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Seattle City Light Installs Slip Resistant Galvanized Steel Vault Covers

The Situation:

Seattle City Light was created in 1902 by the citizens of Seattle to provide affordable and reliable power to the citizens of Seattle as well as the surrounding communities. Seattle City Light provides power to more than 360,000 people in its 131.3 square mile service area. The city decided to place electrical wires underground, and wanted to keep both the wires underneath protected and the pedestrians walking above safe. When it came time to place covers over the vaults in the sidewalk, Seattle determined slip resistance was a concern and decided SlipNOT® non-slip vault covers were the best option.

The Solution:

The SlipNOT® vault covers are custom fabricated to the specifications of Seattle City Lights with a 5/8” lift hole and the word “Electric” permanently cast on the top. The type of surface and the year of manufacture are bead welded on or stamped to the underside. The 5/16” thick x 17” x 28” Grade 3 plates were all galvanized to prevent corrosion from the elements. SlipNOT® steel has a file hard surface between 55 - 63 on the Rockwell “C” scale and has a bond strength of at least 4,000 psi, which provides a long lasting and durable surface.

The Impact:

Seattle City Light has found that SlipNOT® galvanized steel Grip Plate® exceeds the standards of safety for their vault covers, even in wet conditions. With Seattle City Light being a citizen owned company, safety is very important. SlipNOT® slip resistant Grip Plate® provided a long lasting option that the City of Seattle and its residents can count on.

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