Hi Ray and LAPG,

Where can I find a free and local source of urbanite? I am going to shape it for use in a retaining wall at my community garden space. It is about 30 feet long by 3 feet high and currently has rebar and vertical sheet metal as its retaining wall. I want to replace the community garden's sad-looking retaining wall with urbanite as a permacultural replacement and my first practice wall of urbanite before I use urbanite in my own backyard to replace a 70 foot long by 3 feet high retaining wall with some structural problems. Techniques? Suggestions?

Towards sustainability,

Best,

Dennis