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Engineering Services Examination 2011: Civil Engineering Question Paper II (Conventional)

Find here the Civil Engineering (Conventional) Question Paper II of Engineering Services Examination 2011.

Mar 20, 2012 15:57 IST
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Solve the Civil Engineering (Conventional) Question Paper of 2011 Engineering Services Examination.

3. (a) A 20 mm thick laboratory soil sample reaches 60% consolidation in 32.5 second under double drainage condition. How much time will be required for a 10 m thick layer in the field to reach the same degree of consolidation, if the clay layer is sandwiched between a sandy layer and an impermeable layer ? 10

(b) Write a detailed note with neat labelled sketches on drainage as an integral part of gemetric design for highway, for any five cases. 10

(c) (i) What is crop calendar ? Illustrate the same.  3

(ii) Determine the discharge of a distributary at the tail end from the following data:

Gross Command Area (GCA)= 2000 ha

Cultivable Command Area (CCA) =70%

Losses beyond the tail end = 1 m3s-1

Kharif Rice          Irrigation Kor depth Kor period Intensity 19 cm 2.5 weeks 15%

Rabi   Wheat       Irrigation Kor depth Kor period Intensity 13.5 cm 4 weeks 30%

Sugarcane           Irrigation Kor depth Kor period Intensity 16.5 cm 4 weeks 10%

                                                                                                              7

(d) (i)  What are the advantages of differential surge tanks over simple and restricted orifice surge tanks ?  4

(ii) Estimate the maximum water hammer pressure generated in a rigid pipe of a 3 m dia pipe with an initial velocity of 3.0 ms-1 and the pipe is 8 km long. The downstream valve at the pipe end is closed in 4 seconds. The bulk modulus of water is

2.25 × 106 kPa and the mass density is 995.7 kg/m3.Also determine the critical time of closure.  6

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Engineering Services Examination 2011: Civil Engineering (Conventional) Question Paper II

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