Search Results: 'Parsons Brinckerhoff'

Antonia Cornaro – Interview
26 June, 2023
Antonia Cornaro is several things: a city planner, an expert in underground space at Amberg Engineering, a university lecturer to engineers, planners and architects, an author and also co-chair of ITACUS. Julian Champkin spoke to her

Election year
31 October, 2016
Tunnel work in the US has seen support from voters in some local elections and possibly more this November. Nicole Robinson, editor of Tunnels and Tunnelling North America highlights tunnel projects across the country

WTC 2016
01 April, 2016
Registration is open for the worldwide tunnelling event of the year, with as many as 600 unique technical presentations, short courses and breakout sessions, and more than 200 exhibitors from around the world. Here’s a look at the highlights planned for this year’s conference and be sure to visit Tunnels & Tunnelling at Booth 1215 at this year’s WTC in San Francisco.

Rapid response
13 August, 2015
Ground freezing in Washington, D.C., will reduce the effects of construction on a quiet neighborhood prone to flooding. Nicole Robinson reports on the First Street Tunnel.

Float on
24 June, 2015
The JV constructing the new Midtown Tunnel has floated and immersed more than half the elements in the Elizabeth River, bringing each one more than 200 miles through the Chesapeake Bay, Nicole Robinson reports.

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

How the west was won
27 June, 2014
Tunnelling work is as diverse and plentiful as the geography in the West Coast.

Cable guy
10 October, 2013
A new cable tunnel has gone seemingly without a hitch in the Willesden/harlesden neighbourhoods of North London. Alex Conacher tours the site with Murphy’s tunnelling project manager Keith Pollard.

Blast Security and Protection
20 June, 2013
The security of tunnels against potential detonated explosions from within and outside the tunnel structure is a main challenge facing to owners and operators of tunnel systems, particularly those used for vehicle or rail traffic. This paper by Sunghoon Choi of Parsons Brinckerhoff USA introduces a design practice recently developed for protecting underground structures from explosion in the US.

Blast Protection Design
27 February, 2013
The security of tunnels against potential detonated explosions from within and outside the tunnel structure is a main challenge facing to owners and operators of tunnel systems, particularly those used for vehicle or rail traffic. This paper by Sunghoon Choi of Parsons Brinckerhoff USA introduces a design practice recently developed for protecting underground structures from explosion in USA

Northern Exposure
19 February, 2013
While Seattle is known for its grey drizzly days, the climate for tunnelling is all blue skies. Sound Transit will bid another major tunnelling contract for its regional mass transit system this March, Nicole Robinson reports

Sinking the future
23 November, 2012
Plans for a new immersed tube tunnel in Virginia are moving forward, Nicole Robinson looks at the design of the new Midtown Tunnel

Immersed in planning
19 December, 2011
Plans for a new immersed tube tunnel in Virginia are underway and the contractual agreement to build it is near. Nicole Robinson looks into the design of the new Midtown Tunnel

The tale of three cities
10 June, 2011
The market for tunnelling in North America is strong but also struggling due to political and financial pressures, and more recently public outcry. Nicole Robinson profiles tunnelling projects in New York, Seattle and Toronto

Coasting along
13 April, 2011
As clients deal with financial constraints, the tunneling industry in the East Coast region may see limited growth over the next few years. But with all of the work in New York, plus clean water regulations elsewhere, the market should hold steady, Nicole Robinson finds

Working on the west side
29 November, 2010
This summer saw a major milestone for the No. 7 Line Extension project, with the final breakthrough of the two TBMs mining the twin subway tunnels. Nicole Robinson looks into the project and its progress

Never so bored in NY
12 August, 2010
New York’s East Side Access (ESA) rail project has used a pair of TBMs to help cavern construction by lancing repeatedly into the rock below Manhattan. Report by Patrick Reynolds

Probing the 710 freeway
24 March, 2010
Tunnel options are being evaluated following extensive site investigation for the ‘missing link’ section of California’s 710 freeway reports Patrick Reynolds

Powering in Portland
29 September, 2008
Slurry excavation is progressing for the East Side CSO, in Portland. T&TNA recently visited the site to discuss the impressive advance rates being achieved

Sound Transit’s large-scale SEM station
05 June, 2008
Beacon Hill Station, in Seattle, comprises the largest SEM soft ground excavations in the US to date. Jürgen Laubbichler, of Dr G Sauer Corporation, describes their design and construction in highly variable soils with multiple groundwater horizons