For a continuous floor slab supported on beams, the ratio of end span...
For a continuous floor slab supported on beams, the ratio of end span length and intermediate span length is 0.9
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For a continuous floor slab supported on beams, the ratio of end span...
Explanation:
The ratio of end span length and intermediate span length is an important factor to consider in the design of a continuous floor slab supported on beams. This ratio is defined as the ratio of the length of the span at the end of the slab to the length of the span in the middle of the slab.
The correct answer is option 'D', which states that the ratio is 0.9. This means that the end span is 90% of the length of the intermediate span.
Reasoning:
The design of a continuous floor slab supported on beams is a complex process that involves several factors, including the span length ratio. The following are the reasons for the correct answer:
1. Structural efficiency: The span length ratio affects the structural efficiency of the slab. If the ratio is too large, the slab will be over-designed, resulting in higher costs. On the other hand, if the ratio is too small, the slab may not be structurally sound.
2. Deflection: The span length ratio also affects the deflection of the slab. If the ratio is too large, the deflection will be excessive, resulting in a poor performance of the slab. If the ratio is too small, the deflection will be too small, resulting in a rigid and uncomfortable floor.
3. Load distribution: The span length ratio affects the distribution of loads on the slab. If the ratio is too large, the loads will be concentrated at the ends of the slab, resulting in higher stress and potential failure. If the ratio is too small, the loads will be evenly distributed, resulting in a more efficient use of the slab.
Conclusion:
In conclusion, the ratio of end span length and intermediate span length is an important factor to consider in the design of a continuous floor slab supported on beams. The correct answer is option 'D', which states that the ratio is 0.9. This means that the end span is 90% of the length of the intermediate span. This ratio ensures structural efficiency, proper deflection, and even load distribution on the slab.