Search Results: 'Mott MacDonald'

Up the junction, round the bend
23 October, 2020
While pushing a preformed portal box through an excavation has been done before, a Network Rail project demands that it be done on a curve – and that hugely increases the complexity. Julian Champkin reports

Connecting HS2 at Euston
22 September, 2020
Work on the UK’s new HS2 high-speed rail line is on track. Emma Hale and Christoph Eberle of Mott MacDonald describe one of the line’s first underground structures to be built in London

Flooding raises questions over SMART tunnel efficacy
17 September, 2020
Questions are being asked as to why the SMART tunnel did not protect Kuala Lumpur after extremely heavy rainfall caused major flooding in the Malaysian capital recently.

Guidance on writing a GBR
25 August, 2020
New guidelines being drawn up by CIRIA aim to show how geotechnical baseline reports can help manage geological and geotechnical risk, and reduce costs. George Demetri explains

Fire performance of concrete tunnel linings
25 August, 2020
Fire testing of concrete tunnel linings and the effects of explosive spalling were the subject of the British Tunnelling Society talk in March. Rosa Diez of Mott MacDonald reports

Tunnels facilitate first UK curved jacked-box structure
05 August, 2020
On 1 August 2020, UK-based Morgan Sindall broke through on the second of two tunnels on Network Rail's Werrington Grade Separation project. Advancing around 7m/day, a Lovat RM132 3.5m-diameter EPB machine has excavated two guide tunnels that form part of an ambitious civil engineering project that will see installation of the UK’s first-ever curved jacked-box structure.

Economical stacked platform solution chosen for BART
23 April, 2020
Bay Area Rapid Transit (BART) and the Santa Clara Valley Transportation Authority (VTA) have agreed on a stacked solution to bring rail services to 1.7m Silicon Valley residents. VTA’s 10km BART Silicon Valley Phase 2 extension project comprises four new stations (three underground, one at grade), an 8km TBM-bored tunnel, as well as storage and maintenance facilities. Agreement has centred around stacked tunnels in stations, as opposed to a less economical twin-tunnel approach.

Hammersmith connection Tunnel
27 March, 2020
The September BTS meeting saw a presentation on the Thames Tideway project’s Hammersmith Connection Tunnel. The talk was presented by Peter Coppenhall of Morgan Sindall, working as the designer’s representative in Thames Tideway West, and Ed Batty of BAM Nuttall, currently working as a Tunnel Manager in the Frogmore Connection Tunnel. This report was prepared for Tunnels and Tunnelling by Rosa Diez, project director for Mott MacDonald

Under the Swan River
27 March, 2020
Alex Conacher travels to the Forrestfield-Airport Link in Perth, Western Australia to speak with Salini Impregilo, NRW project director Richard Graham and tunnel construction manager Carlos Zapico

Ontario Line awards technical advisor contract
03 March, 2020
Ontario – Infrastructure Ontario and Metrolinx have selected the HDR-led team to serve as technical advisor for the approximately CAD 10.9bn (USD 8.1bn) Ontario Line in Toronto, it was announced on March 2. This nearly 16km long, free-standing subway line will be a combination of tunnelled and elevated sections, with 15 proposed stations, running from Ontario Place/Exhibition Place through downtown Toronto to the Ontario Science Centre.