ABSTRACT
Daniel Bernoulli's Formula has stated the theoretical equivalence of energies from point to point in a steady state flow system. Bernoulli's Energy Equation holds that, ignoring friction losses, from point to point in a fluid system employing steady state flow, the total energy is the same at every point in the path of flow, and these energies are composed of pressure head, velocity head, and elevation head. The hydraulic grade line slopes downward along the length of pipe, showing a loss of pressure energy. The difference between the level of the hydraulic grade line in the static system, and that in the dynamic system, at any one point, is the feet of pressure lost because of friction in the pipe. Pressure for community water use can be provided adequately by pressure head alone, or by a combination of pressure head and elevation head.
