Haven't noted any issues. This was all dirt. I tilled my workspace and mixed in with the existing dirt in area.
A 40 Lb. bag of soil is approximately 0.75 cubic feet. A 23 ft. by 9 ft. area 3 inches deep would require 69 bags. The same area 4 inches deep would require 92 bags.
I ordered 30 bags delivered on a pallet
According to Google, 40 dry pounds is 1 cubic foot. So your answer is 12 square feet 1 inch thick
depending on depth but spread out completely flat id guess about 3.5'x3.5' or slightly more
Given that a Cubic Yard measures 3 feet high by 3 feet wide by 3 feet deep and that the plastic bags compress to the point that when stacked they reflect an accurate representation of their mass, a standard 6 inch thick, 3 by 4 pallet stacked 3 feet high should be roughly 1 Cubic Yard. Also, each bag contains around .75 (3/4) of a square foot meaning it takes 36 bags to make up a Cubic Yard, Count the bags and/or measure the pallet at your Garden Center or just order 36 bags.
Google says "A 40 pound bag of topsoil usually contains about 0.75 Cubic Feet of soil."
Yes, I believe this would work.
Yes. The sod should take to it without issue.
Around 50. But honestly, don't buy it.