Internal column skeletons are typically made of 5" x 5" tubular steel. The hinge arms are typically 4" x 4" tubular steel and can be mounted to the end of the arms. There are two types of hinges generally used on driveway gates; block hinges and flange bearing hinges. The flange bearing hinge is the preferrable choice as it allows adjustment which is especially critically for bi-parting gate installations.

Lighting fixtures are common on both the top and front of gate columns and should be accounted for when constructing the skeletons.

The gate should be hung prior to applying any masonry which assures the gate placement is correct before the columns are built.

DIY Driveway Gate Column Skeleton Diagram