This Draft Rwanda Standard specifies requirements, sampling and test methods for gully tops and manhole tops made of cast iron with a clear opening up to and including 1 000 mm.
It is applicable to manhole tops and gully tops for use in areas subjected to pedestrian and/or vehicular traffic of class A15, B 125, C 250, D 400, E 600 and F 900.
This Standard is not applicable to:
⎯
cover fillings installed on site such as concrete and paving blocks;
⎯
concave gratings for class D 400 installed in carriageways of roads or hard shoulders and concave gratings for classes F 900 and E 600;
⎯
gratings/covers as part of prefabricated drainage channels;
⎯
floor and roof gullies in buildings; and
⎯
surface boxes.
NOTE This draft standard is not applicable in isolation but only in combination with DRS 607-1 and gives guidance for combinations of covers/grating made of cast iron with frames according to DRS 607-3, DRS 607-4, DRS 607-5 or DRS 607-6.
Road equipment and installations (ICS code(s): 93.080.30)