Unit 2: Kansas City Hyatt Regency Walkway Collapse (1981) | STEM Disasters

Investigate the deadliest structural collapse in U.S. history prior to 2001 with this complete 6-page printable STEM Case Study Packet! Designed specifically for middle and high school classrooms, this unit provides a deep, informative look at the 1981 Kansas City Hyatt Regency Walkway Collapse, load distribution physics, box beam shear failure, safety factors, double-nut hanger rod modifications, and structural engineering ethics. What’s Included in this 6-Page Deep-Dive Packet: Page 1: Historical Case Study & Technical Breakdown – Full historical narrative of the July 17, 1981 disaster, atrium structural design, continuous vs. interrupted hanger rod physics, box beam weld failure, and comprehension check questions. Page 2: Day in the Life Scenario Challenge – Students step into the shoes of a Lead Forensic Investigator for the National Bureau of Standards (NBS) on July 18, 1981, analyzing wreckage telemetry, box beam deformation, and shop drawing modifications. Page 3: Hands-On Unplugged Simulation & Applied Math – Simple step-by-step math calculations comparing dead/live load distribution, single continuous rod load (P) vs. double-nut load (2P), and ultimate structural capacity ratios. Page 4: Engineering Ethics & Workplace Dilemma – The communication breakdown between engineering designers and steel fabricators: analyzing phone approval without load recalculations, professional seal stamping ethics, and corporate liability. Page 5: Redesign Brief & Innovation Lab – Creative blueprinting assignment where students design "Hyatt Walkway V-2," featuring solid steel I-beams, independent ceiling-anchored support rods, and load-monitoring strain gauges. Page 6: Teacher Answer Key & Scoring Rubric – Complete answer key for all questions and math problems, plus a 10-point grading rubric for the design blueprint. Teacher Benefits: 100% Unplugged & Copy-Paste Friendly – Clean text layout with zero dark background boxes, code block syntax, or special math symbols for seamless editing in Word, Google Docs, or Canva. Multi-Day Classroom Value – Covers 3 to 5 full class periods; perfect for Physics, Physical Science, Civil Engineering, Architecture, CTE electives, or emergency sub plans. Highly Engaging Content – Combines real-world structural math, forensic investigation, communication ethics, and architectural redesign!