraining ducts to avoid development of excessive internal duct stresses caused by expansion or contraction due to temperature variations. Duct rests on a 1 5 8 x 1 5 8 length of channel strut which is adjustable up and down using the channel nuts in the corner brackets. While the standard maximum spacing for roof pipe supports is 10 feet your community may require more supports and tighter spacing. Schedule a roof evaluation.
For high density polyethylene hdpe the spacing would vary from 7 ft for 4 pipe with sdr diameter over thickness of 11 0 to 16 ft for 24 pipe. Pipe size and weight. Php is the leading designer manufacturer and supplier of innovative and sustainable roof pipe and equipment support systems in the nation. The 8 ds is a frame constructed of strut and miro s patented bases to support single or multiple tiers of duct pipe cable trays and more.
Support systems for ductwork may provide restraint in three directions against displacement and rotation. 1 ft foot 0 3048 m 12 in. Based on the shape of the duct and the length of your duct joints you can now start locating the rest of your supports.