SDD - III Unit Test 1

In prestressed concrete members, the steel is under [C403.1, BTL - 1]

• compression
• tension
• torsion

In axially prestressed members, the concrete is under [C403.1, BTL - 1]

• tension
• compression
• torsion

Prestressing is possible by using [C403.1, BTL - 1]

• mild steel
• high-strength deformed<br />bars
• high-tensile steel

Prestressing steel has an ultimate tensile strength nearly [C403.1, BTL - 1]

• twice that of HYSD bars
• thrice that of mild steel reinforcemen<br />ts
• four times that of HYSD bars

Prestresssing is economical for the members [C403.1, BTL - 1]

• long sapn
• medium span
• short span

linear prestressing is adopted in [C403.1, BTL - 1]

• circular tanks
• pipes
• beams

Circular prestressing is advanageous in [C403.1, BTL - 1]

• beams
• columns
• pipes and<br />tanks

Pretsressing wires in electric poles are [C403.1, BTL - 1]

• concentric
• eccentric
• parabolic

the grade of concrete for prestressed memberes should be in the range of [C403.1, BTL - 1]

• M20 to M30
• M80 to<br />M100
• M30 to M60

High strength mixes should have a water/cement ratio of [C403.1, BTL - 1]

• 0.6 to 0.8
• 0.3 to 0.4
• 0.2 to 0.3