Protection of HDPE conduits
Protection of HDPE conduits
(OP)
Hello
I am currently working for the survey of the construction of a container terminal area. We use HDPE conduits between culverts for the storm water drainage system. Problem is some conduits which are under reinforced concrete slabs are not well protected ( if we add only 20 cm of sandy coating material , the slab will be above the conduit literally ) . The subgrade material consists of silty fine sand and the slab is 25 cm thick reinforced with 8 mm bars .
The following picture may help you to get an idea, i also draw two possible solution to the problem. Anyway, we classify HDPE in France according to the nominal pressure it can withstand and in this case its a 6 bars class HDPE. The subgrade soil is in a loose state.

Thanks
I am currently working for the survey of the construction of a container terminal area. We use HDPE conduits between culverts for the storm water drainage system. Problem is some conduits which are under reinforced concrete slabs are not well protected ( if we add only 20 cm of sandy coating material , the slab will be above the conduit literally ) . The subgrade material consists of silty fine sand and the slab is 25 cm thick reinforced with 8 mm bars .
The following picture may help you to get an idea, i also draw two possible solution to the problem. Anyway, we classify HDPE in France according to the nominal pressure it can withstand and in this case its a 6 bars class HDPE. The subgrade soil is in a loose state.

Thanks





RE: Protection of HDPE conduits
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RE: Protection of HDPE conduits
RE: Protection of HDPE conduits
the concrete arch is cheaper as you will not have to remove and reinstall the existing HDPE pipe. with full encasement, you will have to completely remove and replace the pipes. if you were to do that, than just use stronger pipes? if you go the full encasement route, than use the flowable fill.
RE: Protection of HDPE conduits
IMHO, I would not take that risk. Full encasement with flowable fill would be my preference.
www.SlideRuleEra.net
www.VacuumTubeEra.net
RE: Protection of HDPE conduits
RE: Protection of HDPE conduits
RE: Protection of HDPE conduits
RE: Protection of HDPE conduits
If your HDPE pipe is less than 12 inches in diameter and 500mm or more below the slab, I wouldn't worry about it, just make sure everything is well compacted and the pipe is well bedded.
RE: Protection of HDPE conduits
I want to know if i deliver 1.25 mpa to the rc slab , and the slab has a compressive strength of 25 mpa how much pressure gets transfered to the soil?
The client insists on a protective idea so i have no choice
RE: Protection of HDPE conduits
I want to know if i deliver 1.25 mpa to the rc slab , and the slab has a compressive strength of 25 mpa how much pressure gets transfered to the soil?
The client insists on a protective idea so i have no choice
RE: Protection of HDPE conduits
RE: Protection of HDPE conduits
RE: Protection of HDPE conduits
RE: Protection of HDPE conduits