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Questions and Answers
What factor significantly affects the deformation of a column?
What factor significantly affects the deformation of a column?
- The size and shape of the column (correct)
- The number of floors in the building
- The weight of the building it supports
- The type of paint used on the column
Why are steel beams commonly used in construction?
Why are steel beams commonly used in construction?
- They can be manufactured quickly
- They are immune to fire damage
- They have a high strength to weight ratio (correct)
- They are inexpensive compared to other materials
What can happen to unprotected steel beams in a fire?
What can happen to unprotected steel beams in a fire?
- They may undergo rapid heating and lose load bearing capacity (correct)
- They will completely melt
- They will remain structurally sound
- They will become stronger due to thermal expansion
How does concrete behave in a fire compared to steel?
How does concrete behave in a fire compared to steel?
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What protective measure can be applied to steel beams to enhance their fire resistance?
What protective measure can be applied to steel beams to enhance their fire resistance?
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Study Notes
Factors Affecting Beams
- Deformation and failure of columns are influenced by size, shape, and configuration.
- Unprotected columns may collapse structurally due to rapid heating.
Types of Beams
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Steel Beams
- High strength-to-weight ratio makes steel beams popular in construction.
- In a fire, unprotected steel beams heat quickly, leading to loss of load-bearing capacity.
- High thermal conductivity of steel results in rapid heat transfer, increasing risk of deformation or failure.
- Fire-resistant coatings can protect some steel beams from thermal effects.
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Concrete Beams
- Non-combustible nature of concrete provides good fire resistance.
- Capable of withstanding high temperatures while maintaining structural integrity.
- Behavior in fire can vary; some concrete beams may deform depending on materials and fire protection measures utilized.
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