Chapter 11 Quiz: Structural Strength And Stability

1.

What are the meanings of these words in order? Arch, rebar, truss, cantilever, dome and corrugation.

A.

A beam supported at only one end, folding a material repeatedly to provide additional strength, looks like the top part of a sphere, a network of beams that form triangles, a curved structure used to support a load, or make an opening in a bigger structure, and steel rod used to reinforce concrete.
B.

A curved structure used to support a load, or make an opening in a bigger, steel rod used to reinforce concrete, a network of beams that form triangles, a beam supported at only one end, looks like the top part of a sphere, and folding a material repeatedly to provide additional strength. structure

Correct Answer
B. A curved structure used to support a load, or make an opening in a bigger, steel rod used to reinforce concrete, a network of beams that form triangles, a beam supported at only one end, looks like the top part of a spHere, and folding a material repeatedly to provide additional strength. structure

Explanation
The correct answer lists the meanings of the words in the correct order. It starts with "a curved structure used to support a load, or make an opening in a bigger" which refers to the definition of a cantilever. Next, it mentions "steel rod used to reinforce concrete" which describes the meaning of rebar. Then, it states "a network of beams that form triangles" which is the definition of a truss. After that, it mentions "a beam supported at only one end" which refers to an arch. Finally, it states "looks like the top part of a sphere" which describes a dome, and "folding a material repeatedly to provide additional strength" which refers to corrugation.

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2.

Why are trusses so useful in structures? Give and example of a structure that uses trusses in it's design.

3.

Compare between the arch and the dome. What is different about them? The same?

4.

A student is leaning back in a chair. Eventually, the student falls over backward. Explain what happened using the terms “force,” “centre of gravity,” and “stability.”

5.

Chose the option that states the four ways that structure failure usually happens.

A.

Bad Design, Foundation Failure, Earthquakes, Faulty Construction, Tornadoes
B.

Bad design, Faulty Construction, Foundation Failure, Extraordinary Loads
C.

Bad Design, Extraordinary Loads, Faulty Construction, Tsunamis

Correct Answer
B. Bad design, Faulty Construction, Foundation Failure, Extraordinary Loads

Explanation
The correct answer is Bad design, Faulty Construction, Foundation Failure, Extraordinary Loads. This answer states the four common ways that structure failure usually happens. Bad design refers to a design that does not meet the necessary structural requirements. Faulty construction refers to errors or mistakes made during the construction process. Foundation failure refers to issues with the foundation of the structure, such as settling or shifting. Extraordinary loads refer to excessive or unexpected forces placed on the structure, such as heavy snow or wind loads.

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