Water DemandThe figures a supply network is sized on.Civil EngineeringOrder-of-magnitude planning values. Local data always wins.ItemTypical planning figureDomestic use100 to 200 litres per person a dayPeak day factorAbout 1.2 to 1.5 times averagePeak hour factorAbout twice the average hourFire flowSet by the fire authority, not demandLeakage allowanceA large share of what is put inService reservoirAround one day of demandEducational reference. Indicative planning values only. Use the waterundertaker's own figures and design rules.Water Demandlearnposters.com
Water Demand — printable engineering wall chart from LearnPosters. Free vector PDF, US Letter and A4.

What’s on the Water Demand poster

A 6-row table: Item · Typical planning figure.

Order-of-magnitude planning values. Local data always wins.

Educational reference. Indicative planning values only. Use the water undertaker's own figures and design rules.

Questions about the Water Demand poster

What’s on the Water Demand poster?
A 6-row table: Item · Typical planning figure. Order-of-magnitude planning values. Local data always wins. Domestic use — 100 to 200 litres per person a day; Peak day factor — About 1.2 to 1.5 times average; Peak hour factor — About twice the average hour; Fire flow — Set by the fire authority, not demand; Leakage allowance — A large share of what is put in; Service reservoir — Around one day of demand. Educational reference. Indicative planning values only. Use the water undertaker's own figures and design rules.
Who is the Water Demand poster for?
Water Demand belongs to the Civil Engineering section rather than to a school year, because engineering is not something one grade owns. Anyone learning water resources can pin it up — a beginner, a student mid-course, or someone revising years later.
When should you use the Water Demand poster?
First-pass sizing of a main, a service reservoir or a pump. A wall chart earns its place by being glanceable from where the work is happening, so Water Demand belongs on the wall where that engineering work actually happens, within glancing distance, rather than filed away.
What other posters go with Water Demand?
Culvert Design, Continuity & Energy and Groundwater & Wells sit alongside Water Demand in the Civil Engineering section. Printed together they make a wall rather than a single sheet, which is how a reference set actually gets used.Culvert DesignContinuity & EnergyGroundwater & Wells
Is the Water Demand poster free to download and print?
Yes. Water Demand downloads as a free PDF with no account, no email and no watermark, like everything else in the Civil Engineering section. Print as many copies as you like for a home, a classroom, a library or a tutoring group; reselling the file is the only thing the licence rules out.Read the licence
What size does the Water Demand poster print at?
Water Demand is a vector PDF laid out for US Letter, and prints on A4 with Fit to page — the same file, no separate download. Because every mark on it is drawn rather than photographed, it stays sharp enlarged to A3, A2 or A1 at a copy shop. Colour carries emphasis only, so a greyscale print of Water Demand loses nothing.Printing guide

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