construction technology and management part€¦ · 5. explain about the hoisting and earthwork...

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IV B.Tech I Semester Regular/Supplementary Examinations, October/November - 2017

CONSTRUCTION TECHNOLOGY AND MANAGEMENT (Civil Engineering)

Time: 3 hours Max. Marks: 70

Question paper consists of Part-A and Part-B

Answer ALL sub questions from Part-A

Answer any THREE questions from Part-B

*****

PART–A (22 Marks)

1. a) What is the significance of development of bar chart? [4]

b) What do you understand by a dummy? What are its uses? [4]

c) Discuss the different types of compaction rollers. [4]

d) What are the merits and demerits of Clamshell buckets? [4]

e) Discuss the application of jaw crushers. [3]

f) Describe in briefly about the piling [3]

PART–B (3x16 = 48 Marks)

2. a) Explain why planning is necessary? Describe various steps for planning a

project. [8]

b) Explain in detail about the functions and limitations of PERT and CPM

techniques. [8]

3. a) Draw a PERT network for the following and find expected mean time, variance

and SD of the project.

Activity Three-time estimates (days)

1-2 6-9-18

1-3 5-8-17

2-4 4-7-22

3-4 4-7-16

4-5 4-10-22

2-5 4-7-10

3-5 2-5-8

[8]

b) Explain in detail about the allocation of resources. [8]

4. How do you govern the selection of wheel type or crawler type tractor on a job?

Compare their applications. [16]

5. a) On what basis bull dozers are classified? Explain. Discuss their applications. [8]

b) Briefly explain about grading. [8]

6. a) What do you mean by concrete mixer? Explain the different types of concrete

mixers and its application. [8]

b) Discuss the application of impact crushers. [8]

7. a) Explain the concept of prefabrication in construction. How it is essential to a

large scale project? [8]

b) Describe the quality control and safety engineering in construction. [8]

Code No: RT41013 Set No. 1 R13

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*****

PART–A (22 Marks)

1. a) What is a mile stone? In what terms are they superior to bar chart method of

representation? [4]

b) Write about the Event and Activity. [3]

c) How do you find the capacity of trucks? Discuss it. [4]

d) What are the different types of scrapers and write its purpose [4]

e) What are the applications of gyratory crushers? [4]

f) Discuss pile driving equipment [3]


2. a) Discuss the roles of Project Manager in detail. [8]

b) Explain in detail about the components of Networks. [8]

3. a) Discuss the cost-duration analysis in PERT. [8]

b) Distinguish between crashing for optimum cost and crashing for optimum

resources [8]

4. a) Mention the various types of earthwork equipment and their uses. [8]

b) Discuss about the rear dump truck and its significance. [8]

5. a) What are the differences between graders and scrapers? Discuss in detail. [8]

b) List out the various factors governing the selection of earthmoving equipment. [8]

6. a) Describe the different types of crushers and their uses for each. [8]

b) Discuss briefly about the screening of aggregate. [8]

7. a) Explain in detail about the different types of form works and their applications? [8]

b) Explain the methods of piling. [8]


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*****

PART–A (22 Marks)

1. a) What is the purpose of planning? [3]

b) What are the necessary data required for updating [4]

c) What are the limitations of Earthmoving equipments? [4]

d) What are the uses of scrapers? [3]

e) Discuss about the mixing and placing of concrete. [4]

f) Write note on safety engineering. [4]


2. a) Discuss in detail about the scheduling and monitoring. [8]

b) Differentiate clearly between most likely time estimate (tL), mean time (tm) and

expected time (tE). [8]

3. a) The direct cost of the project is Rs 3000 per week. Determine the optimum duration of

the project and the corresponding minimum cost. Draw time scaled version of network.

Activity Normal duration

(weeks)

Normal cost

(Rs`)

Crash duration

(weeks)

Crash cost

(Rs`)

1-2 6 7000 3 14500

1-3 8 4000 5 8500

2-3 4 6000 1 9000

2-4 5 8000 3 15000

[8]

b) Discuss in brief the stepwise resources allocation problem. [8]

4. a) Describe about the trucks and handling equipment. [8]

b) What is meant by cycle time in trucks and how do you calculate the truck

production? [8]

5. Explain about the Hoisting and Earthwork equipment in detail. [16]

6. a) How do you done the mixing and placing of concrete, explain it. [8]

b) Campare Jaw and Gyratory Crushers based on their use and application. [8]

7. a) Describe the fabrication erection in detail. [8]

b) Explain the difference between earthwork and formwork. [8]


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*****

PART–A (22 Marks)

1. a) What is meant by work breakdown structure? [4]

b) Write about Network rules and graphical guidelines for network [4]

c) Discuss cost analysis. [3]

d) What are the uses of bulldozers? [4]

e) What do you understand by screening of aggregate? [4]

f) What are the uses of quality control? [3]


2. a) Discuss in brief the role of management in project execution [8]

b) What are the main objectives and applications of construction management? [8]

3. a) Determine critical path for the following

[8]

b) Describe about the updating in PERT Technique. [8]

4. a) Write about the compaction equipment and various types of rollers. [8]

b) What are economical considerations for the selection earthwork equipment?

Discuss it. [8]

5. a) Describe the difference between hoists and cranes with their applications. [8]

b) Explain in detail about the clamshell buckets and its applications. [8]

6. a) How the selection of crushing equipment is done? Explain. [8]

b) Name the equipments needed for compacting concrete and explain their uses in

detail. [8]

7. Explain in detail about the different construction methods. Discuss their merits

and demerits. [16]


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ENVIRONMENTAL ENGINEERING – II (Civil Engineering)





*****

PART–A (22 Marks)

1. a) What are the merits of Water Conservation System? [3]

b) What are the different components of Pumping Unit? [4]

c) What is the principle of Sedimentation in wastewater treatment? [4]

d) What do you mean by secondary treatment? [3]

e) What is nitrification process in the wastewater treatment? [4]

f) What do you mean by self purification of streams? [4]


2. a) What are the advantages of the egg-shaped section, and under what conditions of

flow, does it become more useful? Will you recommend its use for sanitary

sewers, and if not, why?

[8]

b) Calculate from Manning’s formula the diameter of a circular vitrified clay sewer

(n = 0.013), which will just carry 0.05 cumecs, when flowing full at a slope of 1

in 1000.

[8]

3. a) State the functions of a manhole. Describe with the help of neat sketches the

components of a manhole.

[8]

b) Explain various systems of sanitary plumbing. Write down the main

characteristics of each system.

[8]

4. a) Write a detailed note on various design parameters, such as settling velocity,

overflow rate and detention time.

[8]

b) The effluent from a primary settling tank is applied to a standard rate filter at the

rate of 3 million liters per day, having a BODs of 175 mg/l. determine the depth

and volume of filter, adopting a surface loading of 2000 l/m2/day and an organic

loading of 150 g/m3/day. Also, determine the efficiency of such filter unit, using

NRC formula.

[8]

5. a) Give the flow diagram for the “activated sludge process” and describe its

working.

[8]

b) Design a single-stage trickling filter to yield an effluent BODs of 30 mg/l. The

influent BODs following primary clarification is 160 mg/l and the flow is 104

m3/day. Maintain a hydraulic loading rate of 20 m/day and a filter depth of 2 m.

[8]

6. a) Explain the components of a septic tank with a neat sketch. [8]

b) What are the design criteria for design of septic tank? [8]

7. a) What do you understand by thickening (or) concentration of sludge? List the

various methods of sludge thickening. Describe with the help of neat sketch

gravity-sludge thickener.

[8]

b) Write note on Sludge Conditioning. Why elutriation is necessary prior to

Chemical Conditioning.

[8]


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IV B.Tech I Semester Regular/supplementary Examinations, October/November - 2017






*****

PART–A (22 Marks)

1. a) What are the demerits of old conservancy system? [3]

b) What are the disadvantages of one pipe system of plumbing? [4]

c) What is the importance of BOD in wastewater treatment? [4]

d) What is the principle of activated sludge process? [4]

e) How the phosphates can be removed from the wastewater? [4]

f) What are the disposal methods of sludge? [3]


2. a) What are the different hydraulic elements and the relation that exists between

them, which govern the discharge through a sewer?

[8]

b) A 30 cm diameter sewer an invert slope of 1 in 400 is flowing 1/3rd

of the full

depth. Calculate the velocity and the rate of flow in the sewer. Is it self-cleaning

velocity? Use n=0.015.

[8]

3. a) What are the sewer appurtenances? Explain with neat sketch the working and

construction of man hole.

[8]

b) Write a note on sanitary ventilation? [8]

4. a) Describe in brief various unit operations for chemical clarification along with the

design recommendations.

[8]

b) Write a note on removal of suspended solids and BOD by plain sedimentation in

primary settling tank.

[8]

5. a) What do you understand by secondary treatment (or biological treatment) of

wastewater? Enumerate various treatment techniques used for biological

treatment.

[8]

b) Explain the construction and working of intermittent sand filters. What are its

advantages and disadvantages?

[8]

6. a) Write a note on anaerobic treatment of wastewater. [8]

b) Draw a neat sketch of septic and explain its working. [8]

7. a) Explain the self purification process of rivers and the various stages of oxygen

sag curve.

[8]

b) Discuss the need for sludge treatment and explain the various stages of sludge

treatment.

[8]


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*****

PART–A (22 Marks)

1. a) What are the advantages of separate system? [3]

b) What are the advantages of two pipe system of plumbing? [4]

c) Differentiate BOD and COD. [3]

d) What do you mean by suspended growth process? [4]

e) What is the working principle of septic tank? [4]

f) What do you mean by sludge thickening? [4]


2. a) Draw two suitable surface drain sections and explain their advantages and

disadvantages.

[8]

b) A sanitary sewer is to serve a uniformly distributed population of 10,000 along a

1.000m road. The average ground slope for first 500 m is 1 in 400, and for the

remaining as 1 in 900. Design the sewer. Give expected peak, average and

minimum velocities. Make suitable assumptions, and state them clearly.

[8]

3. a) Enumerate the different methods of plumbing and explain any one in detail. [8]

b) Write a note on the Building drainage system. [8]

4. a) What do you understand of sedimentation of wastewater? Describe in brief

various types of settlings.

[8]

b) Design a primary sedimentation tank for a proposed sewage treatment plant of

120 ML/d capacity.

[8]

5. a) Differentiate clearly between attached growth processes and suspended growth

processes. List various treatment techniques falling under each such process.

[8]

b) State advantages and disadvantages of a conventional trickling filter. [8]

6. a) Write a note on disposal methods of septic tank effluent. [8]

b) Design a septic tank with neat sketch for a hostel having 250 students. Design

sewage flow is 60 Lpcd. What would be the size of the dispersion trench, if the

effluent from the septic tank is to be discharged in it? Draw a neat sketch of the

septic tank with dispersion trench.

[8]

7. a) What do you understand by Oxygen-Sag Curve? Derive Streeter-Phelps

Equation.

[8]

b) What is Sewage Farming? What are its advantages over the method of disposal

of sewage by Dilution?

[8]


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*****

PART–A (22 Marks)

1. a) What are the advantages of Combined system? [3]

b) Enumerate the systems of plumbing and mention their suitability. [4]

c) What are the general characteristics of sewage? [4]

d) What do you mean by attached growth process? [4]

e) What are the disposal methods of septic tank effluent? [4]

f) What is sewage sickness? [3]


2. a) What do you mean by variation in flow of sewage? Explain average flow, dry

weather flow, and maximum flow.

[8]

b) A 30 cm diameter sewer having an invert slope of 1 in 150 was flowing full.

What would be the velocity of flow and discharge? (n=0.013). Is the velocity

self cleansing? What would be the velocity and the discharge when the same is

flowing 0.20 and 0.8 of the full depth?

[8]

3. a) Draw a layout of pumping station and explain the different components. [8]

b) What are the different types pumps used in the wastewater handling and explain

their suitability?

[8]

4. a) What is a Grit Chamber? Describe with the help of neat sketches a horizontal

flow grit Chamber.

[8]

b) For a wastewater sample, the 5 day BOD at 200

C is 200 mg/l and is 67% of the

ultimate. What will be 4-day BOD at 300

C.

[8]

5. a) Give various flow diagrams used for single stage and two stage trickling filters.

How do you determine the efficiency of these, using Rankin’s equation?

[8]

b) Give the flow diagram for the “activated sludge process” and describe its

working.

[8]

6. a) What do you understand by physical Unit operations? Write a note on

applications of various physical Unit operations employed in Sewage treatment.

[8]

b) Design a Septic tank for a hostel with the following data:

• Number of Users = 150

• Peak discharge = 205 lpm

• Desludging period = 1 year.

Assuming the population rate as 20 minutes per cm design dispersion trench

system for thedisposal of the septic tank effluent.

[8]

7. a) Write note on Sludge Conditioning. Why elutriation is necessary prior to

Chemical Conditioning.

[8]

b) What do you understand by thickening (or) concentration of sludge? List the

various methods of sludge thickening. Describe with the help of neat sketch

gravity-sludge thickener?

[8]


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GROUND IMPROVEMENT TECHNIQUES (Civil Engineering)





*****

PART–A (22 Marks)

1. a) Discuss the principle of vertical drains in soil improvement. [4]

b) Discuss the uses of dewatering process in soils. [4]

c) List the admixtures used in clay soil stabilization. [4]

d) Discuss the importance of soil nailing. [3]

e) Write the classification of geosynthetics. [4]

f) Write the objectives of grouting. [3]


2. a) What is dewatering? Explain the practical situation and purpose with examples

where the dewatering techniques are employed commonly. [8]

b) Explain with neat sketches the electro osmosis technique of dewatering from

soil. [8]

3. a) What is grouting? Explain the engineering benefits of grouting of soils. [8]

b) Describe the jet grouting technique of improving the soil with the neat sketches. [8]

4. What is the difference between shallow compaction and deep compaction?

Explain in detail with neat sketches the vibroflotation technique of densification

of deeper layers of granular soils and its quality control. [16]

5. What is the difference between chemical stabilization and mechanical

improvement of soil? Explain in detail physic chemical reactions in stabilization

of clay with lime. Also discuss the improvement of clay soil properties when

lime is added. [16]

6. What are the components of reinforced earth wall? Discuss the load transfer

mechanisms of reinforced earth walls. Also discuss the requirements of soil

which can be used in reinforced earth wall constriction. [16]

7. a) What are the different types of geotextiles? Discuss the differences between

geogrids and geocells. [8]

b) Discuss with neat sketches how effective the geocells in transferring the load

onto the soft subgrade soil and also controlling the settlements. [8]

Code No: RT41016

Set No. 1 R13

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*****

PART–A (22 Marks)

1. a) Define preloading and discuss how settlement is controlled in soft clays. [4]

b) List the types of dewatering systems. [4]

c) List various soil stabilization methods. [4]

d) Write the principles of reinforced earth. [3]

e) Write the applications of gabions. [3]

f) List various grouts and their basic characteristics. [4]


2. Write short notes on the following with reference to dewatering: (i) Horizontal

wells (ii) Foundation drains and (iii) Blanket drains [16]

3. a) Write suitable grouting techniques suitable to improve silty sand soil. List the

different stabilizers used in grouting. [8]

b) Discuss in detail how the permeation grouting and jet grouting are conducted at

the site and their effectiveness in improvement of soil properties. [8]

4. List various in-situ densification methods of deep soil layers.

It is proposed to construct large oil tanks for storage of oil at Vizag port in the

water area by filling with soft reclaimed soil. From the SPT data available at the

reclaimed soil site, it is noticed that the top 12m soil is soft clay (SPT “N’ = 2 to

4) and below this up to a depth of 20m there is a dense soil (SPT “N’ = 22 to

28). For the above soil conditions, suggest whether soil improvement is

required or not. If required what extent the soil is required to improve? Explain

any one of the suitable ground improvement techniques with neat sketches. The

required safe bearing capacity is 175 kPa. [16]

5. What are the different admixtures that are used in expansive clay soil

stabilization? Discuss plasticity, swelling and strength characteristics of fly ash

treated black cotton soils. Also discuss how calcium chloride modifies the soil

characteristics. [16]

6. Discuss the assumptions and principles of reinforced earth mechanism. Explain

the design steps of reinforced earth walls. [16]

7. What are the functions of geotextiles? Explain their use in earth dam and road

construction works. [16]


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*****

PART–A (22 Marks)

1. a) Write the sand columns installation procedure. [3]

b) Write the effective dewatering systems in cohesive soils. [3]

c) Discuss the effectiveness of utilizing granulated blast furnace slag in the road

construction. [4]

d) Discuss the bearing capacity failure in reinforced earth wall. [4]

e) List various properties of geosynthetics. [4]

f) Discuss the factors that influence the grout requirement. [4]


2. Why dewatering is required in soil? Explain with neat sketches dewatering

using sumps and interceptor ditches. Also discuss dewatering in soil by single

and multistage well point systems. [16]

3. Explain in detail with the equipments and grout materials how grouting by

hydraulic fracturing is carried out in soils and rocks. Discuss any one suitable

post grout quality control tests employed. [16]

4. a) What are the shallow soil compaction equipments? Discuss their suitability for

different soils. [8]

b) Differentiate the effects of standard and modified compaction on soils. [8]

5. What are the different methods employed to improve the soft clay soils. Explain

with neat sketches the preloading and stone column techniques. [16]

6. a) What are the various soil stabilization techniques? Write their suitability with

respect to the soil type. [8]

b) Discuss the gradation limits for soil – cement stabilization and explain its

construction procedure. [8]

7. a) Discuss the advantages and applications of reinforced earth structures with neat

sketches. [8]

b) Discuss the necessary requirements of geotextiles when used for different

hydraulic & mechanical functions. [8]

Code No: RT41016

Set No. 3 R13

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*****

PART–A (22 Marks)

1. a) Write the specifications of dynamic compaction. [3]

b) Write the effective dewatering systems in cohesionless soils. [3]

c) Write the effectiveness of bitumen in soil stabilization. [4]

d) Discuss the sliding failure in reinforced earth wall. [4]

e) Write a note on woven geotextiles and non woven geotextiles. [4]

f) What is the difference in single, double and triple fluid jet grouting? [4]


2. a) Discuss the effectiveness of various well point dewatering systems with respect

to the in-situ soil conditions. [8]

b) What is the working principle of vacuum well point system? Explain with neat

sketch the process of dewatering carried out in-situ by vacuum well point

system. [8]

3. a) Explain how grouting is effective in improving the engineering properties of

soil. [8]

b) Discuss in detail the grouting with ‘soil-cement mixes’, ‘cement’, and ‘lime’

grouts. [8]

4. Compare and contrast with neat sketches the effectiveness of vibroflotation over

compaction piles to densify the granular soils. [16]

5. Explain working principles and soil improvement mechanism using ‘Rammed

Stone Column’ and ‘Vibro-Replacement’ methods. Also highlight the typical

characteristics and the relative effectiveness of both the methods. [16]

6. a) How effective is lime stabilization in stabilizing the clay soils? Discuss the

chemical reactions that take place in lime treated soils. [8]

b) What is bituminous stabilization? Discuss the necessary requirements to

achieve best results in soil-bitumen stabilization. [8]

7. a) What is reinforced earth structure? Discuss its practical suitability with

limitations. [8]

b) Write the functions of geotextiles in an earth dam. [8]

Code No: RT41016

Set No. 4 R13

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REMOTE SENSING AND GIS APPLICATIONS (Civil Engineering)





*****

PART–A (22 Marks)

1. a) List the features of SPOT. [3]

b) Write a short note on Unsupervised Classification. [4]

c) What you understand by GIS? [3]

d) Write a short note on Edge Matching. [4]

e) List few Urban applications of GIS. [4]

f) Write the importance of RS & GIS in Flood Monitoring. [4]


2. a) Explain the different divisions of electromagnetic spectrum with reference to

wavelengths. [8]

b) Discuss the various digital image data formats. [8]

3. a) Discuss the various elements of Visual Interpretation techniques. [8]

b) Discuss the various image enhancement techniques. [8]

4. a) Discuss in brief various applications of GIS in civil engineering. [8]

b) Discuss the various components of GIS in detail. [8]

5. a) Discuss the concept of Network Analysis with suitable examples. [8]

b) Discuss the various raster overlay operations. [8]

6. Discuss the role and advantages of Remote Sensing and GIS in Land Use and

Land Cover Mapping. [16]

7. Discuss various applications of Remote Sensing and GIS in Watershed

Management. [16]


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*****

PART–A (22 Marks)

1. a) Define Remote Sensing. [3]

b) List the various elements of Visual Interpretation. [4]

c) Differentiate between spatial and non spatial data. [4]

d) Write a short note on Logical operators used in GIS. [3]

e) Define Land Use and Land Cover. [4]

f) How Remote sensing and GIS can be used in identifying ground water potential

zones. [4]


2. a) Explain in detail the spectral signatures of vegetation and soil. [8]

b) State the concept of resolution? Explain the spatial and radiometric resolutions

in detail. [8]

3. a) Differentiate between Supervised and Unsupervised Classification techniques. [8]

b) Discuss various image enhancement techniques. [8]

4. a) Explain in detail the significance of Four M’s of GIS with the help of a

schematic representation. [8]

b) Discuss the various raster data models used in GIS. [8]

5. a) Discuss the various Vector Overlay operations. [8]

b) Explain how GIS is useful in determining Optimum route between two

locations. [8]

6. a) Describe the applications of Remote Sensing and GIS in agriculture. [8]

b) What is the role of Remote Sensing and GIS in geology? [8]

7. Discuss the role of Remote Sensing and GIS in continuous monitoring of

Floods with a case study. [16]


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PART–A (22 Marks)

1. a) Define Spatial resolution. [3]

b) Explain False Colour Composite. [4]

c) Discuss the advantages of GIS. [4]

d) Explain the concept of buffering in GIS. [4]

e) List few RS & GIS applications in agricultural sector. [4]

f) Explain the role of remote sensing in identifying artificial recharge locations. [3]


2. a) Explain in the Remote Sensing components. [8]

b) Explain different types of platforms. [8]

3. a) Write about multi spectral image classification. [8]

b) Explain in detail about the digital image processing. [8]

4. Discuss various types of Map Projections used in GIS. [16]

5. a) Discuss the various types of data representation in GIS with suitable examples. [8]

b) Discuss the errors in GIS. [8]

6. a) Discuss the use of Remote Sensing and GIS in forestry applications. [8]

b) Discuss the use of Remote Sensing and GIS in Geomorphology. [8]

7. Explain the role of Remote Sensing and GIS in water resources applications in

today’s scenario. [16]


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*****

PART–A (22 Marks)

1. a) List out the latest remote sensing satellites launched by India. [4]

b) Differentiate between Supervised and Unsupervised Classification. [4]

c) List out the possible errors in GIS. [4]

d) Write a short note on Conditional expressions. [4]

e) Explain how GIS can be used in reducing road accidents. [3]

f) List out the satellites which can be used for Flood Monitoring. [3]


2. Explain in detail about different types of sensors based on orbit, energy source

and data capture. [16]

3. a) Explain the following Image Enhancement Techniques

(i) Image Reduction & Magnification

(ii) Contrast Enhancement [8]

b) What are the different types of data products? [8]

4. Explain the role of importance of GIS in civil engineering point of view. [16]

5. a) Differentiate between Raster and Vector Overlay Operations. [8]

b) What is data compression? Discuss any two methods. [8]

6. Discuss the various Urban applications of Remote Sensing and GIS. [16]

7. Explain how GIS and Remote Sensing can be used for identifying the sites for

artificial recharge structures. [16]


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PART–A (22 Marks)

1. a) What is crop rotation? [3]

b) Distinguish between ridge canal and contour canal [3]

c) Define a canal fall. [4]

d) Define consumptive use and list out methods of its estimation. [4]

e) What are the zones of storage? [4]

f) What are the measures to control seepage in earth dams? [4]

PART–B (3x16 = 48 Marks) 2. a) Develop relation between duty and delta. [8]

b) After how many days do you supply water for irrigation, given the following data.

Soil field capacity : 24%

Plant wilting point : 13%

Density of soil : 1.7 g/cm3

Plant root zone depth : 100 cm

Daily consumptive use : 1.4 cm

[8]

3. a) What are the features of Lacey’s method of design of irrigation channels [8]

b) Design an irrigation channel based on Kennedy’s theory with the following details

Discharge : 56 cumec

Bed Slope : 1 in 7000

Critical Velocity Ratio m : 1.05

Rugosity coefficient : 0.02

[8]

4. a) Differentiate between weir and barrage. Explain with neat sketch. [8]

b) Bring out features of a river training work. [8]

5. a) What are the components of a diversion head work? Draw the layout and show the

components.

[8]

b) Explain the Bligh’s theory of design of weirs on permeable foundations. How is it

different from Khosla’s theory?

[8]

6. Write short note on the following

a) Galleries in gravity dams

b) Foundation treatment of gravity dams

c) Determination of principle shear stress in gravity dams.

[16]

7. a) How are the failures of earth dams classified? [8]

b) Explain how energy dissipation arrangements are made below a spillway. [8]


WATER RESOURCE ENGINEERING - II

(Civil Engineering)




Answer any THEE questions from Part-B

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PART–A (22 Marks)

1. a) What are methods of application of irrigation water? [3]

b) What is a contour canal? What are its benefits? [3]

c) Where is canal syphon adopted? [4]

d) What is exit gradient? [4]

e) Explain how force due to waves in a reservoir, can be found [4]

f) Discuss ogee spillway [4]


2. a) Discuss the standards of quality for irrigation water. [8]

b) Find the frequency of irrigation if the following data is given.

Field capacity : 26%

Wilting point : 14%

Density of soil : 1.7 g/cm3

Root zone depth : 1.2 m

Daily consumptive use : 15 mm

[8]

3. a) Compare the design principles of channels by Kennydy’s and Lacey’s methods. [8]

b) Design an irrigation channel for the following data

Water Discharge : 33 m3/Sec

B/D Ratio : 4

Critical Velocity Ratio : 1.02

Rugosity Coefficient : 0.022

[8]

4. a) What is a cross drainage work? List out different types and discuss them [8]

b) List different types of canal outlets and discuss them. [8]

5. The line diagram of a weir on permeable foundation has the following details

Length of floor : 40 m

Number of piles : 1 (Intermediate pile)

Distance of Intermediate pile from upstream end : 10 m

Depth of intermediate pile : 5 m

Depth of water held on the upstream side : 4 m

Draw the line diagram and find out out the uplift pressure at 20 m from the

downstream point using Bligh’s theory and Lane’s weighted theory.

[16]


WATER RESOURCE ENGINEERING - II (Civil Engineering)





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6. A concrete dam 15 m high is trapezoidal in section with a top width of 1m and

bottom width of 8.25m. The upstream face has a batter of 1:15. The water is stored

up to 15m height. There is no downstream water. Find the factor of safety against

sliding. Consider water force, self weight and full uplift pressure. Assume unit

weight of concrete and water suitably.

[16]

7. a) What are different types of spill way gates? [8]

b) What is a phreatic line? How do you draw it to estimate seepage through an earth

dam?

[8]


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PART–A (22 Marks)

1. a) Explain what you understand by wilting point. [3]

b) What do mean by economic cross section of a canal? [3]

c) Differentiate between head regulator and cross regulator [4]

d) Discuss the failure of rupture of a weir, due to uplift pressure [4]

e) What is reservoir sedimentation? [4]

f) What is a stilling basin? [4]


2. a) Discuss different methods of application of irrigation water . [8]

b) Find the delta for a crop if the following details are given

Duty at the head of water supply source : 2200 hectares per cumec

The period between first and last watering : 142 days

[8]

3. a) Discuss the Kennedy’s theory of design of irrigation channels. [8]

b) Design an irrigation channel using Lacey’s theory for the following data

Discharge : 55 m3/sec

Silt factor : 1.02

Side Slope : ½ : 1

[8]

4. a) Write about the following features of canal outlets

Sensitivity

Flexibility

Proportionality

[8]

b) Explain the features of river training work [8]

5. A weir has got a horizontal floor laid on permeable foundation. The length of the

floor is 30 m. An intermediate pile of depth 7 m is at a distance of 10 m from the

upstream end. The depth of water on the upstream side is 4m. Find the uplift

pressures at the key points of the intermediate pile using Khosla’s curves.

[16]

6. a) Explain how you will select site for a reservoir [8]

b) What is elementary profile of a gravity dam? What is the base width of the

elementary profile?

[8]

7. a) How are the earth dams classified? [8]

b) List out types of spillways and discuss them. [8]







Khosla’s curves will be supplied

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PART–A (22 Marks)

1. a) What is consumptive use of water? What are the units? [3]

b) What is a canal and what are economic benefits associated with it? [3]

c) Where do you provide drop in a canal? [4]

d) What is exit gradient? What are the units? [4]

e) What is practical profile of a gravity dam? [4]

f) What different types of spillways? [4]


2. a) Explain different types of Irrigation efficiencies. [8]

b) A crop requires a total depth of water of 130 cm. Find the duty of water if the base

period for the crop is 100 days.

[8]

3. a) What do you mean by economic cross section of a canal? [8]

b) Explain the design features of Lacey’s theory of design of irrigation channels. Design

an irrigation channel for the following data using the same theory. Discharge :

63m3/sec, Silt factor : 1.00, Side Slope : ½ : 1

[8]

4. a) Explain the design principles of Sarda type fall [8]

b) What is a regulator? Differentiate between head regulator and cross regulator [8]

5. a) Discuss the types of failure of a weir founded on a permeable foundation [8]

b) Compare Bligh’s theory and Khosla’s theory of design of weirs on permeable

foundations.

[8]

6. A gravity dam has the following details

Top width : 2m

Bottom width : 14 m

Slope of U/S face : Vertical

Depth of Water on U/S : 20 m

Depth of Water on D/S : 0 m

Height of free board : 2.5 m

Find the factors of safety against sliding of the gravity dam about base. Take unit

weight of dam material as 24 KN /m3 and consider water load, self weight and full

uplift load.

[16]

7. Write short note on the following

a) Ogee spillways b) Types of crest gates

[16]

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construction technology and management part€¦ · 5. explain about the hoisting and earthwork...

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