When exposed to intense heat, a lightweight metal truss can:
A. maintain its structural integrity
B. often contain a fire to a specific area
C. be expected to fail in 5 to 10 minutes
D. be expected to support firefighting operations for at least 20 minutes
Answer: C. be expected to fail in 5 to 10 minutes
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"r" selected species
What will be an ideal response?
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