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Chelsea to Battersea tunnel surface settlements
16 August, 2019
Monitoring of ground surface movements induced by the construction of the Chelsea to Battersea Pipeline Tunnel project is presented as part of this case study. The surface settlements induced by the shaft construction have been analysed and compared with current methodologies and information from recent projects. Movements from excavation and construction of the tunnel are also analysed, and back-analysis of volume losses is presented. The authors are Veriuska Ortiz Lovera, geotechnical engineer, Mott MacDonald; Andrew Hejdner, project manager, Cadent Gas; James McCaffrey, construction manager, Skanska UK Construction; and Mohammad Arasteh, senior tunnel engineer, Mott MacDonald

Planning for the twenties
14 August, 2019
In this issue of Tunnels and Tunnelling International Paola De Pascali reports from the World Tunnel Congress, which was held in Naples in May and saw a number of publications from working groups and committees. The ITA Committee for Technology (ITAtech was particularly prolific.

AI targeted to assist project management
31 July, 2019
International – A group of consultants have banded together in the hopes of using AI to prevent cost overruns on major projects. The companies, Mott MacDonald, Endeavour Programme and WT Partnership have formed what they call a ‘global technology alliance’ to achieve this. WT is a cost management consultancy and Endeavour is an Australian technology firm.

A digital twin
08 July, 2019
Digitalisation offers a variety of new possibilities. One of them is the modelling of infrastructure with Building Information Modelling (BIM). Digital technology is a core element for the simplification of processes and for automation. This also applies to already-built infrastructure, as the RetroBIM project launched by Amberg demonstrates. Pedro Luis Iserte Llacer, head of BIM at Amberg and Roger Schaad, marketing specialist at Amberg discuss the project

Deepest and Longest
07 May, 2019
Yves Boissonnas, head of tunnelling at Sika Europe Management, the guest speaker at the January BTS lecture, provided a presentation on the Gotthard Base Tunnel

TAP project secures funding
27 February, 2019
Italy – The Trans Adriatic Pipeline (TAP), an EUR 3.9bn (USD 4.43bn) natural gas pipeline project in the eastern Mediterranean, has been granted full funding. Mott MacDonald was the lenders’ technical advisor on the project and performed technical due diligence on TAP’s design, construction and operational plans.

HRBT team to build Virginia extension
18 February, 2019
US – Virginia governor Ralph Northam announced February 15 that the Commonwealth of Virginia has selected Hampton Roads Connector Partners, a design-build team, to deliver the Hampton Roads Bridge-Tunnel (HRBT) Expansion Project. The fixed price (USD 3.3bn) and fixed completion date (November 1, 2025) contract is expected to be executed in April.

Mott MacDonald makes high-level changes
13 February, 2019
International – Mott MacDonald has appointed Paul Hammond as global practice leader for its new Infrastructure Development and Economics practice; Anne Kerr as new managing director for Greater China; and Liz King as managing director for Africa.

Chelsea-Battersea tunnel nears completion
10 December, 2018
Great Britain – Work on a new tunnel under the River Thames project in Battersea Park is nearing completion. Costing GBP 18M (22.9M USD), the 330m-long tunnel will transport gas under the Thames between Chelsea and Battersea in West London. Owned by gas distribution company Cadent, the tunnel forms part of a GBP 1bn programme to replace ageing infrastructure in the UK’s capital.

Steering the ship
21 September, 2018
Alex Conacher speaks with Mark Leggett of Mott MacDonald as he takes the immediate past chair position at the British Tunnelling Society and looks back on his two years at the helm

Finsbury park square works
16 May, 2018
The November BTS talk describes the square works for Finsbury Park and was presented by three speakers; Farid Acha, lead tunnel engineer for London Underground; John Elliot, director of underground infrastructure for Golder, and Menelaos Lydakis, chartered engineer and project manager of Spencer Group. The talk gives an insight into the scheme design of the project, detailed design and how it was finally implemented during the construction of the scheme. This report was prepared by Rosa Diez of Mott MacDonald

Crossrail SCL Design
26 March, 2018
Mott MacDonald project director Rosa Diez looks at the work required for Crossrail’s contract C121 – sprayed concrete lining design

ORD Express rail RFQ responses announced
14 February, 2018
USA - Chicago mayor Rahm Emanuel announced February 7 the Chicago Infrastructure Trust (CIT) received four responses to the RFQ to design, build, finance, operate and maintain the O’Hare Express operating system.

Breakthrough on West London gas tunnel
04 January, 2018
Great Britain - A 330m-long tunnel from London’s Chelsea to Battersea Park has broken through. Owned by gas distribution company Cadent, the tunnel forms part of a GBP 1bn programme to replace ageing infrastructure.

Cavern configuration
26 December, 2017
The largest tunnelled excavation in Los Angeles, part of the Regional Connector Transit Corridor, will be constructed at relatively shallow depth below existing infrastructure including significant utilities and historic buildings in a seismically active area. Carlos Herranz, Zsolt Horvath, Justin Liandes and Derek Penrice of Mott MacDonald describe the approaches taken to mitigate this design and construction risk

Breakthrough on the Northern Line Extension
23 November, 2017
Great Britain - The two TBMs mining the Northern Line Extension project in London have broken through. Launched in February 2017, the two 6m-diameter EPBMs bored twin 3.2km tunnels running from Battersea to Kennington, with the second breakthrough taking place on 8 November.

Cambridge service tunnel
02 November, 2017
AstraZeneca’s global R&D headquarters in Cambridge calls for a new tunnel. This report from a BTSYM presentation by Lloyd Rew of Skanska was written by Cameron Blackwell from Mott MacDonald

Fragrant Harbour
02 November, 2017
Keren Fallwell speaks with expat engineers living in Hong Kong to get a handle on the market

Next exit
06 July, 2017
The Eglinton Crosstown LRT is Ontario’s largest transit expansion to date. Two contracts constructed 10km of underground alignment for the 19km line. Jordan Schreiner and Matthew Geary of Hatch, with Tibor Szekely of Metrolinx, discuss the completion of the East Tunnels and TBM removal

Branch to battersea
29 June, 2017
Paola De Pascali met TFL senior project manager Mark Thompson and FLO engineeringmanager, Oliver Newman to talk about the Northern Line Extension project