scope:

This module provides different approaches to evaluate on surveying activity for which a co-ordinated engineering, land, topographic or measured building survey is required.

It ensures that project managers, project engineers and other project team members have an appreciation of a range of techniques that may be used. However, this is no substitute for appointing a competent Client survey manager for all projects.

An overview and recommendations on the GRIP stages that the various techniques are best suited for is provided.

It is intended to be used in conjunction with NR/L2/TRK/3100, Topographic, engineering, land and measured building surveying - Strategy and general. Other modules specify information to enable a specification for survey data collection to be developed for the disciplines of Track (Module 1), OLE (NR.L3/TRK/3105 to become Module 5) and Asset data extraction and Topographic surveying - Signalling.(NR.L3/TRK/3104 to become Module 4).

It specifically excludes ground investigation, geotechnical, building condition, dilapidation surveys and surveys associated with Network Rail owned and operated measurement trains.

The concept of a survey risk register is covered in NR/L2/TRK/3100.

Purpose

This module has been written to enable a general understanding of the techniques for Topographic surveys minimising the risks of poorly executed Topographic survey works being undertaken.