Reinforced brick masonry calculations recommend a modular ratio value of______________?
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Answer: C. 40
Explanation
Reinforced brick masonry combines masonry units and steel reinforcement into a composite structural system. The modular ratio relates the elastic modulus of steel to the lower effective modulus of brick masonry. Design codes establish a standardized modular ratio value of forty for reinforced brick masonry calculations. Modular ratio transformations simplify composite material analysis by converting steel areas into equivalent masonry areas. Brick masonry exhibits lower stiffness than reinforced concrete, requiring a higher modular ratio value. Empirical standards ensure consistent safety margins and predictable stress distributions in masonry walls.
Structural engineers use this modular ratio when designing reinforced brick lintels and load-bearing walls. Applying standard code factors ensures reliable analysis of composite masonry sections under lateral loads. Understanding material stiffness ratios prevents differential deformation failures in historic masonry retrofits. Option A suggests an eighteen, which is too low and typical of high-strength concrete rather than masonry. Option B proposes thirty, which underestimates the relative flexibility of brickwork compared to steel. Option D specifies fifty eight, which overestimates the modular difference beyond standard code recommendations.
- Subject
- Engineering
- Category
- Civil Engineering
- Topic
- —
- Difficulty
- medium
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