*This project video and walkthrough provided by Keystone Retaining Walls and serves as a general explanation of how to build this project. Measurements and products may slightly vary when using RCP manufactured units. Please contact us if you have any questions.
This 20" x 20" column is an easy Do-It-Yourself project for any beginner. It is an excellent way to end a landscape retaining or freestanding wall, or when creating columns between iron or wood fencing. For a larger, 30"x30" column, you can use the course diagrams from the Country Manor Column with Light How-To.
Mark a 32" x 32" column location and excavate 8" deep. Compact the soil. Add 4" of granular base material. Compact and level base to avoid settling and provide a solid base for building the column.
Place Country Manor large and small units as shown. For this first course, make sure to level each block front-to-back and side-to-side making sure each block is level to each other. This leveling is critical to keeping your column vertical.
Note: Use this layout for courses 1, 3, 5, & 7
Clean top surface of the units. Apply an outdoor concrete adhesive (as shown) in a continuous .25" bead, 3" from outside edges.
It is suggested that you dry fit each course of blocks before you apply the construction adhesive to ensure that you have the correct block, orientation & fit.
Place the next course of blocks (as shown) on top of the course below. Continue to build column, alternating and leveling each course, shim if necessary. Secure each course with outdoor concrete adhesive as described in STEP 3.
Note: Use this layout for courses 2, 4, & 6
Finish the column with Country Manor cap units. Secure in place with outdoor concrete adhesive.