Vault

[ivanlocke]

Hello,

I have a reinforced concrete vault that is cast in place with integral walls and floor with removeable lid. I want to do a structural analysis of the vault, but am unsure of how to combine the support from the end walls and the cantilever support from the floor.

Does anyone have experience with the design of vaults can point me in a direction to start? Are there any good reference books that deal with this kind of structure? Is it typical to ignore one of the supporting mechanisms such that the end design is very conservative?

More specifically, the vault I am looking at is ~20'x20', 12' high, 1'-1'3" wall and floor thickness with #6 rebar @ 12" spacing at both interior and exterior faces. Currently the vault is 6' below grade (with manhole access) and I am looking at extending the walls to grade and evaluating if I can use the existing vault for any support.

Thanks,
Ivan Locke

 

[jdmm]

ivanlocke,

I suspect that the reason that you have had so few responses is that this is not really a geotechnical issue. If you asked what earth pressure to use then you would have had many responses. You have asked how do I design it. Sorry, can't help in this venue

jim

 

[ivanlocke]

I realized that I may have posted in the wrong forum right after I hit the button. Maybe I'll post over in foundations or general civil.

Actually, I am going to do some analysis considering the support mechanisms independantly. The strength from one may be all I need for what I am trying to do.

Thanks.

 

[cvg]

try posting in the structural engineers forum