## 21. In a combined footing for two columns carrying unequal loads, the maximum hogging bending moment occurs at

## 22. On piles, the drop must be at least

## 23. If a bent tendon is required to balance a concentrated load W at the centre of the span L, the central dip h must be at least

## 24. A singly reinforced concrete beam of 25 cm width and 70 cm effective depth is provided with 18.75 cm^{2} steel. If the modular ratio (m) is 15, the depth of the neutral axis, is

^{2}steel. If the modular ratio (m) is 15, the depth of the neutral axis, is

## 25. As per IS : 456, the reinforcement in a column should not be less than

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