Which of the following structural materials exhibits the highest fire resistance in terms of integrity and insulation properties?
- AStructural steel with intumescent coating
- BTimber with fire-retardant treatment
- CAluminum alloy with thermal barriers
- DReinforced concreteCorrect
Solution
Concept
Fire resistance
Step-by-step solution
1. Reinforced concrete has the best fire resistance and insulation among the options.
Explanation
Concrete does not burn and has low conductivity.
Why the other options are wrong
Steel, timber and aluminium lose strength or burn faster.
Shortcut
RCC best.
Correct answer: D) Reinforced concrete