Ground anchors with tieback wall design
Ground anchors with tieback wall design
(OP)
I am working on a 21 foot(above ground surface) tall solider pile wall with tieback anchors. The wall will support 3 concrete tier walls. I considered my first anchor location at 10 feet from the top of the soldier pile. After the completion of hand calculations, I ran a global stability program to check the global stability of the wall system. I got a factor of safety less than 1.25 and the failure slip circle pass through above the anchor location. Then, I moved my anchor up, to 5 feet. Now, I got FS greater than 1.5. But, the factor of safety against passive failure of the retained soil above the anchor was decreased to less than 1.5. Can somebody give me an idea to fix this issue? I used a friction angle of 28 degrees for retained soil.
I really appreciate for our time.
Thanks
I really appreciate for our time.
Thanks





RE: Ground anchors with tieback wall design
RE: Ground anchors with tieback wall design
Thanks for the quick reply. My design spacing is 7 feet and I tried with 6 feet too. I considered the surcharge from all three tiers. It is a single tie back anchor design. I attached a rough sketch of the cross-section.
Thx
RE: Ground anchors with tieback wall design