FDOT's supplier contacted SlipNOT® Metal Safety Flooring for a non-slip steel expansion plate. SlipNOT® provided 1/4” x 15” x 97 1/2” Grade 2 steel plates with 7/16” countersunk holes. Steel expansion plates can become extremely slippery under wet conditions, which is why a Grade 2 (Medium) SlipNOT® coating was applied. This provided maximum traction and durability. The steel expansion joints were also supplied with a hot dipped galvanized finish which was a preventative measure to eliminate corrosion and deterioration.
A steel expansion joint is a metal top plate used to bridge between two concrete slabs. Throughout hot and cold weather, concrete may expand and contract, creating cracks and failure. The steel expansion plate is anchored to one slab of concrete allowing for the steel expansion plate to move with the concrete.