| CONTENTS


Wide-span NATM excavation underway on one of the twin-tube tunnels on a highway project in India Image courtesy of Bedi Consulting


10 Comment 3 REGULARS 7 News 42 Events


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26 20 34 August 2026 | 5 34


Conventional


NATM in weak rock Ramnath Arumugam, Bedi Consulting


Design, construction and risk management for twin, large span NATM tunnels in weak rock for a major highway project in India. The paper was presented in the 2026 BTS Harding Prize Competition.


ITA guidance T&TI


Briefing on an ITA report on the design and construction of conventional tunnelling works in urban settings, where the technique is being employed more as cities grow and more transport infrastructure is needed


Transport Insight


Rail, Metro projects T&TI


Insight from on the project pipelines of rail and metro investment, from T&T owner GlobalData. Focus on UK and Europe, in worldwide context.


Sustainability Alun Thomas, Metroselskabet Jon Banyai, Metroselskabet


Carbon management on the expanding underground metro network in Copenhagen, as presented to a BTS meeting by the asset owner and developer.


Interview


Mike McConnell Julian Champkin, T&TI Mike McConnell discusses his long career with many successes and insights - and offers advice to young engineers.


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