Submerged Square Culvert

Submerged Square Culvert

Market

Water/Utilities

Challenge

A water treatment plant in western Ohio was confronted with repairing leaks of costly treated water from an underground transfer chamber without draining the system.

A diver lowering himself into a square culvert

Engineered Solution

Custom-manufactured NSF61 HydraTite® Extra Wide Seals were selected as a solution. The HydraTite® seal, which is typically used to repair joints in pipe and elliptical conduits, was custom-designed to accommodate the inside corners and straight surfaces of the rectangular transfer chambers.

Scope

During an inspection performed by divers, a total of five (5) construction joints in various reinforced concrete transfer chambers were identified as the sources of the leaks. The corners of the square cross-section chambers required prefabricated stainless steel forms to produce the required radius. The straight sections of the HydraTite® seal are equipped with anchor clips.

HydraTite Internal Pipe Joint Seal Being Installed By A Diver In A Submerged Square Culvert
A Diver Applying Epoxy To The Outer Edge Of The HydraTite Seal Installed In A Submerged Box Culvert

Solution

Divers, after training on the installation of the HydraTite® seal, prepared deteriorated surface areas on either side of the joints and installed the HydraTite® seals with the furnished stainless steel forms and anchor clips.

A HydraTite seal installed in a submerged square culvert