Water and Wastewater Terms Beginning S

A B C D E F G H I J K L M N O P Q R S T U V W Y Z

sand equivalent

An American Society for Testing and Materials (ASTM) test for trench backfill soils. The test uses a glass tube and the soil (backfill) is mixed with water in the tube and shaken. The tube is placed on a table and the soil allowed to settle according to particle size. The settlement of the soil is compared to the settlement of a standard type of sand grain sizes.