What are these tall, uncapped pipes for?

pj1016

Member
Feb 13, 2008
9
Can anyone tell me what these tall green pipes are for at my friend's pool? They are open to the atmosphere. The equipment pad is below the pool height-wise.

I don't have any pipes like this at my pool, but my equipment is at the same grade as my pool deck...


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Brett S

Well-known member
Mar 15, 2019
709
Orlando
Unfortunately I have no idea about the pipes, but I did want to say that the amount of erosion under the pad is very concerning. They probably want to get that fixed soon before something gets damaged.
 
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JamesW

TFP Expert
Mar 2, 2011
21,114
Possibly suction limiting vents.

You might need to put a garden hose in the pipe to see where the water comes out.
 

pj1016

Member
Feb 13, 2008
9
Yes; there is a spa. It is above the pool. Come to think of it, the only time I've ever seen pipes like this is when the spa is above the pool...
 

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