Apparatus for capping manholes

Details Apparatus for capping manholes Apparatus for capping manholes

E - Fixed Constructions

02

D

94/12

E02D 29/14 (2006.01)

Patent

CA 1142009

ABSTRACT OF THE DISCLOSURE A dam structure including a water filled torus of flexible impervious material having a diameter greater than a typical manhole and a membrane extending across the central opening defined by the torus, the dam being easily portable and adapted to sit on a manhole when the case of a flood or spill so as to prevent seepage into the manhole.

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