when planning this stacked block wall (similar to allan blocks) I notice the directions call out for landscaping fabric behind the rock drainage column. I question this because I have seen landscaping fabric break down in a number of years.. So I wonder is it really worth it, if it will break down soon anyway?
cbzdel, Fabric behind the drainage column is not always necessary. The purpose of it, is to minimize the amount of soil that may filter into the drainage column. Depending on how high your wall is you may or may not want to install it. Most commercial applications do not require it. Hope this helps. For some good reads on Soils, go here. http://www.goarticles.com/cgi-bin/showa.cgi?C=3087659