Impulse Testing of Brickwork Sewers

Abstract

This paper describes a study into the application of dynamic testing to the assessment of egg shaped brickwork sewer rings. An investigation procedure using impulsive force hammer excitation with various time and frequency domain analysis techniques is proposed for the location of structural discontinuities in such sewers. The experimental results from a full scale model sewer, and a full scale, in-situ field test on a similar sewer are presented. The chosen non-destructive test method proved to be a convenient tool for the integrity assessment of brickwork sewers.

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