Search Results: 'Wayss & Freytag'

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Low carbon for Silvertown
03 August, 2022
Silvertown road tunnel in London will use mostly fibre-reinforced concrete with GGBS for segmental lining, reports Patrick Reynolds

Tunneller, lawyer and inventor
17 March, 2022
John Bartlett was a founder member/chairman of the British Tunnelling Society. He invented the bentonite tunnelling machine, designed the UK stretch of the Channel Tunnel and provided critical input into many other projects. Julian Champkin offers this appreciation of his life

Digital drive
29 October, 2021
Digital technology promises multiple benefits and is making huge inroads in many sectors but its take-up in tunnelling and other infrastructure projects is still at relatively early stages. Report by Patrick Reynolds

Factory for Fehmarn
27 July, 2021
Main construction has started at Fehmarn for the world’s longest immersed tube tunnel. Report by Patrick Reynolds

West Link’s Korsvagen Challenges
29 January, 2021
Dr Klaus Rieker of Wayss & Freytag Ingenierbau discusses the various construction techniques and procurement methods used for tunnelling the Korsvägen Section of Gothenburg’s new West Link rail line

Northern exposure
27 September, 2019
A round-up of tunnel work in the Nordic Forum

Under the sea
04 June, 2019
Paola De Pascali spoke with Henrik Christensen, Femern technical director to explore logistics and dredging challenges behind the Fehmarnbelt tunnel

Nordic Neighbors
03 November, 2016
The ITA’s Nordic Forum provides an opportunity for canada and other nations to exchange information. Tunnels & Tunnelling looks at projects underway in the region

Prague Metro
05 April, 2013
Ermin Stehlik and Vaclav Soukup of Metrostav are presenting the keynote talk‚ 'Prague Metro construction – past, present and future' at UC Prague 2013. This comprehensive three-part article covers Prague Metro construction from its beginnings in 1966 up to the present and into future plans. Early construction covered in this, the first part, was affected by the political situation, with the start of construction based on imported Soviet technologies.

Powering up at Linthal-Limmern
14 March, 2011
The topography of alpine and similar mountainous areas presents both many challenges and opportunities for tunnelling engineers. Whereas the current focus has naturally been on rail base-tunnels, the business of constructing and expanding hydropower facilities continues apace. Maurice Jones summarises recent developments at the Linthal-Limmern hydropower complex

From woe to go
30 January, 2009
Barbara Stack, author of the Encyclopaedia of Tunnelling, Mining & Drilling Equipment, describes the birth of recessed and back loading cutters

The making of the Mixshield - Part 1
05 June, 2008
In the first of a two-part series, Werner Burger, head of design and engineering, and Gerhard Wehrmeyer, director of traffic tunnelling, for Herrenknecht AG, examine the development of the modern Mixshield

High-tech conveyor solutions
06 May, 2008
Hi-tech tunnel conveying systems can offer unique solutions to complex site and transport logistics. Deputy editor, Amanda Foley, looks at some recent projects case histories

Lining & Support Products
01 August, 2003
The latest lining and support products

Two birds with one stone
01 May, 2003

Negotiating the North Eastern Line
01 December, 2002
An underground journey in Singapore opened the new season of BTS meetings in London in September 2002, with a presentation from Peter Chiappa, area manager Asia Pacific, and Wolfgang Freitzsche, managing director, of Wayss & Freytag Ingenieurbau AG, detailing the demanding requirements, troublesome ground conditions and ultimate resounding success of Contract 704 on the State's new North Eastern Line (NEL) metro

Blasting above the Brandleite
01 July, 2002
When completed in spring 2003 the Rennsteig tunnel, at 7.9km, will be the longest highway tunnel in Germany. The twin tube tunnel is the most expensive element of the new A71/A73 highway, connecting Erfurt with Schweinfurt and included crossing the 112 year old Brandleite railway tunnel with only 6m of cover. G. Denzer of DEGES and R. Maidl, Ingenieurbüro Prof. Dr.-Ing. B. Maidl - Dipl.-Ing. R. Maidl, describe the project

Speeding up the SWISS RAIL network
02 May, 2001
The 3.1km Önzberg tunnel in Switzerland is part of the country's Bahn 2000 project, a major investment programme aimed at improving intercity rail services. Work currently is on to complete shotcrete supported excavations.

In at the deep end
05 January, 2001
The Netherlands has adopted large-diameter TBM work for soft ground tunnels with great enthusiasm. No where is this more evident than in the Westerschelde tunnel project where modern technology is set to open the relatively isolated Zeeuwsch-Vlaanderen province. However, such a challenging project has not been without its snags.

Determination to overcome difficulties
01 August, 2000
No stranger to meeting difficulties the tunnelling industry was presented with plenty during the past year.