Blanket 1
Blanket 1 : (1) Drainage Blanket: A drainage layer placed directly over the foundation material. (2) Grout Blanket: See: Consolidation Grouting. (3) Upstream Blanket: An impervious layer placed on the reservoir floor upstream of a dam. In the case of an embankment dam, the blanket may be connected to the impermeable element in the dam