TYLin developed plans and contract documents for the rehabilitation of Movable Dam 10 at Lock 14 on the Mohawk River - Barge Canal in Canajoharie, New York.
Dam 10 consists of twin 216-foot steel trusses supporting 15 vertical lift gates. Constructed in 1914 with modifications added in 1924, the dam was severely deteriorated. TYLin worked with the New York State Thruway Authority Canal Corp to rehabilitate the structure.
Detailed inspection of the dam consisted of ultrasonic thickness measurements to determine the extent of steel deterioration and concrete coring to establish the depth of concrete deterioration. After the inspection, structural analysis was performed to determine which elements of the dam would require replacement or remediation.
Remediation and repairs were required for the structural steel superstructure, gate operating machinery, and substructure units and concrete aprons.
In addition to the structural repairs, the project also involved the preparation of a detailed Cofferdam Impact Analysis to determine flooding impacts to upstream communities.
- An investigation was performed for hazardous waste and contaminated materials (HWCM), asbestos, lead, and impacts to threatened and endangered wildlife species.
- Barge-mounted drilling rigs were used to perform the geotechnical investigations.
- A detailed Hydrologic Engineering Center's (CEIWR-HEC) River Analysis System (HEC-RAS) model was developed of the area.
- Rehabilitation and inspection
- Conditions assessment
- Environmental services
- Construction inspection
- Seismic analysis
- Dam safety analysis
- Structural engineering
- Construction engineering
- Electrical and control systems
- Cranes and special lifting fixtures