Search Results: 'Healy'

Clean hat trick
24 November, 2022
Nicholson Construction has had three contracts for Project Clean Lake in Ohio, and each has posed its challenges. Keren Fallwell reports

Mitigation not litigation
16 May, 2016
On August 21, 2013, amidst a crowd of proud team members, "Mackenzie", the 1,500- ton (1,361 metric tons) Herrenknecht TBM completed its journey and broke into Shaft 5 of the Northeast Ohio Regional Sewer District's Euclid Creek Tunnel. Two years later the project is now in site-restoration and the NEORSD can reflect on what has become known as one of the most successful projects in their storied 43-year history. Michael Vitale of Hatch Mott MacDonald and Doug Gabriel of NEORSD report

The next step
31 December, 2015
To complete 20 miles of tunnels in 25 years and meet its consent decrees with the EPA the NEORSD is moving forward with its next project, the Dugway Tunnel, with several more to follow. Nicole Robinson reports

Mitigation not litigation
31 December, 2015
On August 21, 2013, amidst a crowd of proud team members, "Mackenzie", the 1,500- ton (1,361 metric tons) Herrenknecht TBM completed its journey and broke into Shaft 5 of the Northeast Ohio Regional Sewer District's Euclid Creek Tunnel. Two years later the project is now in site-restoration and the NEORSD can reflect on what has become known as one of the most successful projects in their storied 43-year history. Michael Vitale of Hatch Mott MacDonald and Doug Gabriel of NEORSD report

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

South by Southwest
12 December, 2013
The southern states grapple with water supply as drought conditions worsen and stormwater from flash floods cause damage for homes and businesses

Seattle Surge
19 February, 2013
The west coast of the US is home to a strong tunnelling market. Tunnels North America looks at Seattle in particular this issue, but let there be no doubt, other cities in the region are just as busy underground, Nicole Robinson reports

Lake Mead draws deep
13 June, 2012
With ever lowering water levels, tunnels are needed to reach deeper into the largest reservoir in the US to slake the thirst of Las Vegas. Technical journalist Rhian Owen meets the team that will stand the House a drink

West Coast calls for funds
21 May, 2012
West Coast tunneling is buzzing with activity, though lack of funding is keeping projects in concept design. Rhian Owen speaks with Randy Essex of Hatch Mott MacDonald

From sea to shining sea
06 February, 2012
Demand for tunnels in North America is strong to meet public transportation and water conveyance needs. Nicole Robinson highlights projects in the region

Stay in the tunnel
18 October, 2011

Long tunnels for the Longhorn state
15 August, 2011
In the southwest, Texas is making work in a region not known for big tunnelling projects, Nicole Robinson reports

Stubborn to a fault
10 June, 2011
Construction of Intake No. Three at Lake Mead, Nevada, requires tunnelling beneath the lake and blasting at Saddle Island. With a deadline driven by the region’s drought conditions and drinking water at stake, progress on the project’s longest tunnel has been marred by a fault near the starter tunnels as Nicole Robinson reports from site

In the mix on site
11 February, 2011
There are many considerations when deciding how to supply the concrete necessary for lining and support in most tunnelling projects. Not least of these are how to source large volumes of material on site, and to deliver it to the location of use. With usually restricted surface space, and often long transport distances, this is no easy task. Maurice Jones checks on some developments to make it easier

Home run for river clean up
03 August, 2010
Portland, Oregon has had more than its fair share of tunnelling work in recent years, all geared to improving the quality of its waterways particularly the Willamette River. A key and largest stage in this programme has been the East Side Combined Sewer Overflow Tunnel Project, which is now approaching its conclusion after passing several milestones in the development of North American tunnelling. Maurice Jones reports.

2008 Beavers Award Winners
29 April, 2008
Just over 2,100 Beaver members and guests attended the 53rd Annual Golden Beavers Awards Dinner in Los Angeles, on January 18.

Groundwater inflow into Hard Rock Tunnels
22 September, 2001
Jack Raymer, PG, points out that permeability is best evaluated as a statistical distribution for accurate groundwater inflow estimation. The Chattahoochie Tunnel in Cobb County, Georgia, US is taken as an example using packer tests on boreholes along the tunnel alignment.