Kokosing constructed a dam-raising project for American Electric Power at the Cardinal Plant in Brilliant, Ohio. AEP’s existing fly ash reservoir dam was originally constructed in 1986. The entire 1600-foot-long dam, which sits on a little more than one acre, was raised another 13 feet by constructing back-to-back MSE walls on top of the existing 30-foot-wide crest with a run of VSP installed between the walls. Kokosing also raised the primary and emergency spillway structures. Safety cables were installed along the dam length to protect crews from the very steep side slopes, and Kokosing used a steel guide ahead of the VSP to protect the 3/8-inch thick piling from damage. The Service Spillway was designed to be built using poured concrete walls, but Kokosing offered an alternative precast concrete structure to increase safety and efficiency.
What makes it interesting?
MSE wall panels and VSP had to be installed across the dam at the same time, but since the crane required most of the dam width, crews alternated between 50-foot runs of VSP and then installing MSE panels on both sides. Every piece of piling and wall was kept in a storage yard and brought to the damn as needed due to limited room on the dam itself. Small loaders ferried materials from stockpiles to placement locations.
How HCSS Software assisted with this project
HeavyBid was used for all phases of the estimating and post-bid handoff process, including original cost estimates, budget generation, and post-bid alternative analysis. The notes features and ability to compare self-performed pricing to sub pricing for the same work were invaluable during the post-bid handoff process. Kokosing also uses…