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Thank you KootK and Aketr for your help! @Aketr: The other direction is also part of the seismic design, but less of a problem because the side walls are continuous from top to bottm. Thanks!

Hi everyone, Does anyone have any experience with elevator shear cores with openings on opposite sites on adjacent floors? I've drawn a little sketch attached to illustrate. Seismic load is the main concern. I'm thinking the continuous flanges can be designed to take out flexure and the floor...

darthsoilsguy2m Thanks for the suggestions! hokie66, That is correct. There are plate shear dowels at the construction joints and no continuous reinforcement. Very unconventional construction for a water retaining structure. That's why we're thinking of using micropiles to hold the slab down...

RHTPE, thanks for your input. Very helpful indeed. hokie66, you are correct about the slab. There are some wing walls to help support the slab, but the slab issue is exacerbated by the fact that it was constructed in separate sections joined together by dowels that aren't very strong. The...

Hey oldestguy, thanks! That's one of the solutions we were thinking of too, let the existing walls be wet walls and build new walls adjacent to them. A couple of problems with this are maintenance and the fact that we'll need to constantly pump water out and discharge it. Also the current slab...

Hey CELinOttawa, thanks for the tip. I'm part of a team working working together and also seeking professional external expert help for this problem. Eng-tips is just one of the sources of help that I thought I'd tap into. Hopefully I didn't come across as someone just trying to find shortcuts...

Hey guys, thanks for the responses. I am the structural engineer hired for this job :). It's a multistorey apartment complex damaged by the Christchurch earthquakes. Waterproofing the basement is among the other works I'm putting together schematically for this building to see whether we can...

Hi guys, just want to get some ideas on how to waterproof a leaking concrete basement. I have a concrete basement consisting of 350-400mm thick slab and 200mm thick precast retaining walls. The slab was originally built with cold joints with inadequate shear transfers. The basement was damaged...