Transcription of ENGINEERING ETHICS: THREE CASE STUDIES
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ENGINEERING ETHICS: THREE CASE STUDIES
ENGINEERING ETHICS: THREE CASE STUDIES (Subtitle: EVERYTHING SHOULD BE AS SIMPLE AS POSSIBLE, BUT NOT SIMPLER)Victor Singer, (retired)Dan Schiffbauer, : Canons or Codes of Ethics Noteworthy Historical Background for Each Case In Point The Tacoma Narrows First Suspension Bridge: failed 1940 The Silver Bridge (US Hwy 35 Ohio River Crossing): failed 1967 The Shuttle Challenger: failed 1986 Questions To Ponder For Each Case In Point: Are There Relevant Ethical Issues Or Just 20-20 Hindsight? When, If At All, Did Which Ethical Issue Come Into Play? If Errors Occurred, Were They Errors Of Judgment, Omission or Commission?
TACOMA NARROWS BRIDGE: before, during and after failure • 3 hrstransverse flexural (up and down) vibration, amplitude 1.5 ft, 35 mph wind • Wind rose to 42 mph, a midspanhanger cable broke (slipped), and the torsional mode started. Frequency 0.2 Hz, 28 ftdouble amplitude • Frequency associated with von Karman vortices at 42 mph wind: ~ 1 Hz • Federal Works …
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