A method and apparatus to detect and locate damage and...

Details A method and apparatus to detect and locate damage and... A method and apparatus to detect and locate damage and...

G - Physics

01

M

G01M 3/16 (2006.01) E04D 13/00 (2006.01) E04D 15/00 (2006.01)

Patent

CA 2613308

A leak in a membrane on top of a horizontal roof deck is located by a manually operable carriage which is swept over the upper surface of the membrane on the roof deck. A measuring and switching circuit generates a voltage having a positive attached to the roof deck and a negative attached to conductive brushes on the carriage. The brushes are arranged to form an outer peripheral contact with an inner contact inside the outer contact. Thus the presence of a leak is detected by the outer set of conductive brushes at distance from the leak and by the inner conductive brush when directly over the leakage site.

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