What is the maximum jetting pressure acceptable for concrete pipes?

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In the UK, high pressure water jetting is widely used to clean and mostly to clear blocked sewer pipelines – often as an emergency operation. The European Standard BS EN14654-1:2014 Management and control of operational activities in drain and sewer systems outside buildings, Part1: Cleaning, states that “Maximum safe working pressures to avoid damage will… Read more »

What is the minimum depth of cover needed for concrete pipes?

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concrete drainage

Minimum cover depths for concrete pipes vary depending on the vehicular traffic loading likely to be sustained by the pipeline. There are various industry specifications and Standards that state values for minimum cover depths based on these loading conditions. Most loading conditions used for design either relate to patterns of wheel loading generated from main… Read more »

The creator of the first sustainable drainage system

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Joseph Bazalgette

Joseph Bazalgette Sir Joseph Bazalgette (1819 – 1891) was the chief engineer of London’s Metropolitan Board of Works. Born in London on the 28th March 1819, Bazalgette began his career as a railway engineer. During this role he gained considerable experience in land drainage and reclamation. When the London Metropolitan Board of Works was established… Read more »