The century-old Prairie du Sac Dam in Wisconsin was constructed on 12,000 timber piles. Over time, the piles began to deteriorate as the tailwater receded. Nicholson was awarded the remediation contract as the General Contractor and installed close to 1,000 micropiles in varying orientations and loading
combinations through the dam and constructed a reinforced concrete transfer beam as a means of permanently supporting the structure.
A private client contracted Nicholson to install temporary support of excavation for a massive new Vision Rehabilitation Institute’s basement foundations and underground parking. Nicholson was the
design-build geotechnical contractor on the job, which required the excavation of a full city block near an active emergency room to which access could not be blocked.
Post-tension anchors were selected to repair a 65-foot long by two-inch wide crack that spanned the length of one of Wanapum Dam’s monoliths. The entire drilling, grouting and anchor tensioning processes were performed with the assistance of divers using remote cameras to allow engineers at the surface to witness the underwater operations.
Teamed up with sister company Soletanche Bachy Canada, Nicholson provided a design-build solution
to stabilize part of the Canadian National Railway’s railbed that was affected by a relic landslide. The landslide had been moving for the past 50 years and efforts to stop the movement around CN’s railbed
had been going on for more than a decade. Nicholson’s solution, a combination of micropiles and
anchors, brought the previous efforts to stabilize the railbed to an end successfully.
Post-tension anchors were selected to repair a 65-foot long by two-inch wide crack that spanned the length of one of Wanapum Dam’s monoliths. The entire drilling, grouting and anchor tensioning processes were performed with the assistance of divers using remote cameras to allow engineers at the surface to witness the underwater operations.
Post-tension anchors were selected to repair a 65-foot long by two-inch wide crack that spanned the length of one of Wanapum Dam’s monoliths. The entire drilling, grouting and anchor tensioning processes were performed with the assistance of divers using remote cameras to allow engineers at the surface to witness the underwater operations.
Nicholson was awarded the design-build contract to replace an existing force main from the Virginia Key Central District Wastewater Treatment Plant (CDWWTP) under Biscayne Bay Norris Cut to Fisher Island. The contract included the planning, engineering, design, permitting, procurement, construction/installation, testing and the start-up of the replacement force main.
After a massive fire destroyed everything but the exterior façade, the Church of Jesus Christ of Latter Day Saints decided to restore a historic Tabernacle in Provo, Utah, and convert it into a Temple in the process. Nicholson was tasked with developing and constructing an elaborate underpinning system so that two levels of basement could be constructed below the structure. The work also included the construction of a support of excavation system around the entire complex and a ground water and cutoff wall and dewater system.
After a massive fire destroyed everything but the exterior façade, the Church of Jesus Christ of Latter Day Saints decided to restore a historic Tabernacle in Provo, Utah, and convert it into a Temple in the process. Nicholson was tasked with developing and constructing an elaborate underpinning system so that two levels of basement could be constructed below the structure. The work also included the construction of a support of excavation system around the entire complex and a ground water and cutoff wall and dewater system.
Nicholson installed a mortar grout mix to fill voids in rock layer 7 ahead of the TBM operations in some of the most unpredictable ground conditions in the country for the Port Miami Tunnel Project (POMT.) Grout was installed onshore at Watson Island and Dodge Island using up to three drills and off shore on the Government Cut channel between the two islands with up to ten barges and leads, working 24 hour shifts around the active cruise ship schedule.
Approximately 154,000 square feet of diaphragm wall was constructed top-down to support Columbia University’s Manhattanville Development in Harlem, New York City.
Approximately 154,000 square feet of diaphragm wall was constructed top-down to support Columbia University’s Manhattanville Development in Harlem, New York City.
Nicholson installed 14,000 linear feet of grout curtain around the McCook Reservoir for the combined sewer overflow (CSO) system. The entire grouting process was computerized through the use of GROUT I.T., a state-of-the-art computerized grouting control and data collection system developed by Nicholson’s parent company, Soletanche Bachy. At the time, the McCook Reservoir project was the largest computerized grouting project in the country.
Nicholson constructed a 50-foot-high cantilevered retaining wall with barrettes for the Abingdon Heights Condominium Tower in Arlington, VA. This is believed to be the tallest top-down cantilevered wall in the world.
Nicholson constructed a 50-foot-high cantilevered retaining wall with barrettes for the Abingdon Heights Condominium Tower in Arlington, VA. This is believed to be the tallest top-down cantilevered wall in the world.
Nicholson performed extensive geotechnical work at the WTC Transportation Hub, including jet grouting and micropile installation through and under the active #1 Subway Line.
Nicholson constructed a diaphragm wall support of excavation system for the U.S. Capitol Visitor Center project in Washington, DC.
Nicholson constructed a diaphragm wall support of excavation system for the U.S. Capitol Visitor Center project in Washington, DC.
A Nicholson-led joint venture installed nearly 1,000 anchors to stabilize the World Trade Center bathtub and facilitate recovery efforts.
Nicholson installed 536 micropiles at the Mandalay Bay Hotel & Casino in Las Vegas to stabilize the structure, which had settled as much as 18 inches prior to opening.
Nicholson installed 536 micropiles at the Mandalay Bay Hotel & Casino in Las Vegas to stabilize the structure, which had settled as much as 18 inches prior to opening.
Nicholson installed 58-strand, 320-foot long anchors at Lake Lynn Dam in West Virginia. At the time, these were the largest and longest anchors installed in the United States.
Nicholson installed 53-strand anchors at Shepaug Dam in Connecticut. At the time, these were the largest anchors in the United States.
Nicholson installed 53-strand anchors at Shepaug Dam in Connecticut. At the time, these were the largest anchors in the United States.
Nicholson was founded by Arthur Nicholson in Pittsburgh, PA. Nicholson operated as a regional pile driving company before evolving into a full-service structural support geotechnical contractor in the late 1960s.
