I am building a ground level deck. We have a bilevel, so our house is on a slab at the ground floor (no basement). There is about a 15° grade away from the back door to the yard.
I have all the lumber, but i think that I need to drop earth in front of the back door to give enough room for the joists and subsequent decking that will be placed on top.
How much earth should I move? What is the most cost effective way to do it while not requiring too much labor? The deck is roughly 200sq ft with a depth of about 12 feet.