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how to avoid counterfort walls? (updated)

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EIT eng

Structural
Jun 7, 2022
2
Hello,
I am working on a 5/4 story building that has a basement wall ( see attached) on the left will be 5 story and right will be 4 story.
is there anyway I can pin the wall at the top and ignore using the counterfort.
see here
basement_wall_c8tvgh.png


How can I justify that this is enough to not use counterfort?
Note: there will be a temporary shoring so we can pin the top of the wall and use the slab to pin it a partially.

Is the temporary shoring supposed to hold up the retaining wall until the pinned slab connection can be installed? yes
 
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Where is the counterfort? You could possibly tie back the top of the wall or use tieback anchors to laterally support the basement wall. You do not provide enough information to get good responses. In your sketch, what is new and what is existing? What is the basement depth? Is the temporary shoring supposed to hold up the retaining wall until the pinned slab connection can be installed?

 
If you removed the word "counterfort" from the post, it would make more sense to most readers.
Are you asking if you can pin the top of the wall via the upper right slab to reduce the deflections, reduce concrete wall thickness and footing size? Yes, but with some important conditions.
 
Odd that you deleted the thread from structural - after all, the geotechnical solution is the one you're trying to get rid of. Only way to do that is to go with a structural solution...
 
The proposed wall is not excessively high. I am not sure why the wall needs to be tied back. There seems to be enough room to build a conventional, cantilevered, retaining wall.

 
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