CIVIL ENGINEERING FORMULAS

FIGURE 12.28 Definition sketch for the head on a pump. (Metcalf & Eddy—Wastewater Engineering: Collection and Pumping of

Wastewater, McGraw-Hill.)

hd

hs

Ho

hfd+Σhmd

hfs+Σhms

Ht

Hs

Vs^2

Motor

Entrance loss

Suction intake

Energy grade line

Datum

Pump

discharge

Pump

Hydraulic grade line

Hstat

2 g

Vd^2

2 g

Vd^2

2 g

339