Replies

1. 
   DanH | Oct 01, 2018 07:53am | #1

   Insufficient information.

1. 
   user-5487038 | Oct 01, 2018 11:00am | #2

   Raised patio

   sorry...I’ll explain.   Location is Jekyll island Ga. the island is hard packed sand from river runoff. The project is a raised patio.

   wall height is about 24”.  We pour footers, etc on the hard pack but not sure if the smaller footprint of a block wall will have a tendency to shift.  At other locations I always build on a stone fill base...never on sand.

   so....you think I should over excavateband compact some rock....or just build on the sand base.

1. 
   DanH | Oct 01, 2018 01:15pm | #3

   Depends on the nature of the sand, and the subterrainian water flow.  Some sand is remarkably stable, some sand ain't.

2. 
   sawdust_steve | Oct 01, 2018 01:46pm | #4

   The stone base is there for drainage not bearing capacity. If your slab is reinforced you wont need to worry much about capaccity.

2. 
   florida | Oct 01, 2018 03:34pm | #5

   Yes, but not a lot. 6 inches of gravel will do the job on hard packed river sand. If the sand is soft yolu'llneed more depth and width.