Water supply systems (ICS code(s): 91.140.60)

DRS 644-7: 2026, Plumbing works — Code of practice — Part 7: Healthcare facilities and medical gas and medical vacuum systems; (47 page(s), in English)

This Draft Rwanda Standard specifies classification, general design, performance requirements and test methods for gully tops and manhole tops.

It applies for manhole tops and gully tops with a clear opening up to and including 1 000 mm for installation within areas subjected to pedestrian and/or vehicular traffic.

This standard is not applicable to gratings as part of prefabricated drainage channels, floor and roof gullies in buildings and surface boxes. NOTE This Part 1 of DRS 607 is not applicable in isolation, but only in combination with DRS 607-2, DRS 607-3, DRS 607-4, DRS 607-5 and DRS 607-6.