Hi, Chris, and welcome to the Pool Forum!
There is a section called Inground Pool Construction and Repair but i don't think you will find too many posts about building retaining walls in there. This forum deals more with water chemistry and equipment issues than construction. But, feel free to poke around and you may find something useful. (Until your registration is completed, you will need to log out first to be able to see the rest of the forum.)
The search feature that is a part of the forum software isn't very useful. Better to use the google search in my (or PoolDoc's) signatures or you can also find it on our sister website www.poolsolutions.com.
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