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The initial fact-finding study reports and subsequent testing of samples and engineering design checks pointed fingers at the design flaws which had been found as the prime reason of failure in the design details of the cantilever pier-caps (the one-side overhung column caps to support the pre-cast rail bridge pieces), together with ill-quality material and workmanship standards followed for the fast-tracked construction activities that were being pushed to the limit to meet the target of making the Delhi Metro rail network functional in all desired stretches of Delhi and suburbs like Noida, Gurgaon and Faridabad that comprise of the National Capital Region (NCR).bricks-n-mortar, Delhi Metro (DMRC) bridge collapse accident | Corrective Actions on Column Piers with faulty Cantilever Overhangs | BRICKS-n-MORTAR.com, Feb 2010

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