One of the methods to calculate the hydraulic loss in
water pipes is the Hazen-William empirical equation. The equation is
dependent on the flow rate, the diameter, the roughness factor and the
length of the pipe.
The roughness factor is dependent on pipe material and other criteria.
Furthermore, the equation has certain limitations related to the temperature
of the water and the Reynolds number. Other equations can be used to
calculate the head-loss and they can relatively be more accurate such as the
The equation should not be used for flows with Reynolds
number less than 10^5. The following engineering tool can be used to
estimate the head-loss in meter. The tool can help graduate and
post-graduate students who are studying mechanical, civil, chemical or
environmental engineering and will be expected to use it after graduation
while pursuing their careers in different fields of industry such as the
water industry, nuclear industry and many more.