system against floating pipe
system against floating pipe
(OP)
Hello,
we have to install 2 pipes (100 inches each other) in a swamp area (soft clays with water level 1.5 m below ground). The trouble is that the client wants to install a layer of gravel or crush rock above the pipes for avoid the buoyancy. I don´t believe in that system because it could produce an important settlement in the foundation of the pipes. What´s your opinion? Could be possible a system with screw anchors? The thickness of soft soils is 10 meters.
Thanks!!!
we have to install 2 pipes (100 inches each other) in a swamp area (soft clays with water level 1.5 m below ground). The trouble is that the client wants to install a layer of gravel or crush rock above the pipes for avoid the buoyancy. I don´t believe in that system because it could produce an important settlement in the foundation of the pipes. What´s your opinion? Could be possible a system with screw anchors? The thickness of soft soils is 10 meters.
Thanks!!!





RE: system against floating pipe
"People will work for you with blood and sweat and tears if they work for what they believe in......" - Simon Sinek
RE: system against floating pipe
You have not mentioned the type of pipe that you are using. However, design information is available at the following sites:
http://plasticpipe.org/pdf/chapter10.pdf
http://techserver.hancor.com:8080/technical_notes/...
RE: system against floating pipe
RE: system against floating pipe
RE: system against floating pipe
Are your pipes 100 inches in diameter or 100 inches apart from one another? Where is your project located (country/state)?
RE: system against floating pipe
http://www.steeltank.com/Portals/0/pubs/Welded%20S...
RE: system against floating pipe
[Also, while not saying it is necessarily a problem with what anyone has done or is doing, I'll make a general comment as well about laying lots of buried pipes deliberately on top of at least discontinuous slabs or blocks (at least where pipes are not fully encased). Many decades ago I believe there were common bedding practices in some areas of laying pipes of many materials deliberately on periodic, permanent wooden timbers/blocks or mounds of earth. I think it was eventually found that this can result in some cases/locations at least in non-uniform axial support and loading, as presumably the earth and pipe where there is not underlying blocking had a tendency in the long-term to settle differently than the portion directly at the support. This resulted in localized beam effects not always accounted for in load factors or determinations of required pipe wall thickness etc. For those reasons, unless the pipes were/are purposefully and specially designed for said non-uniform loading, I believe the bedding condition of laying pipes on blocks underground were removed long ago at least from most standards for laying pipes.]
RE: system against floating pipe
I've seen horseshoe shaped reinforced concrete pipe anchors for individual pipelines or double-W anchors (think of two concrete anchors shaped roughly like a W - one on bottom and the other on top then bolted together with long bolts/studs) for double barrel applications.