Continue to Site

Eng-Tips is the largest engineering community on the Internet

Intelligent Work Forums for Engineering Professionals

Register Log in
  • Congratulations cowski on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Concrete wall seeing in plane shear and retaining soil

TM22

TM22

Structural
Oct 22, 2024
1
I have essentially a box of concrete retaining walls formed from the side of a basement wall that will have an opening for egress.

The retaining wall parallel to the basement wall is being designed as a horizontal beam, pinned on each end by the perpendicular retaining walls. Thus providing an in plane force on the perpendicular retaining walls.

Can the perpendicular retaining walls be designed separately for its own retainage and the in plane shear from the other wall's reaction? Or does this in plane shear and the retained soil need to be considered concurrently, creating a biaxial effect?
 

Attachments

  • Walls.PNG
    Walls.PNG
    15.6 KB · Views: 21
Replies continue below

Recommended for you

Sort by date Sort by votes
If the loads are all acting concurrently (which it seems like they will be) then the 2 side walls should consider all the loading simultaneously.

You should check out PCA rectangular concrete tank tables to get a better estimation of the stresses that will occur in the new concrete walls.
 
Upvote 0 Downvote
But I doubt the in plane forces will significantly affect the wall design which is likely to be governed by the out of plane retaining forces.
 
Upvote 1 Downvote
phuduhudu said:
But I doubt the in plane forces will significantly affect the wall design which is likely to be governed by the out of plane retaining forces.
Click to expand...

That's my feeling as well. The in-plane flexure will be down to a localized compression block at one end of the wall and localized flexural tension steel at the other. In between, all OOP. Fundamentally, the appropriateness of disregarding the combined loading is down to the proportions of the wall. If the wall were 5' long and 1" thick, that might be a different thing.

I wouldn't normally even bother to try to account for a biaxial condition explicitly. If we don't limit our efforts to that which truly matters, we never finish.
 
Upvote 0 Downvote
You know me.... down with OOP.

Out Of Plane. My apologies for the undefined acronym usage. I'm getting lazy in my dotage.
 
Upvote 0 Downvote
You must log in or register to reply here.

Similar threads

Ben29
  • Question
new concrete retaining wall / abutting existing rubble wall
Replies
8
Views
4K
Mark_J
Mark_J
bhiggins
  • Question
Retaining Wall Reinforcement
Replies
6
Views
2K
Harbringer80
H
psychedomination
  • Question
Retaining Wall on Basement Wall
Replies
3
Views
4K
CJLCivilStruct
CJLCivilStruct
W
  • Question
Aging Retaining Wall
Replies
16
Views
6K
WebfootHomeImprovements
W
dgengineering
  • Question
Shear wall schedule and notes
Replies
1
Views
2K
RPGs
RPGs

Part and Inventory Search

Sponsor

Back
Top Bottom