RAILWAY CONSTRUCTION, Fairfield Metro Center, Fairfield, CT

SCOPE OF WORK:
To drill and blast approximately 90,000 yards of mass rock and 4,000 yards of structure rock for a new train station parking lot and future building pad.

CHALLENGE:
The blasting was located anywhere from 400 feet to 20 feet from the tracks. There were 45-foot cuts within 100 feet of the tracks. There were 30-foot cuts within 12 feet of a new bridge abutment. All of the work had to take place without any disturbance to the train traffic. In this area of Connecticut, an estimated 225-250 trains pass by daily. Obviously, all work had to be done without damaging any of Metro-North's structures, UI's towers, or the new bridge.

SCHEDULE:
The blasting schedule was driven by concrete being poured on the site. There were two separate general contractors working on the site with different agendas and working in different areas. This required certain areas of the job to blasted by specific dates. Because blasting was not allowed within 300 feet of fresh concrete, we had to have multiple areas ready to blast, changing from day to day depending on where the two companies were pouring.

OUTCOME-SUMMARY:
As we reach the 70% completion milestone, operations have been incident free and performing better then anticipated.

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I-90  FIX, Little Falls, NY

SCOPE OF WORK:
The throughway wanted the rock slope stabilized back to the foundation for the radio tower, without impeding traffic.

CHALLENGE:
To fragment the rock so that it could be dug without breaking it to a degree that it would slump into the roadway.

OUTCOME:
We delivered a stable face through careful pre-splitting, excellent drilling parameters and minimal fragmentation.

SCHEDULE:
The MD&B team finished 30% (20 days) ahead of schedule.

SUMMARY:
The throughway geotechnical experts knew what was important, and were pleased that we could provide that end product.

RESIDENTIAL DEVELOPMENT, Hingham Shipyard, MA

SCOPE OF WORK:
All roads, utilities, and foundations for a cluster community placed in an abandoned shipyard.

CHALLENGE:

• Drill and blast in close proximity to major retail and residential users.
• The schedule demanded greater production than is usually associated with work this close to abutters.

OUTCOME:
Fragmentation and production allowed the contractors to meet all their goals.

SCHEDULE:
Built on the customer’s aggressive schedule.

SUMMARY:
Continuous blast design modifications encourage improvements.

ROYAL BANK OF SCOTLAND, Stamford, CT

SCOPE OF WORK:
The location was situated between I95 and all the hi-rises in Stamford. We were charged with blasting for the foundations with stable side slopes because urban work didn’t allow ramps into the site.

CHALLENGE:
To have sound rock at all the footing pads.  This required many different elevations and geometries for the foundation layouts.

OUTCOME:
The outcome was a successful project.

SCHEDULE:
The schedule was met.

SUMMARY:
Differing foundation requirements demand detailed blasting methods to avoid over-breakage or high rock.