JOINT PERFORMANCE EVALUATION

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 The Falling Weight Deflectometer is the most common device used for concrete pavement surveys. Whilst the Falling Weight Deflectometer is identified in DMRB CD 227 as an optional NDT technique, it can provide very informative data as part of a detailed investigation. Requirements for the use of an Falling Weight Deflectometer and recommended arrangements for concrete testing using an Falling Weight Deflectometer are outlined in DMRB CS 229.   For concrete pavements, the primary use of the Falling Weight Deflectometer is to assess the performance of any formed joints or cracks. The most common outputs are: