I am doing supporting for HDPE pump suction ( OD 300 mm , 25 mm thk.)and discharge ( OD 250 mm , 22 mm thk, 9 bar ) for Potable Water system. I searched through this forum for HDPE supporting but didn't got any help.

I am thinking of giving countinuous support for HDPE pipe as far as possible and rigid support at valve/special item locations.

What type supporing to be done for HDPE piping?

What is support span?

Do I need to do the stress analysis ( or hand calculations)for this potable water pump system? If yes..How?

-Krish

One of my favorite ways to support plastic piping is to set it inside an angle oriented in a V shape. Another option is a channel section with similar orientation, which may be better for a pipe this size. HDPE is notoriously not rigid, and you may want to consider this.

The piping codes are mute on this subject, for good reason. Perhaps your vendor can suggest an appropriate maximum span - I would not expect it to be large.

Thank you Craig. I already talked with the vendor for HDPE supporting , but he seems to have very little idea about it.

I have decided to support in a Channel..But why channel? because it requires quite heavy channel to accomodate this size line.
How if I rest a pipe on a plate ( countinuous ) and give guide at 1 m by U bolt?
And what arrangement should I follow for vertical run af about 3 m? Is U bolt ok?


-krish

I agree, U-bolts are a good idea. Channels will work also.

I think that for a 3m riser you can just support it at the top and the bottom and let the riser alone - but you might want to calculate the stresses in the elbows due to the weight of the pipe. If that calculation tells you that you need to support the riser, you could U-bolt it to a channel.