By David Willoughby
Entire insurance of the plastic pipe and its program within the beverages and gasoline fields.
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Additional info for Plastic piping handbook
Loads on a piping system are classified as sustained or occasional loads. Sustained Loads Sustained loads are those loads that do not vary considerably over time and are constantly acting on the system. Examples of sustained loads are the pressures, both internal and external, acting on the system and the weight of the system. The weight of the system includes both that of the piping material and the operating fluid. The sustained maximum system operating pressure is the basis for the design pressure.
This equation is best used for pipelines with Reynolds numbers in the range of 4 ϫ 106 to 40 ϫ 106. The Panhandle B Equation is used in the design of large diameter, high-pressure, long pipelines. The average pipeline efficiency factors are the same as the Panhandle A Equation. The Panhandle A Equation provides a reasonable approximation for turbulent flow conditions. 51 where ⌬P ϭ P12 Ϫ P22 [ 2 (P1P2) and Pavg ϭ ᎏ P1 ϩ P2 Ϫ ᎏ 3 P1 ϩ P2 ] Weymouth Equation. This is one of the older equations, but it still is used widely for natural gas distribution and gathering systems.
Plastic piping handbook by David Willoughby