This standard BS 9101:2017 Steel and aluminium rainwater systems. Specification is classified in these ICS categories:
91.140.80 Drainage systems
23.040.01 Pipeline components and pipelines in general
91.060.20 Roofs
This British Standard specifies requirements for the design and manufacture of metal gutters and pipes intended to drain rainwater from buildings. It specifies the materials, tolerances, mechanical properties and surface conditions, coatings, laminated surfaces, jointing methods and fixings for rainwater systems, including fittings and accessories for assembly or support.