Question
Download Solution PDFPick up the correct statement about the design of a slab of dimension 7 m × 3 m.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFConcept:
In the case of one-way slab, the slab bends primarily in one direction (shorter span), and reinforcement is provided accordingly.
According to IS 456:2000, a slab is considered a one-way slab if:
Longer span/Shorter span ≥ 2
In this question:
7/3 = 2.33 ≥ 2 ⇒ One-way slab
Reinforcement Rule for One-Way Slab:
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Main reinforcement is provided in the shorter direction (i.e., to resist bending in the longer span).
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Distribution steel (secondary reinforcement) is provided in the longer direction to take care of temperature, shrinkage, and crack control.
🔹 But note: the slab bends along the longer direction (i.e., reinforcement is placed perpendicular to the direction of bending – hence in the shorter span).
For slab of 7 m × 3 m:
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Main reinforcement = in 3 m direction (i.e., along the shorter span)
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Distribution steel = in 7 m direction
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