IMPROVEMENTS IN OR RELATING TO MANHOLES AND THEIR USE

摘要

A manhole access hatch or similar with a hollow shaft (2)having at least one inlet (4)at or toward its upper end. The hollow shaft ((2)is fluidly connected to an outwardly directed tapered base (3)at or toward the lower end of said hollow (shaft2). The tapered base (3)tapers down to at least one outlet (3B) at or towards its "apex"(3A). The base and hollow shaft provides a fluid connection in use between an inlet and an outlet.