Search Results: 'Wirth'

Micro modifications give macro improvements
12 December, 2000
After over 15 years of development, microtunnelling is now practically a mature technology but some improvements are still being made.

Genoa tunnel to restart
13 November, 2000

Troubled Sydney project makes final breakthrough
29 September, 2000

Manufacturers go for more used plant
10 August, 2000
Tight margins for the tunnelling industry mean that good quality used and/or refurbished plant is an attractive proposition. Major manufacturers of new plant are now taking an increased interest in this market – if there is money to be made. Maurice Jones reports on the trend.

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

The cutting edge of cost control
11 June, 2000
Although any moving part used in tunnelling can wear out in time, the term "consumables" has been applied to those parts and materials, not forming part of the tunnel fabric, which are used in substantial quantities during construction. "T&T International" technical editor Maurice Jones, reviews the nature of tunnelling consumables and some current topics.

JLE and the lessons from Heathrow
11 June, 2000
At the March meeting of the British Tunnelling Association, construction and redesigns of the Jubilee Line Extension (JLE) stations at London Bridge were described Taylor Woodrow's John Wallis and David Sharrocks, and at Waterloo and Westminster by Peter South of AMEC and Steve Parker of Balfour Beatty. Valuable lessons had been learnt from the Heathrow collapse.

Symposium provides gateway to China
06 June, 2000

T&TI in China
30 April, 2000

Jubilee Line Extension - Contract 102
30 March, 2000
Laura Smith of Balfour Beatty submitted a paper on Contract 102 of the Jubilee Line Extension in London - construction of the eastbound Westminster Station tunnel - for the 1999 British Tunnelling Society's Harding Prize for young engineers. She succeeded in becoming one of the runners up.

State of the art in China today
30 March, 2000
Mainland China is increasingly adopting western technology to build extensive new infrastruc-ture. Xuanyuan Xiaowen (China Engineering Corporation) and Yan Jinxiu (Southwest Research Institute, China Academy of Railway Sciences) examine the strides made in the past 50 years.

Wirth buys Soltau
30 March, 2000