A | - | B | - | C | - | D | - | E | - | F | - | G | - | H | - | I | - | J | - | K | - | L | - | M | - | N | - | O | - | P | - | Q | - | R | - | S | - | T | - | U | - | V | - | W | - | X | - | Y | - | Z |
|
2559. Drain well, Relief well, or Pressure relief well : A deep cylindrical drain located in the foundations of a dam or on its downstream to relieve the seepage pressures in pervious strata deep enough to be reached by trench drains and to drain localized concentrations of seepage, where a continuous trench of pervious blanket is not warranted; they are also employed to correct bed seepage conditions. | ||
SEE: | ||