Thank you This live web event has ended. Thank you for attending. Contributors Douglas L. Fell, PE Doug Fell is a CalOES Assessor, Coordinator and Instructor. Doug is the managing principal of Structural Resource Center LLC. He was the lead structural engineer for the Minneapolis Metrodome roof collapse stabilization and return to service. Doug is the chairperson of the Minnesota SEA SEER Committee and is the MNSEA SEER member organization representative on the NCSEA SEER Committee.