A desktop study undertaken by TMR during a review of the specification MRTS25 Steel Reinforced Precast Concrete Pipes found that many reinforced concrete pipes in service on the TMR network have developed longitudinal cracking. This indicates that the pipes may be being overloading either during construction or when in service. There may also be latent issues associated with the design, manufacture or installation of concrete pipe culverts. The concern is that the development of longitudinal cracking may lead to in-service pipes not achieving their intended design lives or requiring significant maintenance funding allocations. Consequently, there is a need to determine the causes of longitudinal cracking and other defects so that remedial actions can be implemented if necessary.
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