Php duct supports are designed and engineered to adhere to your unique specifications and solve every rooftop issue you have.
Roof duct support spacing.
Pipe size and weight.
Let s dig a little deeper and look at some of the factors that are important to pipe support spacing.
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.
Consideration must be given with restraining ducts to avoid development of excessive internal duct stresses caused by expansion or contraction due to temperature variations.
Schedule a roof evaluation.
The honest answer is.
For 4 0 sections of rectangular duct maintain a spacing of not more that 8 0.
Start by checking your local codes.
For fiber reinforced plastic pipe frp support spacing in liquid service would vary from around 11 ft for 2 pipe to 22 ft for 8 pipe.
Based on the shape of the duct and the length of your duct joints you can now start locating the rest of your supports.
1 ft foot 0 3048 m 12 in.
Php is the leading designer manufacturer and supplier of innovative and sustainable roof pipe and equipment support systems in the nation.
For 5 0 sections of rectangular duct maintain a spacing of not more than 10 0.
And for gas service 17 ft for 2 to 40 ft for 8.
While the standard maximum spacing for roof pipe supports is 10 feet your community may require more supports and tighter spacing.