280 likes | 291 Vues
BRIDGES. By: Benjamin Cole, P.E. Cool Bridges. Not Common to Iowa. How Do Bridges Get Built. IDOT - ABC http://www.iowadot.gov/bridge/abc.htm Keg Creek (illustration) http://www.iowadot.gov/us6kegcreek/ Keg Creek (time lapse) https://www.youtube.com/watch?v=4E9VUslZUwA.
E N D
BRIDGES By: Benjamin Cole, P.E.
Cool Bridges Not Common to Iowa
How Do Bridges Get Built IDOT - ABC http://www.iowadot.gov/bridge/abc.htm Keg Creek (illustration) http://www.iowadot.gov/us6kegcreek/ Keg Creek (time lapse) • https://www.youtube.com/watch?v=4E9VUslZUwA
Choosing a Bridge Type • What is it crossing? A river, a road? • How long does it need to be? Span Lengths • How strong does it have to be? • How much will it cost?
Forces on Bridges • Water (flooding)
Forces on Bridges • Live Load (Cars, Trucks, etc.)
Forces on Bridges • Wind - Tacoma Narrows Bridge Collapse • https://www.youtube.com/watch?v=nFzu6CNtqec • Earthquakes
Links Tacoma Narrows Bridge Collapse • https://www.youtube.com/watch?v=nFzu6CNtqec IDOT - ABC http://www.iowadot.gov/bridge/abc.htm Keg Creek time lapse • https://www.youtube.com/watch?v=4E9VUslZUwA Massena Bridge slide (time lapse) • https://www.youtube.com/watch?v=CuPQxvkETrI