From a fire service viewpoint, which of the following is another weakness of steel?

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Enhance your skills with the Art of Reading Buildings Test. This test features multiple choice questions, each equipped with hints and explanations to aid in your learning. Prepare effectively for your upcoming exam!

Multiple Choice

From a fire service viewpoint, which of the following is another weakness of steel?

Explanation:
In a fire, steel loses strength as temperature rises, becoming softer and more deformable. When exposed to high heat, its yield and ultimate strengths drop and its stiffness decreases, so a member under load can bend, sag, or elongate before it fails. That makes the tendency to soften and elongate when heated the key weakness from a fire service perspective. It doesn’t harden with heat, and it doesn’t resist deformation at high temperatures; in fact, it expands and deforms more readily under fire conditions.

In a fire, steel loses strength as temperature rises, becoming softer and more deformable. When exposed to high heat, its yield and ultimate strengths drop and its stiffness decreases, so a member under load can bend, sag, or elongate before it fails. That makes the tendency to soften and elongate when heated the key weakness from a fire service perspective. It doesn’t harden with heat, and it doesn’t resist deformation at high temperatures; in fact, it expands and deforms more readily under fire conditions.

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