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Because bridges expand and contract with the change in temperature. The expansion joints allow the bridge to 'flex' as the temoerature rises and falls, ensuring the structure doesn't buckle or collapse.

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What type of engineers design bridges?

Civil engineers and Structural engineers.


What is the purpose of engineers?

To assist in removing obstacles and classifying bridges.


What is engineers do?

Engineers design things such as bridges or pipes based on scientific principles.


What is the meaning of the job of an engineer?

Depends on the type of engineer. Originally, it meant one who cared for, and operated engines- like a railroad locomotive. While it still means that, there are other types of engineers. Civil engineers design roads, bridges, dams, and large buildings. Electrical engineers design electrical distribution and supply systems. Chemical engineers design chemical manufacturing processes. Military engineers may build bridges, destroy bridges, place or clear minefields, build obstacles, etc.


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Why do engineers design city sidewalks using blocks of concrete separated by a small gap to prevent them from cracking?

That is to account for thermal expansion.


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Well, friend, one beautiful example of thermal expansion being used for good stewardship is in the design of bridges. Engineers use the principles of thermal expansion to ensure that bridges have room to expand and contract with temperature changes, preventing damage and ensuring their longevity. It's a wonderful harmony between nature's laws and human ingenuity, creating structures that can stand the test of time while respecting the environment.


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Explain how engineers prevents the expansion of solids from damaging structures?

Engineers prevent the expansion of solids from damaging structures by incorporating expansion joints into the design. These joints allow materials to expand and contract without causing stress or damage to the structure. Proper materials selection and planning for thermal expansion also play a crucial role in preventing damage.


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Civil engineers and Structural engineers.