The column and wall brackets are fabricated from tubular steel, finished with the appropriate decoration, then hot dip galvanised to BSEN1461; this ensures maximum protection and minimum ongoing maintenance requirements. The column brackets are supplied with an internal spigot pipe that will insert into the top of the column offering additional security and strength. This will also ensure the column shaft continues through to the bracket arms without any visual transition. It is important to remember when specifying column brackets that the column height will need to be adjusted to accommodate the design height for the project in question. There are several factors to take into consideration; the bracket height and the choice of pendant, side entry or spigot mounting will also add to or reduce the overall lamp height, and lastly the choice of luminaire, as each will have a different lamp centre in relation to the luminaire body. The weights and windages for the brackets are included in the tables, this may ultimately increase the wall thickness of the column shaft and will need to be identified when specifying the bracket, as the internal spigot diameters will need to be adjusted to the smaller internal diameter. In addition, the cut down column will need two sets of three equidistant screw positions tapped into the column to ensure anti rotation.