BRIDGE HISTORY Listed on the National Register of Historic Places in 1989, the 10th Avenue Bridge in Minneapolis features seven reinforced
concrete arches to span the Mississippi River. The historic 1,141-ft (348 m) open spandrel column arch structure carries over 10,000 vehicles daily, as well as hundreds of pedestrians and cyclists between downtown Minneapolis and an area dominated by the University of Minnesota on the east bank.
UMA to Break NCDOT Record for Largest Square Footage of Soil Nail Wall
UMA is working as a geotechnical subcontractor to a Fluor-led joint venture (JV) with United Infrastructure Group, UMA to Break NCDOT Record for Largest Square Footage of Soil Nail Wall By Brian DeSpain, President, UMA Geotechnical Construction Inc. The project, formally known as NCDOT I-26 Exit 40 to I-40 Interstate Expansion Project, will help to alleviate traffic congestion and improve the safety and operational efficiency of this vital stretch of interstate in the Asheville area.
UMA Corrects Shotcrete Pool Settlement Issues with HDPR Injection
UMA was contacted in January 2021 regarding a residential pool in Winston-Salem, North Carolina that was experiencing settlement issues in the shallow end. Prior to UMA’s involvement, Catawba Valley Engineering & Testing (CVET) conducted soil test borings at the property to determine the in-situ soil conditions.
Outstanding Repair & Rehabilitation Project
Project Name:
Replacement of Flume 4/5/6 and 30
Location:
Pollock Pines, CA
Shotcrete Contractor:
Dees Hennessey, Inc
Architect/Engineer:
GHD Inc
Material Supplier/Manufacturer:
Folsom Ready Mix & The Quikrete Company
Equipment Manufacturer:
REED Concrete Pumps
General Contractor:
Syblon Reid
Project Owner:
El Dorado Irrigation District
Outstanding Underground Project
Project Name:
Exchange Place Station – 9 Car Program West Corridor
Location:
Jersey City, NJ
Shotcrete Contractor:
Patriot Shotcrete, LLC
Architect/Engineer:
WSP USA, Inc.
Material Supplier/Manufacturer:
Eastern Concrete Materials
Equipment Manufacturer:
Western Shotcrete Equipment, Inc.
General Contractor:
Walsh Construction Company II, LLC
Project Owner:
Port Authority of NY NJ
Honorable Mention Project
Project Name:
Pennsylvania Turnpike Commission – Tuscarora Tunnel Rehabilitation
Location:
Burnt Cabins, PA
Shotcrete Contractor:
Mosites Construction Company
Architect/Engineer:
Gannett Fleming Inc.
Material Supplier/Manufacturer:
New Enterprise Stone & Lime Company Inc.
Equipment Manufacturer:
King Shotcrete Equipment, Inc.
General Contractor:
Mosites Construction Company
Project Owner:
Pennsylvania Turnpike Commission
South Wastewater Treatment Plant
I n early September of 2019, Gulf Coast Underground (GCU) received a call from the City of Baton Rouge and their construction manager, Jacobs Engineering Group (JEG). There was an issue at the South Wastewater Treatment Plant that would require a unique contractor skillset to properly repair. The problem was that the cast-in-place influent structures receiving 65 million gallons (246 ML) of sewer flow daily, were corroding and needed to be repaired quickly
Park Avenue Tunnel Rehabilitation
The Park Avenue Tunnel, formerly known as the Murray Hill Tunnel, is a 1,393-foot-long (425 m), 16-foot-wide (5 m), 9-foot-tall (3 m) thoroughfare traversing six New York City blocks. The tunnel was originally constructed in 1837 as an open rock-cut, with a brick arch constructed over the cut in 1854 to create the tunnel profile. For the next 150 years, the tunnel would be plagued with issues ranging from mechanical system failures to liner wall leakage due to the soil volume above, which is where the idea of shotcrete stabilization was introduced within the project scope.
Davis Barracks Sculpted Wall
In 2015, the U.S. Army Corps of Engineering began construction on the Davis Barracks at West Point, NY. The 172 million dollar barracks became a state-of-the-art facility. The new barracks was built to house 650 cadets, three in each room, consisting of 297,392 ft2 (27,629 m2).
The barracks building is located on the side of a mountain, below the cadet chapel, which in of itself is a famous landmark. The site for the barracks posed numerous challenges which included the removal of 285,000 tons (259,000 metric tons) of granite for the building’s foundation. Between 2015 and 2017, during the construction, over
Y Not Try a Double Nozzle System
Although many shotcrete workers “claim” to be capable of placing massive amounts of concrete in a daily shift, or shooting with the pump turned “wide open,” in reality, the nozzleman tends to ultimately be the limiting factor on production speed and daily placement volume. Plain and simple they get tired. Shooting too fast diminishes accuracy and overall quality.