Hello everyone,
my neighbor suggested that I lay the sewage pipes (KG pipes) directly in gravel.
Is this feasible, or does it have to be sand? Does gravel damage the KG pipes? Are there any standards or regulations for this? I thought KG pipes are stable enough to be bedded in gravel.
Thank you very much and best regards from BaWü
my neighbor suggested that I lay the sewage pipes (KG pipes) directly in gravel.
Is this feasible, or does it have to be sand? Does gravel damage the KG pipes? Are there any standards or regulations for this? I thought KG pipes are stable enough to be bedded in gravel.
Thank you very much and best regards from BaWü
T
T_im_Norden17 Oct 2020 10:09Yes, it can. Split wood is coarse and sharp.
hausnrplus2517 Oct 2020 10:29So, my husband is a professional and also advises against it. The risk of damaging the pipe varies depending on the grit size, being slightly higher or lower. Of course, not within one year. The question is what happens in 20 years. You just won’t be able to access it if something should go wrong... The most vulnerable parts are, of course, the joints/transitions...
bauenmk202017 Oct 2020 10:57annab377 schrieb:
Thanks for the reply. Okay, what was the reason for using crushed stone instead of the usual sand in your case? Well, the civil engineer handled it that way. If you’re at that stage again, then use sand... From what I’m reading here, crushed stone seems to be "the safer option."
To all involved, take a look at what I found online today:
Statement: Approved building materials and soils in the pipeline zone
Dear Sir or Madam,
Building materials in the pipeline zone must not contain components larger than the following according to EN 1610 : 22 mm (7/8 inches) for DN ≤ 200 and 40 mm (1 5/8 inches) for DN > 200 up to DN ≤ 600.
This means only KG pipes DN 250 – DN 500 may be installed in building materials with a grain size of, for example,
16-32, 0-32, and 0-40.
Both granular, unbound, as well as crushed building materials are suitable for use in a pipeline zone. Recycled building materials may also be used as long as the components of the materials are < 22 mm (7/8 inches) (for DN 110 - DN 200) or < 40 mm (1 5/8 inches) (for DN 110 - DN 600).
Here are some building materials suitable for pipe surround:
- Single-grain gravel, rounded gravel, rounded gravel mixture
- Non-cohesive soils (G1 soils) (sand-gravel mixtures): GE, GW, GI, SE, SW, SI
- Weakly cohesive, mixed-grain soils (G2 soils) (gravel-silt, gravel-clay, sand-silt, or sand-clay content with 5 to 15 weight percent ≤ 0.06 mm (0.002 inches)): GU, GT, SU, ST
- Material with graded grain size
- Sand, rounded sand
- Grain mixtures (all-in)
- Crushed stone, gravel mixture, planed gravel, recycled gravel such as concrete and brick recycling
- Glass sand, crushed glass, crushed glass from recycled glass, glass sand-crushed glass mix
For further questions, our technical/laboratory department is happy to assist you.
Best regards
Gebr. Ostendorf Kunststoffe GmbH
seat88 schrieb:
See post #3However, post #3 was clearly less objective.