3/4" crushed and 1" crushed is what looks to be the stuff. Stay away from the sand. It's crushed stone you want.
Here is a starting point. They say toward the end "up to 18" of imported material" - that's a highway!
U.S Fabrics Inc. Driveway Fabric Installation Video - YouTube
A local "Building Supply" will have the fabric at the best price. Someplace local sells concrete blocks, erosion control products and other concrete products (drains, vapor barrier etc) They should have the fabric as well.
I would not panic yet . When the frost comes out of the ground it turns to absolute pigshit around here . As it dries and heals up a little it can rain 4" and be as solid as it should . My wife sells lots of rock every spring due to this .
Smmit151
I live in northwestern Ontario and have for the last 65 years, as long as you have ditches on the high side of the road that clay is a very good road base. You just have to keep the water off the top of it, and it sounds like you have done hat with the crown you have on it. I've been building roads for a long time, and most of them were clay based, just put whatever kind of gravel you can afford on top. Wait till it is as dry as you can then lay the gravel to it .
It will be fine,an a couple months you'll be ale to drive a cement truck over it
Cons for the fabric: (have you priced it?) Expensive...
Do you have good drainage? Just because it's rock hard in the summer, doesn't mean that water drains off during the winter. I just looked at your photos again, it looks pretty flat to me...:confused3:
That's not as bad as I thought... Good luck and let us know how it turns out....And for a role of the fabric is $370 and the roll is 20 feet wide x 400 feet long...