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Create Your Design Using the Contech Design Center

The Contech Design Center enables engineers to accelerate the design process for bridge and stormwater projects, generating project-specific drawings, engineering calculations, and CAD files while collaborating with Contech engineers. This helps reduce design time, ensures regulatory compliance, and improves constructability. 

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Inside view of corrugated metal pipe.
Manhole Connections for Profile Walled PVC Sewer Pipe

Most storm sewers are simply grouted into a manhole using non-shrink grout and a water-stop gasket, when appropriate. Contech has supplied both the “double fluted” and “single fluted” pipe gaskets for the “water-stop”, which is simply used to help the concrete/grout adhere to something other than the very smooth/slick PVC surface.

Inside view of corrugated metal pipe.
Leadership for the Evolving Engineered Construction Industry

Civil engineers face a level of complexity and expectation that continues to rise year after year. Beyond mastery of core engineering principles, today’s professionals must navigate advanced digital design platforms, manage accelerated project timelines, interpret evolving regulatory frameworks, and coordinate seamlessly across multidisciplinary teams. At the same time, they are expected to deliver solutions that balance performance, constructability, sustainability, and cost—often amid tighter budgets and heightened public scrutiny.

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Rectangular rain garden with ornamental grasses, shrubs, and mulch, bordered by concrete and surrounded by young plants.
Biofiltration in Cold Climates: Risks, Realities, and Proven Design Strategies

Biofiltration and bioretention systems are sometimes viewed skeptically in cold climates, where freezing temperatures, snow management, and deicing practices raise concerns about performance and durability. In practice, however, many biofiltration systems operate successfully in cold regions when they are designed with winter conditions in mind. The key is understanding potential cold-climate risks and mitigating them through thoughtful design, operation, and maintenance planning.

Rectangular rain garden with ornamental grasses, shrubs, and mulch, bordered by concrete and surrounded by young plants.
Horizontal-Flow Biofiltration: Expanding the Engineer’s Toolbox for Stormwater Treatment

As urban development intensifies and stormwater regulations grow more complex, engineers are challenged to design treatment systems that perform effectively within constrained site layouts. Engineered biofiltration has long been a proven solution, with vertical-flow systems like Filterra® delivering reliable, high-rate performance in compact sites. Building on that foundation, Contech’s Modular Wetlands® Linear (MWL) uses horizontal-flow technology that addresses hydraulic and spatial challenges, giving engineers even greater flexibility in how they design for water quality.

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