Bowing steel seawall

[BOWTECH.JUSTICE]

Throwing this out there to hopefully find someone in the know.
I have a steel seawall with tiebacks that were installed too far apart. I now have an issue of the wall bowing out right between 2 tiebacks. Im going to put some more tiebacks in and my question is-- If I connect the tiebacks to poured concrete, how big does the concrete block need to be?

 

[dingbat]

Throwing this out there to hopefully find someone in the know.
I have a steel seawall with tiebacks that were installed too far apart. I now have an issue of the wall bowing out right between 2 tiebacks. Im going to put some more tiebacks in and my question is-- If I connect the tiebacks to poured concrete, how big does the concrete block need to be?

In reality, the ground is holding the load. How big is a function of load and soil compaction.

Would probably get better strength by driving something (beam) in the ground and tying off to that

 

[aspeck]

Truthfully, you need an engineer to answer your question, not a couple hacks on the internet that don't know were you are located, the soil you are dealing with, the size and construction of the retaining wall, etc. Anything we tell you would just be guesses at best.

 

[BOWTECH.JUSTICE]

In reality, the ground is holding the load. How big is a function of load and soil compaction.

Would probably get better strength by driving something (beam) in the ground and tying off to that

Sandy soil.
Yeah, The beam probably is best. Im a diy'er so not sure I can drive one down.
I think maybe for starters Im going to follow the other tiebacks to see what theyre anchored too.

 

[BOWTECH.JUSTICE]

Truthfully, you need an engineer to answer your question, not a couple hacks on the internet that don't know were you are located, the soil you are dealing with, the size and construction of the retaining wall, etc. Anything we tell you would just be guesses at best.

I do agree. Ive done alot of research on this matter but you never know what kind of ideas and experience is out there. Iboats has never let me down yet.

 

[sphelps]

If the ones that are in place now are holding other than in between them cant you just match what they already have ? Just a thought ..
@archbuilder

 

[64osby]

Most seawall work requires permits in our area. Might check before you get in some situation that some gobment agency has something to say.

I assume it is bowing out. Maybe remove some of the fill behind would allow the wall to relax back.

 

[BOWTECH.JUSTICE]

If the ones that are in place now are holding other than in between them cant you just match what they already have ? Just a thought ..
@archbuilder

First thing Im going to do is dig down and see what was used. If they're Ibeams, as someone that does everything themselves, I dont believe I will be able to drive them down. Im just wanting to here what someone else may have done with success.

 

[BOWTECH.JUSTICE]

Most seawall work requires permits in our area. Might check before you get in some situation that some gobment agency has something to say.

I assume it is bowing out. Maybe remove some of the fill behind would allow the wall to relax back.

Yes it is bowing out. I have done some other work behind this wall and I realized the backfill was mostly dirt and no drain tile. I was hoping to not make it too big of a project, but I think the right thing to do is dig out, then maybe be able to pull the wall back, put in the deadman, lay a drain tile and back fill with some stone. This is why I was asking if anyone ever done this with some success without breaking the bank. The wall is already 25 years old so Im trying to keep it from failing altogether