For some while it has been known that there are errors within the current PD6547 document. The proposal has been to correct these when the document comes up for review but at the last review this opportunity was lost. Since then there has been desire to carry out a more extensive review and include other aspects of design such as flanges. This rather more extensive review requires a business case to be put forward which is currently being considered.
The LCTF publishes its latest documents:
Guidelines for the Additional Protection of Galvanised Steel Columns.
Hot Dip Galvanised Steel Lighting Column Root Protection Systems "Protecting the Vulnerable Root."
Updated 23 September 2019.