Civil Engineering :: UPSC Civil Service Exam Questions
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What is the BOD5 at 20°C of a waste that yields an oxygen consumption of 2 mg/l from a 0.5% diluted sample ?
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The given figure shows roughly, the daily mass curves of supply to and demand from an elevated service reservoir (ESR). The minimum required capacity of the reservoir is given by
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Stresses obtained from Boussinesq's theory are considered reasonably satisfactory in foundation engineering because:
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A septic tank of 7 m3 in volume serves for 5 people. If the rate of accumulation of sludge is 70 litres per capita per year and sludge is removed when it occupies 50% of its volume, what is the cleaning interval of septic tank ?
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The load carrying capacity of an individual friction pile is 200 kN. What is the total load carrying capacity of a group of 9 such piles with group efficiency factor of 0.8 ?
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In which one of the following zones is a logarithmic spiral shape of failure surface assumed in the case of bearing capacity analysis of C-φ soils ?
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The optimum number of revolutions over which concrete is required to be mixed in a mixer machine, is
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A model of a weir made to a horizontal scale of 1/40 and vertical scale of 1/9 discharges 1 litre/sec. Then the discharge in the prototype is estimated as
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Which one of the following statements is the correct description of the structure of fibre board ?
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What is the normal depth in a wide rectangular channel carrying 0.5 m3/s discharge at a bed slope of 0.0004 and Manning's n = 0.01 ?
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A.
they represent stress distribution in homogeneous soil below loaded area
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B.
they account for anisotropy of soil properly
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C.
they give due regard to plastic behaviour of soils, particularly of settlement analysis
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D.
they consider elastic soil medium, and the intensity of allowable stresses below foundations in most cases are quit small and justify elastic solutions
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A.
Thin slices of superior quality of wood are glued and pressed on the surface of inferior wood
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B.
Steamed mass of wood dusts, wood wool and other vegetable fibres are pressed hard to a thickness varying from 3 mm to 12 mm
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C.
Thin and narrow wood shavings are soaked in a refractory binder material and pressed hard
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D.
Wood veneer backed by fabric mat
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