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PUBLISHED BY THE NATIONAL ENVIRONMENTAL SERVICES …
Why is understanding hydraulics important? The science of hydraulics is as old as civilization centuries, engineers have succeeded in making waterflow from one place to another with as few hitches aspossible. When problems do occur, they are usuallyrelated to the hydraulics involved in pipe flow. Liquids in motion produce forces and pressure wheneverthe velocity, flow direction, or elevation pipe pressure and flow at certain points alongthe pipe s path can help determine pipe size and capac-ity. It also can help in determining what pipe materialwould work best in given situations. Further, having anunderstanding of hydraulics can help system managersdecide if pressure reducers or pumps are necessary totransport water in an efficient manner. Most small waterand wastewater systems do not have an engineer onstaff, or even one they can consult, who might be able toanswer simple or basic questions about hydraulics.
P A G E O F F O U R Tech Brief • Fundamentals of Hydraulics: Pressure, Winter 2010, Vol. 9, Issue 4 Hydrostatic Pressure The pressure water exerts is called hydrostatic pressure.
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