Steel and concrete are same Steel is lower than that for concrete Steel is higher than that for concrete None of the above

Answer Discuss in Comment

28 liters 34 liters 30 liters 32 liters

± 15 % of average ± 5% of average ± 10% of average ± 20% of average

Inversely proportional to compressive strength Directly proportional to compressive strength Inversely proportional to square root of compressive strength Directly proportional to square root of compressive strength

Less than 12 Less than 18 Between 18 and 24 More than 24

15 dia 20 dia 24 dia 30 dia

2% 6% 8% 4%

Lower tensile strength of steel Higher compressive strength of concrete Lower compressive strength of concrete Higher tensile strength of steel

Increased by 25% for bars in compression Decreased by 25% for bars in compression Increased by 10% for bars in compression Decreased by10% for bars in compression

6 mm 8 mm 12 mm 16 mm

"Scientists dream about doing great things. Engineers do them."