Track Bed Investigation Framework re-tender

Description

Network Rail currently has a national Framework Agreement for the provision of Track Bed Investigations for the design and specification of the trackbed for renewals. The site works and services include standard and deep track bed investigations and associated works and reporting. We will shortly be re-tendering for the new Framework Agreement and would like to understand interest in this opportunity in the supply market. We would also like to engage initially with some interested suppliers to help us to build an understanding of the various capabilities and options that may be available to us before we commence this tender. If this would be of interest to you then please could you confirm your interest in writing by email to philip.hunt@networkrail.co.uk by close of business on Friday 16th February 2024. Lot 1: The specification for the current Track Bed Investigation Framework covers the following track bed investigation and associated works, and site & factual reporting which are provided on a national basis: Standard Track Bed Investigation: • Determining the condition of the existing track bed and sub-grade • Assessing the condition of the existing lineside drainage. • Dynamic Cone Penetration (DCP) to determine the soil structural properties. • Trial trenches to determine drainage paths and lateral variation of track bed materials. • Categorising of Spent Ballast for disposal • Measuring structural constraints (clearances) to support the construction phase and compliance with COM Regulations 2015 (Design Risk Register) to determine construction risks and mitigations. Deep Track Bed Investigation • Deeper window sampling and Standard Penetration Test (SPT) using heavy probing techniques for investigating Track Bed Stabilisation sites. Additional Works and Other Investigation Techniques • Stiffness Measurement surveys using Falling Weight Deflectometer (FWD), and Light Weight Deflectometer (LWD). • Drainage level surveys/topographical surveys to support the design track of drainage systems. • Concrete coring of slab track or other associated foundations • Material testing • Rail and sleeper deflection monitoring using cameras, Geophones or similar.