Drive Foundations
Drive Foundations
(OP)
I am extending my driveway using light decorative paving slabs. The drive will only have to take the weight of a light family saloon car. What foundations do I need?
The soil below the surface contains large amounts of clay. If I put down 2 to 3 inch of aggregate and then finish with a layer of building sand 2 inch deep, will that be sufficient? Or Would I be better using a dry mix of sand and cement instead plain sand?
The soil below the surface contains large amounts of clay. If I put down 2 to 3 inch of aggregate and then finish with a layer of building sand 2 inch deep, will that be sufficient? Or Would I be better using a dry mix of sand and cement instead plain sand?






RE: Drive Foundations
Carl Bauer
www.bauerconsultbotswana.com
RE: Drive Foundations
Do not use a mixture of cement/sand/gravel as a subbase for the pavers. This will not allow free drainage from the top and can result in "pumping" or water pressure build-up beneath the pavers. Since you have clay, use a free draining coarse sand or gravel/geotextile/sand bedding.
RE: Drive Foundations
RE: Drive Foundations
Carl Bauer
www.bauerconsultbotswana.com