Two-way slabs differ from one-way slabs in that:
Choose the correct answer
They are only used in basements
They span in both directions (l_y/l_x ≤ 2) and carry load in both directions
They have no reinforcement in one direction
They are thicker than one-way slabs always
Correct Answer
B. They span in both directions (l_y/l_x ≤ 2) and carry load in both directions
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Two-way slab: l_y/l_x ≤ 2; load distributed in both directions; reinforcement required in both short and long span directions. One-way slab: l_y/l_x > 2; load mainly in short span; main bars in short span, distribution bars in long span. For two-way slabs, IS 456 provides moment coefficients (Table 26) based on support conditions.
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