Sandstone patio base
I'm constructing a sandstone patio, pretty flat stones. I'm using 2 different sizes, the border stones are 2'x4' and 4" thick and the other are 5'x6' and 2" thick. The stones are extremely heavy and large as you can tell and I've been researching a good base to use. Some have said I could get away with just a 3" thick compact base and on top of that using the same gravel or sand to level the 2" stones with the 4" stones. Another resource suggested using a 6" base of gravel. I'm in Northern Ohio so the winters can get cold. I'm not sure how well the gravel base will do with the settling of the stones. The gravel base will be sitting on a clay base which might help as well. Anyone have any experience with using such large stones and what type of base would be best?