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Rock to use under garage and driveway
Last Post 18 Sep 2009 02:10 PM by wes. 6 Replies.
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Boontucky-girlUser is Offline
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15 Sep 2009 09:32 AM
I am getting ready to order the rock to use as a sub-base underneath the garage and the driveway slabs. We plan on compacting the soil under the rock, and also compacting the rock after it is placed, and would like help as to what type and size to order.
Thanks.
SummersUser is Offline
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15 Sep 2009 10:48 AM
Real easy to go to http://www.aggregateresearch.com/forum , log in and ask the people who know!
The Cost Effective Answer to Concrete Corrosion
vhehnUser is Offline
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16 Sep 2009 02:01 PM
i use what is called 3/4 crushed rock. that will give you good drainage.
Boontucky-girlUser is Offline
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18 Sep 2009 08:20 AM
The quarry here has a 3/4 minus crushed limestone, or an S-sand that is basically the powder from limestone crushing. I think that is what contractors use for residential slab. I'm leaning towards the 3/4 one since I have about 4" to fill. Thanks for the help.
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18 Sep 2009 09:24 AM
I prefer 3/4 clean plus fabric for better drainage.
Boontucky-girlUser is Offline
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18 Sep 2009 10:16 AM
Drainage under the garage slab? Or are you talking on the parking area outside, or all?
wesUser is Offline
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18 Sep 2009 02:10 PM
Drainage under any concrete is a good thing. It relieves hydrostatic pressure that could cause cracking. This is true either inside the garage or outside in the parking area.
Wes Shelby
Design Systems Group
Murray KY
wandr@ainweb.net
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