Calculating pressure and flow requirements – Part 3
Lloyd Preston
7 November 2019
In this week’s knowledge booster video, Frazer Ross explains how to calculate the pressure needed for climbing water systems. He outlines the three crucial components required to determine this pressure: static head, pipe friction loss, and discharge pressure at the fitting.
By breaking down these elements, Frazer clarifies the importance of each factor in ensuring that water can be effectively supplied to building outlets.
Watch the video and view more of our resources today.
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Hello, I’m Frazer Ross, and in this week’s knowledge booster video I’m talking about calculating the pressure requirement. Having determined how much water we need, we need to then determine at what pressure we need to supply it at. This is made up of three things: static head, the pipework friction loss, and a
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discharge pressure required at the fitting. Static head is the height difference between the water source in the highest outlet in a building. Imagine a tube or riser full of water, the weight of the water and the riser due to gravity at this point decreases pressure. It has to be overcome
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before we get water at the top. The pipework friction loss is the hydraulic loss from getting water from point A through the system to point B, and the discharge pressure is the pressure required at the fitting tap or shower head in order for it to function properly.
