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Fiche 1,  Justifications,  Anglais

Record number: 1, Textual support number: 1 DEF

A method of draining a water-bearing soil around an excavation to reduce the pumping required within it and to strengthen the ground. A tube about 2 in. diameter is sunk by jetting into the water-bearing soil. It is fitted with a close-mesh screen at the bottom, and connected through a header pipe to a suction pump at the top. Generally, a number of wellpoints are put down and connected to one header pipe. Wellpointing is not effective in fine-grained sand.  1, fiche 1, Anglais, - wellpointing

Fiche 1,  Justifications,  Français

Record number: 1, Textual support number: 1 CONT

Assèchement d'une fouille par pointes filtrantes [...] On utilise des pointes filtrantes [...]; leur diamètre sera de 6 cm; le collecteur étant situé au niveau du sol, la pompe se trouve 0,50 m au-dessus.  1, fiche 1, Français, - ass%C3%A8chement%20par%20pointes%20filtrantes

Fiche 1,  Justifications,  Espagnol