estimate and build a deck in 7 easy steps dengarden
5 apr 2016 . to support the weight of the deck we want to cement the posts. . because our deck will measure 16 feet wide by 12 feet out from the . the space between the joists will actually measure 14 1/2 inches . deck) by an average 7 inch rise and round it off to equal 5 steps with our desired 10 inch tread depth.