IS 5690-1982

标准号：IS 5690-1982
发布日期：1982/11/1 12:00:00
实施日期：1999/12/31 12:00:00
适用范围：1.1 This standard lays down guidelines for lining of existing unlined canals with combination lining which consists of lining the sides of a canal with rigid lining with or without polytheylene film or bitumen felt underneath and the bed with a suitably protected flexible type of lining.1.2 Combination lining is suitable for those reaches which are in regime or which have acquired working stability. Combination lining may also be adopted for reaches not in regime but not subjected to scouring by taking suitable steps, such as changing the side slope, providing falls, etc.