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Record 1,  Textual support,  English

Record number: 1, Textual support number: 1 CONT

Retention criterion .... Criteria for granular filters can be found in many text book on soil mechanics .... In these criteria, which have been drawn up on the basis of laboratory tests, a defined grain size is often compared with a pore diameter of the filter. The behaviour of soil material, especially in the case of cohesive soils, is a far too complicated phenomenon to be predicted only from the grain-size distribution. Because of this there is little to be gained by enumerating a large number of sometimes contradictory criteria for both granular and synthetic filter materials.  3, record 1, English, - retention%20criterion

Record number: 1, Textual support number: 2 CONT

Since there are three mechanisms through which a geotextile performs the filtration function, there should be three criteria for the relevant geotextile properties: 1. Criterion for minimum permeability ("permeability criterion") ... 2. Criterion for maximum opening size ("retention criterion") ... 3. Criterion for minimum percent open area (wovens) or minimum porosity (nonwovens) ("nonclogging criterion") ....  2, record 1, English, - retention%20criterion

Record number: 1, Textual support number: 1 OBS

Criterion: plural: criteria, criterions.  4, record 1, English, - retention%20criterion

Record 1,  Textual support,  French

Record number: 1, Textual support number: 1 CONT

Dans sa proposition de dimensionnement d'un filtre géotextile de rétention d'un sol meuble, J.P. Giroud exprime la compacité du sol par sa densité relative D_r (...), déterminée par essais de laboratoire, en distinguant entre un sol lâche, moyennement compact et compact. A défaut d'essais de laboratoire, on peut faire in situ une estimation de la compacité du sol à l'aide de tests simples (...) La stabilité de la structure d'un sol dépend, davantage encore que de D_r, du coefficient d'uniformité C_u. Les critères de rétention d'un sol meuble sont définis dans le tableau 57 où le seul paramètre conduisant au choix du géotextile est le diamètre de filtration (...)  1, record 1, French, - crit%C3%A8re%20de%20r%C3%A9tention

Record 1,  Textual support,  Spanish