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The preliminary report is out on the bridge in Minneapolis that collapsed last year,
The BBC claims they found that some of the gusset plates that failed were only half the thickness of the rest and are calling it a design error.
Although they cannot find the original design so it's not clear if the thin plates were wrongly designed or the wrong plates were fitted.
The BBC claims they found that some of the gusset plates that failed were only half the thickness of the rest and are calling it a design error.
Although they cannot find the original design so it's not clear if the thin plates were wrongly designed or the wrong plates were fitted.