Wall Design

[LOKSTR]

We are designing cantilever retaining walls for an industrial structure for bulk storage. The wall is tapered with thickness at top of 800mm(32")and 1800mm (71") at base. The walls have some heavy axial load also due to moving crane wheels.

Do ACI-318 chapter for 14 for walls is equally applicable for this type of wall thicknesses or is it applicable for walls upto say 20" or 24" thick only?

 

[asixth]

How high are the walls. Must have some big loads.

 

[LOKSTR]

The walls are 10m high.

 

[JedClampett]

I wouldn't be designing out of Chapter 14, Walls, but Chapter 10 (Flexure and Axial) and 11 (Shear) for a retaining wall. Chapter 14 is meant more for Building Walls. The thickness isn't really a factor, just the loadings.
You sure you don't want to tie them back? These are going to be hard to get to work for sliding and bending.

 

[LOKSTR]

JedClampett

The wall is cantilevered from a grade beam 2m x 2m size(supported on piles) and the grade beam is designed for all torsion, shear and other loads.

 

[JedClampett]

I'm not sure what your pile spacing is or how you take the torsional moment out using piles, but for the wall itself, Chapters 10 and 11 are still your bread and butter.
Note that your torsional loads are going to be pretty hard to handle. A 6'-0" square beam will help, but torsional design in concrete is difficult all by itself, plus your wall weights and lateral loads.
I would advise adding a heel to the wall to resolve some of the torsion, but that's up to you. Good luck.

 

[LOKSTR]

Thanks JedClampett .

I had used chapter 10 and 11 for design but just wanted another opinion regarding chapter 14.
The pile spacing is 10m with grade beams in both directions. Adding heel is not an option due to process requirement.