CONCRETE TECHNOLOGY AND DESIGN OF CONCRETE STRUCTURES QUIZ

more than 1 m

600 mm

750 mm

900 mm

10 mm

20 mm

30 mm

15 mm

0.67 fy

0.37 fy

0.87 fy

0.57 fy

0.8% to 4%

0.15% to 2%

0.8% to 8%

0.8% to 6%

50%

40%

60%

70%

None of these

front face only

inner face only

both front face and inner face

there will be no differential settlement

the settlement of exterior columns will be more than interior columns

the settlement of interior columns will be more than exterior columns

there will be no settlement of columns

3

2

2.5

1.5

For heavy loads and large spans in buildings or bridges, post-tensioning system is cheaper than pretensioning system

The loss of prestress is more in pre-tensioning system than in post-tensioning system.

Pretensioning system has greater certainty about its durability.

None of these

only (i)

only (ii)

both (ii) and (iii)

both (i) and (iv)