ᐅ Cistern placed directly next to the construction access road – risk of damage?
Created on: 30 Oct 2020 09:50
T
Tolentino
Hello dear forum members,
the demolition has now been carried out at my construction site (https://www.hausbau-forum.de/threads/lage-stadtvilla-oder-efh-auf-500-m2-rechteck.33505/post-442751).
In addition, a temporary access road for construction vehicles has been established, which unfortunately ends directly at an (empty) (PE) cistern (https://www.hausbau-forum.de/threads/lage-stadtvilla-oder-efh-auf-500-m2-rechteck.33505/post-442845).
My neighbor and co-builder (but with his own house located at the rear of the overall property) is now concerned that the cistern could be damaged if a 40-ton truck drives all the way down the access road. The load is said to be distributed at a 45° angle downward, according to our site manager’s explanation. This would mean that part of the cistern would definitely be subjected to some of the load. There is maybe about 1 meter (3 feet) of soil between the access road and the cistern. The cistern measures approximately 2 x 1.5 x 1 meter (6.6 x 4.9 x 3.3 feet) and is installed vertically, with its longest side buried underground.
Is his concern justified? Would it be enough, for example, to simply fill the cistern? Or would it be better to dig it up and relocate it? Here, I am worried that the access road at the back might then become unstable, even if we refill the hole. We probably won’t be able to compact it properly (the neighbor wants everything done with excavation and loading, EL).
Does anyone here have experience in civil or geotechnical engineering, or could even calculate this? What data would be needed for that?
the demolition has now been carried out at my construction site (https://www.hausbau-forum.de/threads/lage-stadtvilla-oder-efh-auf-500-m2-rechteck.33505/post-442751).
In addition, a temporary access road for construction vehicles has been established, which unfortunately ends directly at an (empty) (PE) cistern (https://www.hausbau-forum.de/threads/lage-stadtvilla-oder-efh-auf-500-m2-rechteck.33505/post-442845).
My neighbor and co-builder (but with his own house located at the rear of the overall property) is now concerned that the cistern could be damaged if a 40-ton truck drives all the way down the access road. The load is said to be distributed at a 45° angle downward, according to our site manager’s explanation. This would mean that part of the cistern would definitely be subjected to some of the load. There is maybe about 1 meter (3 feet) of soil between the access road and the cistern. The cistern measures approximately 2 x 1.5 x 1 meter (6.6 x 4.9 x 3.3 feet) and is installed vertically, with its longest side buried underground.
Is his concern justified? Would it be enough, for example, to simply fill the cistern? Or would it be better to dig it up and relocate it? Here, I am worried that the access road at the back might then become unstable, even if we refill the hole. We probably won’t be able to compact it properly (the neighbor wants everything done with excavation and loading, EL).
Does anyone here have experience in civil or geotechnical engineering, or could even calculate this? What data would be needed for that?
KingJulien30 Oct 2020 20:26Tolentino schrieb:
Question: What is the approximate weight of a PE cistern with around 3 m³ (3,000 liters) capacity?About 100 kg (220 lbs), estimated.G
Gartenfreund31 Oct 2020 00:51Better to calculate with 150 kilograms (330 pounds).
Tolentino schrieb:
and we would both partially drain our roofs into it. Keep in mind that a cistern is not the same as a soakaway system, and with three cubic meters (3,000 liters / 792 gallons), I would honestly see it more as a symbolic underground rain barrel rather than a proper drainage solution (which could easily be emptied this summer with two gardens). Sorry, but thanks to @rick2018, the standards for cisterns in this forum are quite high.
https://www.instagram.com/11antgmxde/
https://www.linkedin.com/company/bauen-jetzt/
Similar topics