Renovation of vaulted basin
Renovation of vaulted basin
(OP)
I am currently surveying an underground clear water storage basin for cracking and potential cave in areas. Access is through manholes only. The basin is constructed of concrete vaults supported by columns all unreinforced. Worst case senario is that construction will need to be done with the basin in service, yet to be determined. Assuming worst case I was wondering if their is some way to safely section off/drain certain parts of this basin that may need to have portions of the roof replaced. This type of construction is so old my concrete design book really doesn't mention it at all. If anyone has seen or dealt with anything like this before I would appreciate your input. Thanks in advance.






RE: Renovation of vaulted basin
How many gallons is the clearwell and how deep is the water in it? I have some suggestions, but unless you really love that clearwell, the solution might be a rebuild.
RE: Renovation of vaulted basin
RE: Renovation of vaulted basin
If you remove or prop a single arch then this can disturb the equilibrium.
RE: Renovation of vaulted basin
http://www.waterstructures.com/
RE: Renovation of vaulted basin
Can the cistern be bypassed temporarily during construction?
How much overburden, if any?
Mike McCann
MMC Engineering
Motto: KISS
Motivation: Don't ask
RE: Renovation of vaulted basin
http://en.wikipedia.org/wiki/Centring
www.unhabi
RE: Renovation of vaulted basin
This is stored domestic water (already treated). So, as you would imagine sediment/debris and even storm water falling into the supply is also a concern.
Whether the entire basin can be bypassed during temporary construction is still being determined. This structure was built to last 100 years, unfortunately that time has come and gone.
csd:
I wasn't able to open the second link. I'll continue to get as much information as possible regarding thrust lines and centring. If a portion of this roof needs to be removed every component needs to be in equilibrium.
RE: Renovation of vaulted basin
I know yours is concrete but the principles still apply.