Nelosca can build new or replace existing structures, as well as complete a wide variety of concrete repairs. From mass pours to small surface repairs, our crews can place concrete both above and below the waterline. This includes traditional concrete placement methods, precast attachments, preplaced aggregate concrete, and more.
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From large roller gates to small sluice gates, Nelosca can replace or rehabilitate mechanical water control components of all sizes and designs using innovative and cost effective approaches. This includes total replacement, repairs, and even complete in-place rebuilds.
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Nelosca has rehabilitated several key areas on dam structures requiring precision manufacturing, alignment, and installation. This includes structural steel components such as penstocks, trash racks, and bulkheads, as well as the mechanical equipment that operates them. We have certified welders and millwrights on staff who specialize in working on water control structures.
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Our divers know dams and are experts in underwater construction. As such, they are ideal resources for FERC Part 12 inspections. Nelosca divers will provide detailed reports with the information you need. In addition, we offer several other technologies such as underwater acoustic imaging and high-resolution multi-beam hydrographic surveys that leave little to the imagination.
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Nelosca divers can place concrete, weld, cut, grout, dredge, and accomplish whatever else may be required to keep your structure in good condition. Using divers may result in substantial costs savings by providing alternatives to installing pricey cofferdams. From small repairs, to major construction projects, a well-planned underwater approach could be one of the best options.
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Since the early 1930s Nelosca has been installing cofferdams to carry out water-based construction and repair services. As a contractor that specializes in work around the water, we work with every type of cofferdam out there. Our expertise extends beyond the installation to creating a robust dewatering program to ensure a dry work area.
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Scour and erosion can be the worst enemy of any water-based structures. At Nelosca we offer several repair alternatives that can provide a long lasting solution to undermining, scour, and other embankment degradation. Whether the problem is above or below the waterline, we can deliver a turn-key solution to solve your problem.
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