Trenches for the grade beams connecting all the posts Tommy and Joel checking out the trenches. All 31 posts are up and braced, ready to begin digging the trenches for the grade beams. 5 feet deep by 3 feet across hole with 10"x10"x16' solid wood posts sitting on 14"x14"x4" concrete pad (31 posts in all) Posts being placed in holes with a "bobcat", heavy chain and many workers. Drilling the holes needed for the posts. Staking the foot print of the New One Eleven.