Position and attach rail-mounting cleats to the top and bottom of these assembled posts to hold the pre-built lengths of horizontal railing.
Position and attach concave mounting plates to mount the other end of the horizontal railings to the round porch columns, driving a screw through their centers. Mark the center of each plate and a base line for the railing mounting cleats in the next step.
Add rail-mounting cleats on top of the mounting plates and secure them with screws.
