Abstract
The three-edge bearing test is one of the only direct test methods used for the evaluation of a finished concrete product. Many tests exist for the evaluation of the components of reinforced concrete structures and pavements, but none routinely evaluate the performance of the product with the applied loads on the finished product. This makes the three-edge bearing test one of the most unique structural evaluation tests in existence in the engineering and construction fields. The three-edge bearing test is approaching its 100-year anniversary and this paper presents the reasons for its initial development and its use in the present day. Technology has advanced considerably in the past century with finite element modeling, remote sensors, and computerized construction equipment, yet the three-edge bearing test is still the linchpin in the evaluation of reinforced concrete pipe design and installation. The three-edge bearing test is also positioned to be a key component in the assessments of future composite reinforced concrete pipe products, so although it may be nearing the century mark, this test is well-positioned to move into its next century. Understanding its past is, therefore, critical in evaluating the future of this key test method for reinforced concrete pipe.
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