Step 5 - Securing the 4"x4" Posts

Attach 2"x6" support boards to the 4"x4" posts using two 2 1/2" galvanized deck screws from each side. (Image 5)

Step 6 - Position remaining Supports

Position and attach 2"x6" support boards to the end boards using two 2 1/2" galvanized deck screws at each end. Position Dek-Block brand piers beneath the support boards. Measure distance from the bottom of the 2"x6" support boards to the pocket of the Dek-Block brand piers. Cut 4"x4" posts to length and position between 2"x6" support boards and Dek-Block brand piers. (Image 6) Repeat until all 4"x4" posts are cut and positioned. Secure all 2"x6" support boards and 4"x4" posts as shown in Step 5.

Step 7 - Layout and Level Octagonal Supports

Position the remaining two rows of Dek-Block brand piers according to the measurements provided in the plan. Use the existing frame as a leveling point to determine the height of one of the 4"x4" posts for each row. Cut and position the 4"x4" posts in each of the Dek-Block brand piers. Use a 2"x6" support board as a level guide to determine the remaining 4"x4" posts. (Image 7)

Step 8 - Building the Octagonal Frame

Using the measurements provided in the plan, cut the three outside 2"x6" frames of the octagon. Attach the outside 2"x6" frame to the existing rectangular frame using two 2 1/2" galvanized deck screws at each end. Use temporary blocking to support the frame. (Image 8) After the outside 2"x6" frame is secured and attached, cut the two remaining 2"x6" support boards to fit between the two angled sides of the frame. You will need 45 degree cuts on both ends. Position and attach to the outside 2"x6" frames and 4"x4" posts. (Image 9)

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