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Area of tensile steel per meter width of a reinforced concrete slab is 335 sq mm. If 8 mm rods are used as reinforcement, then centre to centre spacing of the reinforcement in mm is ________
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- 45 to 55
- 145 to 155
- 125 to 135
- 105 to 195
Correct Option: B
Total area of steel is 335 mm2
Area of 8 mm rod = π r 2 = 3.14 × 4 × 4 = 50.24 mm2
| Total no. of rods spread in 1m of width = | = 6.67 | |
| 50.24 |
So, 7 rods are spread in 1 m of width.
So, distance between two rods will be 1m / 6.67 = 150 mm
