A client contacted Clark Engineers to review the design and to provide any required modifications to eight unique FRP metering stations. The metering stations had both flat bottoms and two flat sides. It was determined that the thickness required to control bending and stress in the flat section was greater than manufacturing constraints would allow.

The client had planned on encasing the metering station in un-reinforced concrete, however this was found to be inadequate. Clark Engineers developed a design using the reinforced concrete to provide the required stiffness. FRP stiffeners were added to the flat sides with a grid of reinforcing steel running through them and in front of them.