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In case of 2-way slab, the limiting deflection of the slab is
- a)primarily a function of the long span
- b)primarily a function of the short span
- c)independent of long or short span
- d)dependent on both long and short spans
Correct answer is option 'B'. Can you explain this answer?
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In case of 2-way slab, the limiting deflection of the slab isa)primari...
Understanding Deflection in 2-Way Slabs
In the context of reinforced concrete design, the limiting deflection of a 2-way slab is primarily influenced by the short span. Here’s a detailed explanation:
Deflection Behavior
- In a 2-way slab system, the deflection is a response to the weight of the slab and any applied loads.
- The deflection is governed by the stiffness of the slab, which is influenced by the span lengths.
Impact of Span Lengths
- The short span generally controls the behavior of deflection due to its geometry.
- A shorter span means the slab has less distance to bend, resulting in a more pronounced deflection effect when loads are applied.
Elastic Modulus and Reinforcement
- The elastic modulus of the concrete and the arrangement of the reinforcement also play critical roles.
- The design typically aims to limit the deflection to prevent serviceability issues, such as cracking or unsightly movements.
Code Regulations
- Building codes often specify limits based on the shorter span to ensure that deflections remain within acceptable limits for both aesthetics and structural integrity.
- This is particularly crucial in two-way slabs where both spans contribute to the overall stability but the short span dictates the immediate response to loading.
Conclusion
- Therefore, the correct answer is that the limiting deflection of a 2-way slab is primarily a function of the short span (option B).
- Understanding this relationship is essential for effective design and ensuring the safety and performance of concrete structures.
In the context of reinforced concrete design, the limiting deflection of a 2-way slab is primarily influenced by the short span. Here’s a detailed explanation:
Deflection Behavior
- In a 2-way slab system, the deflection is a response to the weight of the slab and any applied loads.
- The deflection is governed by the stiffness of the slab, which is influenced by the span lengths.
Impact of Span Lengths
- The short span generally controls the behavior of deflection due to its geometry.
- A shorter span means the slab has less distance to bend, resulting in a more pronounced deflection effect when loads are applied.
Elastic Modulus and Reinforcement
- The elastic modulus of the concrete and the arrangement of the reinforcement also play critical roles.
- The design typically aims to limit the deflection to prevent serviceability issues, such as cracking or unsightly movements.
Code Regulations
- Building codes often specify limits based on the shorter span to ensure that deflections remain within acceptable limits for both aesthetics and structural integrity.
- This is particularly crucial in two-way slabs where both spans contribute to the overall stability but the short span dictates the immediate response to loading.
Conclusion
- Therefore, the correct answer is that the limiting deflection of a 2-way slab is primarily a function of the short span (option B).
- Understanding this relationship is essential for effective design and ensuring the safety and performance of concrete structures.
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In case of 2-way slab, the limiting deflection of the slab isa)primarily a function of the long spanb)primarily a function of the short spanc)independent of long or short spand)dependent on both long and short spansCorrect answer is option 'B'. Can you explain this answer?
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