Gravel board as retaining wall?

[ojr]

Hi all,

I'm replacing a fence. The neighbour's garden is about a foot lower and the retaining wall has subsided. If I took out the old wall and put in 9ft concrete posts could I use 12 inch concrete gravel boards to make a new retaining wall?

Or am I asking for the fence to subside over time?

Thanks,

Rob

[stoneyboy]

ojr,
Depending on the ground conditions you may need to sink the posts in by 3ft, less 1ft for the retaining part will leave you with a maximum 5ft fence panel.
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