Water Distribution 2


This course is a detailed view of piping projects. It includes a spreadsheet that I recommend that you download now and open in a window adjacent to this window.


Water Distribution Piping consists of construction of pipes of various sizes with fittings (bends, etc.), and meters, etc. We need to find out what flows we will be dealing with, and then how those flows will perform in our proposed system. This spreadsheet employs the Hazen-Williams formula to determine, from pipe characteristics and flow of water, what headloss there will be.

The flows are found many ways, with local rules sometimes prevailing (the entity maintaining the system may have rules, and the local health department will have others). The effect of this flow on our system includes lengths of pipe and bends, etc..

This course focuses on small additions to existing systems. To design such an addition to the system, one usually will be able to obtain from the entity maintaining the system the pressure and flow from fire hydrants close to your connection. This will be your basis for the addition pressures. Hopefully you will be given a flow greater than that you need with a residual pressure at a hydrant that will provide you satisfactory results with reasonably sized piping.

We first will be looking at a moderately sized project that includes 100 acres of homes, 3 acres of commercial area, and a proposed hotel. Below is a sketch of the draft proposed water lines:

The sketch is not exhaustive, not all of the