PT Slab on Grade & Liquefaction
PT Slab on Grade & Liquefaction
(OP)
I was given a soils report where expansive soils are not a problem, instead the project site is subject to liquefaction. The jurisdiction is requiring that we design the foundation as a post-tension slab on grade. Has anybody ever heard of this?
I'm not sure how to go about my design because the software that we use to analyze the slab requires input for expansive or compressible soils.
I'm not sure how to go about my design because the software that we use to analyze the slab requires input for expansive or compressible soils.





RE: PT Slab on Grade & Liquefaction
Here is a web site that might help. I have heard of this technology and have yet to use it. The sites that I have constructed on have not required it. I know that these type of slabs can get a bit pricy, have you inquired about a dewatering system?
Please keep me posted on your progress I would like to know how things work out for you since I think that this technonlogy can offer a wide variety of applications in saturated soil environments.
RE: PT Slab on Grade & Liquefaction
RE: PT Slab on Grade & Liquefaction
This sounds a lot more like a pile job to me. I'd find out whose idea this was and go make an appointment to see them. They aren't the ones designing in the end, and I'm not sure that P/T is compatible with a SOG.
Best of luck.
RE: PT Slab on Grade & Liquefaction
I will check out that link, hopefully meet with the plan checker, and keep you posted.
RE: PT Slab on Grade & Liquefaction
If you want some of the web sites and links let me know.
RE: PT Slab on Grade & Liquefaction