Given that, I am going to break this down into parts just to show how long this process truly takes when you are doing it by hand and not with a backhoe or tractors etc..
So the first thing after you cut and lift some of the grass to allow earth contact, now some folks have backhoes and can dig trenches to lay the wood into but I don’t have that possablity so mine are built above ground, maybe up to a four inch depth in the trench.
So this would darn near perfect wood to put into your base.. and I have a bit of it, I will use it carefully and set it along the whole line as much as possable as it will help start the rot process of really well with the new wood that is being used.. ok, its not really fresh, it has aged anywhere from one to two months but trust me that is still very green wood for this use..
Cutting, trimming and weaving the wood together and lots of stomping to come yet but so far we have two large tree’s laying side by side, three tree’s long I will have to measure it to figure out the starting length..
The area picked is perfect, it has full sun, its a low spot that floods each spring for a good soak and filling of the wood with water, but when allowed to be used as a garden it will work wonderful but when it fully rots down, it will just fill in the low spot in the end.. a win/win the whole way round!