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Jeffandjosh

08:45AM | 04/13/05
Member Since: 04/12/05
1 lifetime posts
Bvmisc
I am building a retaining wall out of the concrete blocks that you can buy at several home stores. I have read that you should put down a base of compactable crushed stone under the first course of blocks. A landscape contractor friend of mine says I should us pea gravel instead. His reasoning is that "pea gravel achieves 95% of its compactability immediately" without the need for tamping. I am looking for a knowledgeable second opinion.

Thanks,

Jeff

PaverPro

07:17PM | 04/26/05
Member Since: 03/09/04
32 lifetime posts
Hello Jeff,

I am afraid your friend is offering you misinformation. Imagine if you will the kids ball jump at McDonalds Playlands. When you jump into the balls, they disperse in all directions giving you a soft landing. That's pea gravel. Now fill that same ball jump with squares, rectangles, and triangles. Your gonna hurt yourself if you jump into that. The individual pieces are going to lock into each other and become rigid. That's 1/2 inch crushed stone. Use the crushed stone. About 5" of it, and make sure you bury at least half of the base course block.

George Nicula

Brickways, LLC

www.brickways.com

lonestarlogan

05:09PM | 06/06/05
Member Since: 06/05/05
1 lifetime posts
I'm also wanting to build a retaining wall from these type of concrete blocks. I want it to be about 3 foot high. Do I have to have a footer for this? Or can I partially bury the first block?What kind of support for the wall should there be?

We currently have a retaining wall made out of landscape timbers but it is starting to rot. Every 3-4 feet is a support, about 3 foot of the timbe sticks out of the ground and is nailed to the wall while 4ft or so is buried. Should something similar like this be done with a block wall? Is there some kind of cheap metal posts I can use? Thank you for any help.
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