Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
5 Cards in this Set
- Front
- Back
|
can be constructed with hand tools or power tools depth of about 15 meters (50 ft) can have the greatest diameter that a space may allow |
Dug wells |
|
|
A steel drive-well point is fitted on one end of the pipe section and driven into the earth. The point may be driven into the ground to a depth of up to 15 meters (50 ft). |
Driven wells |
|
|
These are dug with earth augers are usually less than 30 meters (100 ft) deep. The diameter ranges from 2 to 30 inches. The well is lined with metal, vitrified tile or concrete. |
Bored wells |
|
|
Requires more elaborate equipment depending on the geology of the site. Used for drilling oil and can reach up to 1000 meters in depth. |
Drilled wells |
|
|
Use extreme water pressure so as not to affect existing foundation in the vicinity. It makes use of a suction pump above, while casing acts as the pump riser. |
Jetted wells |
