Engineering ResourcesBuilt for Professionals
Access hydraulic calculators, load rating guides, and technical documentation to design and specify drainage systems with confidence.
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Expert Knowledge
Resources developed with input from drainage engineers and industry professionals.
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Tools & Documentation
Professional Engineering Tools
Drainage Calculators
Free hydraulic calculators for drainage system design. Calculate runoff, size trench drains, and analyze flow characteristics with precision tools used by engineers and contractors.
Interactive Classification System
Load Rating Guide
Comprehensive guide to drainage grate load classifications from A15 to F900. Understand testing standards, application requirements, and select the right rating for your project.
CAD Files & Specifications
Technical Documentation
Download CAD files, product specifications, and technical drawings organized by manufacturer. Access the engineering documents you need for your drainage projects.
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Our drainage specialists can help you interpret calculations, select the right products, and ensure your design meets requirements.