The science behind the hydraulics of trench drainage is complex, as each system must be adapted to the unique catchment design of the site, and getting it wrong is costly. It can result in safety hazards, increased maintenance costs and, in extreme scenarios, flooding that undermines infrastructure.
This guide explains how simple models can’t capture real hydraulic behaviour and outlines the correct approach. This involves the application of equations based on full-scale laboratory testing.
A breakdown of how drainage grates and channels perform in practice.
The consequences of getting it wrong.
Key considerations when selecting the right hydraulic solution.
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