Quiz: Civil Engineering
Each question carries 1 mark
Negative marking: 1/4 mark
Time: 10 Minutes
Q1. The maximum allowable slenderness ratio for members carrying compressive load due to wind and seismic force only is
Q2. Shear span is defined as the zone where:
(a) bending moment is zero
(b) shear force is zero
(c) shear force is constant
(d) bending moment is constant
Q3. Lap length in compression shall not be less than
(a) 15 ϕ
(b) 20 ϕ
(c) 24 ϕ
(d) 30 ϕ
Q4. Unit hydrograph method is usually adopted for estimating floods when the catch is
(a) less than 5000 km²
(b) more than 7500 km²
(c) more than 10,000 km²
(d) none of these
Q5. As per Environmental protection Act, 1986, the noise level in the industrial area during day should not be more than:
(a) 75 dB
(b) 65 dB
(c) 45 dB
(d) 55 dB
Q6. While estimating for plastering, usually no deduction is made for –
(a) Ends of beams
(b) Small opening upto 0.5 sq. m.
(c) End of rafters
(d) All the above
Q7. IRC recommendation for maximum width of a vehicle is
(a) 1.75 m
(b) 2.00 m
(c) 2.44 m
(d) 4.88 m
Q8. The working stress for structural steel in tension is of the order of
(a) 15 N/mm²
(b) 75 N/mm²
(c) 150 N/mm²
(d) 750 N/mm²
Q9. The lime mortar is made by:
(a) Quick lime
(b) Fat lime
(c) White lime
(d) None of the above
Q10. Oleic acid may be used in the manufacture of:
(a) White cement
(b) Hydrophobic cement
(c) Anti-bacterial cement
(d) Portland pozzolana cement
Sol. maximum slenderness ratio
|S.No.||Description||Maximum Slenderness ratio|
|(1)||A member carrying compressive load resulting from dead load & live load||180|
|(2)||A member subjected to compressive force resulting from combinations with wind load & earthquake load provided the deformation of such member does not effect any port of the structure.||250|
|(3)||Compressive flange of a beam laterally restrained against torsional buckling||300|
Sol. Shear span is the distance from the point of application of concentrated force to its respective reaction force. throughout shear span the shear force is constant.
“Shear span is defined as the zone where shear force is constant.”
Sol. → (Lap length in flexure tension)/(Ld (or)30ϕ)_greater
→ (Lap length in Direct tension)/(2Ld (or)30ϕ)_greater
→ (Lap length in compression)/(Ld (or)24ϕ)_greater
Sol. Unit hydrograph method is usually adopted for estimating floods when the catchment area less than 5000 km².
Sol. as per environmental protection ACT, 1986, the noise level for different zones are following –
Plastering is measured in terms of m².If,
(a) opening area < 0.5 m² (No deduction is applied)
(b) opening area is between 0.5 m² – 3m², then (single side deduction is applied)
(c) opening area > 3 m², then (double side deduction is applied)
Sol. As per IRC
(a) Maximum width of vehicle = 2.44 m.
(b) Maximum height of vehicle = 4.75 m.
(c) Maximum length of vehicle = 18 m.
(d) Maximum length of vehicle = 52.2 Tonn.
Sol. working (Permissible) stress for steel in Tension = 0.60 fy
= 0.60 ×250
= 150 N/mm²
Sol. Fat lime contains about 95% of Calcium oxide (CaO).
→ Lime mortar is also made by Hydraulic lime. It contains about 5-30% amount of clay.
Sol. Hydrophobic cement → A film of stearic acid and oleic acid is formed which reduces the rate of deterioration of cement during long storage.