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26 Chapter 1 Introduction to Water Systems
Drop pipe Closed top Force
Pump
Casing to extend at least
1˝ above top of concrete
Screen
6´
5˝
Detail at base of pump
6˝
Gravel
Natural ground surface 8˝ fill clay
Pipe drain
Soil
Cement grout
Waste trough may be
used instead of pipe
drain if desired
Fissured or
unsound rock
Sanitary Wrought-steel
base Bedrock
Watertight drive-shoe
joint
8˝ fill clay
Cylinder
Water-bearing
Alternate method of formation
setting pump
Figure 1.13 Water Supply from Driven Well (After Virginia State Department of Health)
Conversion factors: 1 1 ft 0.3048 m; 1 1 in. 2.54 cm
