Addition to existing basement waterproofing
Addition to existing basement waterproofing
(OP)
I am adding an addition to an existing basement on a commercial building and have a question on waterproofing. I believe the existing building basement walls are on a shallow foundation. The addition basement walls will be on a deep foundation.
I would like to tie the new concrete walls to the existing concrete walls, have adequate waterproofing, but still allow some vertical movement between the existing (shallow foundation) and new (deep foundation). Is there a system that can accomplish this?
Thanks.
I would like to tie the new concrete walls to the existing concrete walls, have adequate waterproofing, but still allow some vertical movement between the existing (shallow foundation) and new (deep foundation). Is there a system that can accomplish this?
Thanks.






RE: Addition to existing basement waterproofing
I would like to have a connection that is waterproof (Can I have a waterstop at an E.J.?)
I would like to brace the existing wall laterally
I would like to allow for vertical movement due to the different foundation systems.
Thoughts?
RE: Addition to existing basement waterproofing
See this pdf catalog by Greenstreak (there are others)
http://www.greenstreak.com/subpacks/Waterstop_Cata...
Look at page 10 and their model 581 water stop.
Might call your more local water stop manufacturer's and see what products they might have available.
RE: Addition to existing basement waterproofing
RE: Addition to existing basement waterproofing
Hokie - I am removing a section of the existing wall that was cast monolithically and perpendicular to the wall I am butting against. I do not have plans for the existing structure and am not sure if the section I am removing was originally designed to provide lateral support.
Hokie - Are you suggesting having an EJ and then placing flexible sheet waterproofing at the EJ. What are your thoughts on the product JAE mentioned?
ThankS JAE and Hokie for your help!
RE: Addition to existing basement waterproofing
Generally speaking, primary founding elements for a building should be tied together.
If you're mixing shallow with piled founds, you might create a hard point in the foundation system potentially causing some damage to the superstructure walls/framing over time due to differential vertical movements. maybe horizontal as well if existg shallow founds are on a slope or nearer to a creek or river or other body?
Maybe underpin the existg founds as well with screwpiles/micropiles to mitigate differential settlement risks?
just my thoughts.
RE: Addition to existing basement waterproofing
RE: Addition to existing basement waterproofing
http://flolly.com/basement-ideas/