Related Questions

If the main reinforcement of the slab is parallel to a T-beam, the transverse reinforcement at mid span of the slab is provided at least __________ of main reinforcement.
A 40%
B 50%
C 60%
D 70%
Steel rods are normally used for concrete reinforcement because concrete and steel have almost equal
A Tensile strength
B Compressive strength
C Young's modulus
D Thermal co-efficient of expansion
For the supply of materials for concrete, form work reinforcing and placing of concrete, removal of form work and curing of concrete, number of bar(s) required on bar chart, is
A 1
B 2
C 3
D 4
In prestressed concrete structures the primary problem is damaged caused to ____________
A Bridge decks
B Spans
C Anchorages
D Ridges
Maintaining prestressed concrete structures of various types in a fit and serviceable condition is primary function of ____________
A Maintenance engineer
B Design engineer
C Surface engineer
D Structural engineer
Prestressed concrete structures showing visible signs of distress in the form of ____________
A Surface cracks
B Patterns
C Patches
D None of the mentioned
In prestressed concrete
A Forces of tension and compression change but lever arm remains unchanged
B Forces of tension and compression remains unchanged but lever arm changes with the moment
C Both forces of tension and compression as well as lever arm changes
D Both forces of tension and compression as well as lever arm remains unchanged
In R.C. sewer pipes, the percentage longitudinal reinforcement to the cross-sectional area of concrete is kept
A 10.0
B 5.0
C 2.0
D 0.25
In a doubly-reinforced beam if ‘c’ and ‘t’ are stresses in concrete and tension reinforcement, ‘d’ is the effective depth and ‘n’ is depth of critical neutral axis, the following relationship holds good
A $$\frac{{{\text{mc}}}}{{\text{t}}} = \frac{{\text{n}}}{{{\text{d}} - {\text{n}}}}$$
B $$\frac{{{\text{m}} + {\text{c}}}}{{\text{t}}} = \frac{{\text{n}}}{{{\text{d}} + {\text{n}}}}$$
C $$\frac{{{\text{t}} + {\text{c}}}}{{\text{m}}} = \frac{{{\text{d}} + {\text{n}}}}{{\text{n}}}$$
D $$\frac{{\text{m}}}{{{\text{t}} + {\text{c}}}} = \frac{{\text{n}}}{{{\text{d}} - {\text{n}}}}$$
How does the strength of concrete differ with age of concrete?
A Increases
B Decreases
C No effect
D Increases, then decreases

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