Last week in Performance Arts Cmty. Improvement Dist. v. ACE Amer. Ins. Co., 2015 WL 3491292, 2015 U.S. Dist. LEXIS 71592 (W.D. Mo., June 3, 2015), a federal court in Missouri shot down an insured’s arguments that a wall collapse caused by the excluded peril of defective design was a covered ensuing loss under a builder’s risk policy. The developer admittedly erred in calling an for excess amount of concrete slurry to be pumped behind the structure, but the policyholder contended that the collapse that that mistake caused was a separate loss by “excessive lateral pressure.” The court analogized to that to arguing that the collapse of a defectively-designed building was a separate loss caused by the covered peril of…