Search Results: 'Perini'

The Seattle Saga
27 June, 2014
After six months of tunnelling standstill, construction is tarting on an access shaft to repair the TBM mining the SR 99 bore in Seattle, the largest diameter machine in the world. Nicole Robinson explores the machine’s initial journey and downtime.

Crossing the tracks
27 June, 2014
San Francisco’s Central Subway moves below rail lines, utilities and more, Desiree Willis of Robbins reports.

On the high road
19 March, 2014
Roadheaders, the underdog of the tunnelling industry, have secured their place as an economical and variable excavation tool, ideal for short drives and changing ground. Technical journalist Rhian Owen examines the principles.

In the nick of time
19 March, 2014
As the Hudson Yards development moved toward construction, a small window of opportunity for new rail infrastructure connecting New Jersey to Manhattan began to close. Nicole Robinson looks at the tunnel box project securing the right of way for potential tunnels under the Hudson River.