Related Questions

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
How does the strength of concrete differ with age of concrete?
A Increases
B Decreases
C No effect
D Increases, then decreases
In what ratio must a mixture of 11% sugar strength be mixed with that of 25% sugar strength so as to get a new mixture of 13% sugar strength?
A 5:1
B 6:1
C 7:2
D 10:3
If a is the offset of concrete bed in cms, and d is the depth of concrete bed in cms, then
A d = 0.445 a
B d = 0.557 a
C d = 0.775 a
D None of these
The maximum shear stress (q) in concrete of a reinforced cement concrete beam is
A $$\frac{{{\text{Shear force}}}}{{{\text{Lever arm}} \times {\text{Width}}}}$$
B $$\frac{{{\text{Lever arm}}}}{{{\text{Shear force}} \times {\text{Width}}}}$$
C $$\frac{{{\text{Width}}}}{{{\text{Lever arm}} \times {\text{Shear force}}}}$$
D $$\frac{{{\text{Shear force}} \times {\text{Width}}}}{{{\text{Lever arm}}}}$$
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
High strength concrete is used in pre-stressed member
A To overcome high bearing stresses developed at the ends
B To overcome bursting stresses at the ends
C To provide high bond stresses
D All the above
Cube strength of controlled concrete to be used for pretensioned and post-tensioned work respectively should not be less than
A 35 MPa and 42 MPa
B 42 MPa and 35 MPa
C 42 MPa and 53 MPa
D 53 MPa and 42 MPa
Steel rods are used in reinforced concrete to increase its __________ strength.
A Shear
B Tensile
C Compressive
D None of these
The minimum cube strength of concrete used for a pre-stressed member, is
A 50 kg/cm2
B 150 kg/cm2
C 250 kg/cm2
D 350 kg/cm2

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