SSC JE Civil Engineering 2017 Set 1 Solved Paper

Question : 166 of 200

Marks: +1, -0

The main reinforcement of a RC slab consists of 10 mm bars at 10 cm spacing. If it is desired to replace 10 mm bars by 12 mm bars, then the spacing of 12 mm bars should be ......... .

12 cm
14 cm
14.40 cm
16 cm

Validate

Solution:

Spacing

= \text"(Area of 1 Bar) × 1000" /\text" (Area of steel reqd.)"

S_1/S_2=A_1/A_2=d_1^2/d_2^2

⇒S_2=10×12^2/10^2=14.4\cm

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