Movie shows how suspension bridges oscillate during an earthquake
Movie shows how suspension bridges oscillate during an earthquake
personal account of the tacoma bridge "Galloping Gertie"
n eye-witness account of "Galloping Gertie's" demise was graphically provided by Leonard Coatsworth, a Tacoma newspaper editor:
"Just as I drove past the towers, the bridge began to sway violently from side to side. Before I realized it, the tilt became so violent that I lost control of the car... I jammed on the brakes and got out, only to be thrown onto my face against the curb.
"Around me I could hear concrete cracking. I started to get my dog Tubby, but was thrown again before I could reach the car. The car itself began to slide from side to side of the roadway.
"On hands and knees most of the time, I crawled 500 yards or more to the towers... My breath was coming in gasps; my knees were raw and bleeding, my hands bruised and swollen from gripping the concrete curb... Toward the last, I r
The various key measurements of the Bridge are located in the Construction Data section of the Research Library. A kit for a 3-D cardboard model of the Golden Gate Bridge can be purchased at the Golden Gate Bridge Gift Center (southeast side of the Bridge) or online at www.paperlandmarks.com/golden.htm.
Lessons and activities on structures
The Romans were some of the most important innovators in structural design. Of their contributions, the arch and the bridges they built using this elegant shape stand out as the most creative and enduring. In this video segment adapted from Building Big, series host David Macaulay describes the forces and design features that give arches their strength.
Forces in an arch bridge
Show and resources on engineering and design for middle school students
Open to public, Diigo group with excellent resources
9 items | 44 visits
Diigo list from the WGBH Teachers Domain presentation at ISTE, Denver, June 30, 2010
Updated on Jun 29, 10
Created on Jun 29, 10
Category: Schools & Education
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