Page 149 - Water and wastewater engineering

4-4 WATER AND WASTEWATER ENGINEERING

Well head
(includes pump motor, discharge
head, and base plate)
Gravel fill pipe
with cap
Air-line
Discharge pipe gauge

Grout seal

Inner casing
Soil

Static water level

Pump column and
Low-permeability shaft assembly
nonaquifer
material
(e.g., clay)

Drive shoe

Outer casing
(note: a third
outer casing may
also be used)
Continuous slotted
screen intake
Vertical turbine
pump bowl assembly
and intake
Unconsolidated-deposits
aquifer
(e.g., sand and Gravel pack
gravel)
material

(a)
FIGURE 4-1
( a ) Typical construction of a screened, gravel-packed well in an unconsolidated-deposits aquifer.