- Kerr Dam Gate Repairs
The Grand River Dam Authority (GRDA) is an Oklahoma state agency that owns and operates three hydropower projects on the Grand River in northeastern Oklahoma. One of these projects, Markham Ferry, includes the Robert S. Kerr Dam (Kerr Dam), which is near Locust Grove, Oklahoma. Kerr Dam has a gated spillway with 17 radial (tainter) gates for flow control. Since the dam was built, operators have reported that spillway gates 1 and 17 would bind when raised above approximately the halfway point. These gates could be forced open but doing so would damage the concrete piers on both sides of the gates, at which point the gates might become wedged between the piers and refuse to close.
Burns & McDonnell conducted an analysis to identify the cause of the binding, with a survey confirming that the piers were out of plumb. Further research provided evidence that the leaning was part of the original construction and was not caused by expanding concrete. Burns & McDonnell developed plans and specifications first for the repair of Gate 1. When that was complete, it served as a successful demonstration. A similar project was then completed on Gate 17.
- Structural engineering
- Construction phase services