CONCRETE TECHNOLOGY AND DESIGN OF CONCRETE STRUCTURES QUIZ

at a distance equal to effective depth of footing from the edge of the wall

halfway between the middle and edge of the wall

at the edge of the wall

at the middle of the wall

(i) and (iv)

(iii) and (iv)

(i) and (ii),

(ii) and (iii)

20 kN/cm²

200kN/mm²

200 kN/cm²

2xl06N/cm²

workability admixtures

accelerators

air entraining agents

retarders

4

9

2

8

to increase it

either to decrease or to increase it

to keep it unchanged

to decrease it

inversely proportional to square root of compressive strength

directly proportional to square root of compressive strength

directly proportional to compressive strength

inversely proportional to compressive strength

20%

5%

10 %

15%

(i) and (ii) are correct

only (ii) is correct

only (iv) is correct

(iii) and (iv) are correct

dependent on grade of concrete also

0.40 d

0.45 d

0.35 d