36 Inch Corrugated Polyethylene Outfall Pipe
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36 Inch Corrugated Polyethylene Outfall Pipe
→ Resources → Case Studies
Market
Private Industry
Challenge
The joints of a 36 inch corrugated polyethylene outfall pipe had become separated due to increasing soil and live loads. Eliminating the infiltration without disrupting the traffic flow raised concerns. The preferred method of repair was to eliminate the infiltration without interrupting traffic flow.
Engineered Solution
The project utilized HydraTech’s HydraTite Internal Pipe Joint Seals to address the leaking joints in the stormwater retention tanks. Specifically, 42 standard-wide and 3 extra-wide HydraTite seals were custom-fabricated for the 94.5” corrugated steel circular pipes, as this size was not part of HydraTech’s standard inventory. Each seal was secured with three retaining bands to ensure a tight, durable fit. For areas with less extensive damage, gel injections were employed as a repair method to address minor compromised points, providing a comprehensive approach to the restoration.
Scope
The project encompassed the repair of six stormwater retention tanks within 94.5” corrugated steel pipes. The scope included the custom fabrication of 45 HydraTite seals (42 standard-wide and 3 extra-wide), each installed with three retaining bands, and the application of gel injections for less severe damage points. Before seal installation, the corrugated pipe surfaces were filled at the repair areas to create a smooth sealing surface, as required for proper HydraTite performance. Once the voids were filled, the rubber sleeve was placed over each repair point, the retaining bands were expanded to the specified pressure, and locked in place with a wedge, finishing the installation. Ciaran Gaughan was the foreman who oversaw the four-man crew for this installation. The entire project took 25 days, 20 of which were spent installing HydraTite seals.
Solution
HydraTech was able to make the repair on site, which saved the owner the expense of excavation and replacement which would have resulted in a very costly repair. The HydraTite seal proved to be a fast and economical in situ repair solution.
