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Old 11-11-2017, 06:02 PM
SkyWatch (Dean)
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SkyWatch is offline
 
Join Date: Jan 2013
Location: Adelaide
Posts: 353
There is unlikely to be too much movement in sandy soil, so it should be fine. Rocks can move out a bit, but more in expansive or clay soil.

A rock that size will act just as well as a good deep foundation.

Have fun!

- Dean
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