Plastic Storm Water Pipe Floating
Plastic Storm Water Pipe Floating
(OP)
Any suggestions on a problem with corregated plastic storm drain pipe floating? I have 12" To 18" of cover(per manuf. specs.) and the ground water is approx. 3' below the IE of the pipe, its been in the ground since 2001. Looking for any solutions or similar experiences and corrections.





RE: Plastic Storm Water Pipe Floating
RE: Plastic Storm Water Pipe Floating
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RE: Plastic Storm Water Pipe Floating
RE: Plastic Storm Water Pipe Floating
RE: Plastic Storm Water Pipe Floating
RE: Plastic Storm Water Pipe Floating
RE: Plastic Storm Water Pipe Floating
You will have to reinstall the pipe to be sure it is to proper grade. Then you will probably need to construct concrete anchors as covered above. These can be constructed on both sides of the pipe even after it is installed and then straps (SS cables, etc.) run across the pipe and fastened to the anchors on either side.
RE: Plastic Storm Water Pipe Floating
RE: Plastic Storm Water Pipe Floating
RE: Plastic Storm Water Pipe Floating
While it is true that all pipes can float (the first incident I ever heard of was to a (I think 66") diameter concrete waterline now a quarter century or more ago, that I think made quite a mess of joints etc.!), I think it is also true that per Archimedes you are more likely to get a flotation problem if the "bulk density" of what you're dealing with is very markedly less than the bulk density of a fluid surround plus any effective (submerged etc.) earthload bearing down on same . It would perhaps also help if the pipe has at least a little out(side) surface texture, that one would think would help minimize any tendency toward vertical movement relative at least to the soil surround?
Unfortunately, I think the specific gravity or bulk density of the particular pipe you are dealing with may well be, even if assumed to be full of water, near or less than that of even pure water, let alone a greater density of soil that might become liquified, or fluid concrete if this is chosen as a weighting medium?
Unfortunately also, it appears a perception promulgated by some that "lightweight" and "cheap" are good can sometimes collide with Engineering reality (or "Acts of God" not necessarily foreseen by Archimedes a couple thousand years ago?) just a few years after original installation??