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3 cards from this section. Quick, good the night before a test.
What is the primary load-bearing mechanism of arches?
Think about how they are designed to handle forces.
Define the span-to-rise ratio.
How does it relate to the height of the arch?
What is a key advantage of the parabolic arch?
Think about how the shape affects load distribution.
True or False: A three-hinged arch may develop internal stresses from movement?
Consider the design purpose of three hinges.
You are tasked with designing a new arch bridge. Given varying live loads expected to act on segments of the arch, propose strategies to maintain structural integrity using deployment of materials and design shapes. What factors must be considered?
Focus on load distribution variability and impact on design.
A historical arch bridge has a rise of 10 ft and a span of 80 ft. Analyze its stability with a proposed increase in the rise to 15 ft. What are the expected changes in horizontal reaction H?
Use the formula correctly and compare values before and after the change.
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