scope:

This Standard applies wherever there is a proposal to cut or grind away, drill into, fix to, or support from, any part of the fabric of existing LU structures. It is also applicable to structures that it is proposed to change by addition or removal of structural elements.

Purpose

The purpose of this Standard is to define the requirements to be met before cutting, grinding, drilling, fixing to, or supporting from existing structural members that are part of assets for which London Underground has responsibility is undertaken, and the requirements to be met after such actions are complete. The mandate to monitor, control and record all cutting, grinding, drilling, fixing to and supporting from existing structures is contained in standard 1-050 Civil Engineering - Common Requirements.