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Insights on Hydraulic Engineering

Practical explanations of how we design and calculate water supply and sewerage systems, and the standards behind them.

Flooded residential street after heavy rainfall, with stormwater overflowing the carriageway

Stormwater Hydraulic Calculations: From Rainfall Intensity to Pipe Sizing

A stormwater pipe is not sized by picking a diameter. Here is how rainfall intensity, catchment area and hydraulic capacity turn into a pipe that will actually drain the site.

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Sanitary drainage pipes laid in a reinforced concrete slab on a building site, with vertical stacks rising from the floor

Sanitary Sewerage Systems: Design, Hydraulic Calculations and Pipe Sizing

A sanitary sewer is not a collection of pipes. Here is how fixture load, design flow, slope and ventilation turn into a gravity system that will actually work.

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Scientists collecting a water sample for quality analysis

How Water and Sewerage Design Standards Actually Work: International Frameworks vs. Local Technical Rules

International frameworks set the outcomes; local technical rules set the design details. Here is how the two layers interact in practice.

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Three-dimensional building information model used for design coordination

Why BIM Matters for Water and Sewerage Design, Not Just Buildings

3D coordination catches underground clashes that 2D drawings simply cannot show. Here is where BIM earns its cost on water and sewerage projects.

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Close-up of a regulator valve and pressure gauge on a pipe

Hydraulic Pressure Calculations Explained: What Actually Determines Pressure at a Tap

Residual pressure at any point in a network depends on more than pipe size. Here is how the calculation actually works, and where designs commonly go wrong.

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