This standard BS 1703:2005 Refuse chutes and hoppers. Specification is classified in these ICS categories:
91.140.70 Sanitary installations
13.030.40 Installations and equipment for waste disposal and treatment
This British standard specifies requirements for gravity transport systems for refuse in multi-storey buildings, consisting of refuse chutes in the form of one or more vertical pipes, complete with hoppers, receiving refuse from successive floors in a building and discharging it into a refuse storage system.