Do natural swimming pools need retaining walls?
I am building a rectangular swimming pond 4ft deep. What conditions would make a retaing wall mandatory?
I am building a rectangular swimming pond 4ft deep. What conditions would make a retaing wall mandatory?
I assume you saw our page on how to build natural pools? It has a free download DIY Natural swimming pond building guide, and it will likely answer all your questions, but – are you asking how to prevent it from caving in after you’ve dug the hole but before you lay a liner and fill it with water?