Question

The fire rating in reinforced glass is expressed in ________.

• A. Calorie
• B. Watt
• C. Jule
• D. Minutes

Hint:

Fire rating measures how long a material can resist fire exposure. Common fire ratings:
• 30 minutes
• 60 minutes
• 120 minutes Fire ratings are important for safety and building code compliance.

Answer 1

The Correct Option is D

Concept: Fire rating indicates the duration for which a building material or component can resist fire while maintaining:
• Structural integrity
• Insulation
• Stability Fire-resistant glass and reinforced glass are tested for their performance under fire exposure.

Step 1: Analyze Calorie.
Calorie is a unit of heat energy and is not used to express fire rating. Hence, option A is incorrect.

Step 2: Analyze Watt.
Watt is a unit of power. Hence, option B is incorrect.

Step 3: Analyze Jule.
Joule is a unit of energy and is not used for fire rating classification. Hence, option C is incorrect.

Step 4: Analyze Minutes.
Fire rating is expressed in terms of time duration, usually minutes or hours. Examples:
• 30-minute fire rating
• 60-minute fire rating
• 120-minute fire rating Hence, option D is correct.

Step 5: Choose the correct option.
Fire rating in reinforced glass is expressed in minutes. Therefore, the correct answer is: \[ {\text{(D) Minutes}} \]