I think I found a lot of cheap Belgian blocks, (granite blocks 13"x5"x8") that weigh about 50lb each.

Anyone have any experience doing a low (30") retaining wall with these type of blocks? It doesnÂt seem to be common practice. I would use mortar on the joints because these stones tend to slide on each other, and I would leave the vertical joints open a bit for weepage. I would lay them on the flat side so the wall would be 8" thick with staggered joints. The stone faces would be 13" x 5" high. I plan to work some natural stone into the wall that I have on property, especially boulders at itÂs base, as well as set some of the blocks vertically in some locations for a more random effect. Might break some of the blocks as well for same reason.

I have read a great deal about rock walls in general and I am an engineer with a strong back and time. Anyone have any input on the use of the Belgian blocks in a wall like this. Is it not typical because itÂs not good or because itÂs expensive? I plan to cap the wall with 2" thick bluestone, about 12 wide for a 2" overhang on both sides.

Thanks for the input.