Once the four posts were prepared they were cut square at the top and bottom to ensure that they would stand straight. For each post a base was created by digging an 18"x18" hole 4 in. deep, then filled it with stone dust and covered with an 18'x18' patio stone which was then carefully leveled. The posts were then stood up on the patio stone bases.
The spacing of the pergola posts was 12' wide by 15' long. Once the posts were placed they were stablized by temporary braces fastened to pegs. This would allow us to put up the beams without having to worry about knocking over the posts.
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