Introduction to Sustainable Civil Engineering Design
1st Edition
ISBN: 9780134013916
Author: Neumann
Publisher: PEARSON
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Chapter 1, Problem 3EDDS
To determine
Find whether the collapse of the bridge without warning is better described by a system with a feedback (figure 1.11) or a system lacking a feedback (figure 1.10).
Explain how a smart bridge responds to a risk of overloading or collapsing condition.
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During an investigation of a bridge collapse, you will investigate another similar bridge, and find it to be only marginally safe. You contact the governmental agency responsible for the bridge and inform them of your concern for the safety of the structure. You were told that the agency is aware of this situation and has planned to provide in next year’s budget for its repair. Until then, the bridge must remain open to traffic. Without this bridge, emergency vehicles such as police and fire apparatus would have to use an alternate route that would increase their response time by approximately twenty minutes. You are thanked for your concern and asked to say nothing about the condition of the bridge. The agency is confident that the bridge will be safe.
Engineers are designing a new bridge to replace a 100-year-old bridge that has fallen into disrepair due to increased traffic and weathering.
Describe a consideration that a computer model could help engineers analyze in order to develop the design.
Describe one possible criterion and one possible constraint of the design of the new bridge.
Case Study During an investigation of a bridge collapse, Engineer A investigates another similar bridge, and finds it to be only marginally safe. He contacts the governmental agency responsible for the bridge and informs them of his concern for the safety of the structure. He is told that agency is aware of this situation and has planned to provide in next year’s budget for its repair. Until then, the bridge must remain open to traffic. Without this bridge, emergency vehicles such as police and fire apparatus would have to use an alternate route that would increase their response time by approximately twenty minutes. Engineer A is thanked for his concern and asked to say nothing about the condition of the bridge. The agency is confident that the bridge will be safe. Analyse the case using the six steps with the perspective of Engineer A
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Introduction to Sustainable Civil Engineering Design
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