Paper Sem7

8/11/2019 Paper Sem7

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1

Seat No.: _____ Enrollment No.______

GUJARAT TECHNOLOGICAL UNIVERSITYB. E. VII

thSemesterExamination Nov- 2011

Subject code: 170601

Subject Name: Construction Management & EquipmentsDate:19/11/2011 Time: 10:30 am 01:00 pm

Total Marks: 70

Instructions:1. Attempt all questions.

2. Make suitable assumptions & Draw neat sketch wherever necessary.

3. Figures to the right indicate full marks.

Q.1 (a) Describe in detail various phases of Project Management. 07

(b) What is a Gantt bar chart? Explain, with the help of a suitable example, the

method of preparing a bar chart.

07

Q.2 (a) The following network shown in figure 1 has the estimated duration for eachactivity marked. Determine the critical path. also determine total float and free

float for each activity.

07

(b) Explain in detail Resources Smoothing method of Resources allocation

problems.

07

OR

(b) Illustrate the method of updating a network during its execution period. 07

Q.3 (a) The following table gives the data about durations and costs of various

activities of the network shown in fig.2

Activity Normal

Duration

(weeks)

Normal cost

(Rs.)

Crash

Duration

(weeks)

Crash cost

(Rs.)

1-2 4 4000 2 12000

2-3 5 3000 2 7500

2-4 7 3600 5 6000

3-4 4 5000 2 10000

The project overhead costs are Rs. 3000 per week. Find the optimum duration

and the cost associated with it.

07

6

2

F

G

I4

1 3

2

4

5

6

B

C D

E

3

2

4

5 2

Figure 1


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2

(b) Explain in detail various factors affecting the selection of construction

equipments.

07

OR

Q.3 (a) What do you understand by Job layout? What are the factors affected the job lay

out?

07

(b) Explain in detail various financial aspects of procuring construction

equipments.

07

Q.4 (a) Determine the probable cost/ hour for owning and operating of a power shovelfor following conditions.

Engine 180 HP

Crankcase capacity 30 Lit.

Time between oil changes 100 Hours

Operating factor 0.5

Useful life 5 Years

Hours used/ Year 1500 Hours

Total Initial cost 250000

Estimated salvage value 20000

Maintenance & Repair 75 % of annual depreciation

07

(b) What is the use of Present worth analysis in engineering economic studies? 07OR

Q.4 (a) Discuss in details various reasons for replacement of construction equipment. 07

(b) Explain in brief the following soil fundamentals.

1. Materials properties

2. Soil weight volume relationships

07

Q.5 (a) Write short notes on following.

1. Crawler tractor

2.

Wheel tractor

07

(b) What are the uses of power shovels? Describe with neat sketch basic parts andoperation of power shovel.

07

OR

Q.5 (a) Write short notes on following.

1. Conveyor belt

2. Idlers

07

(b) Write short notes on following.

1. Dumper

2. Wagons

07

*************

1 2

3

44(2) 7(5)

4(2)5(2)

Fi ure 2


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1

Seat No.: ________ Enrolment No.______________

GUJARAT TECHNOLOGICAL UNIVERSITYBE- VII

thSEMESTEREXAMINATION MAY/JUNE- 2012

Subject code: 170601 Date: 24/05/2012

Subject Name: Construction Management and Equipments

Time: 02:30 pm 05:00 pm Total Marks: 70

Instructions:1. Attempt all questions.2. Make suitable assumptions wherever necessary.


Q.1 (a) Discuss objectives of construction management and Explain Planning,

Scheduling and Controlling as a Function of Construction Management.

07

(b) Explain the importance of equipments in construction industry and Discuss

aspects of construction equipments that are required to be studied and mastered in

order to accomplish cost effective and timely completion of construction projects.

07

Q.2 (a) ( I ) State Rules for drawing network. Explain with suitable examples, errors in

AOA networks( 03 )

( II )A small project consists of twelve activities. Interrelationships amongst

various activities are as follows:

Activity A is starting activity and proceeds activities B,C and D.

Activity E depends on activities B and C

Activity F follows activities C and D.

Activities G and H can start as soon as activity D is completed.

Activity I succeeds activities G, E and F. Activities J and K can start only when activities H and I are completed.

Activity L is the last activity and it succeeds activities J and K.

Prepare dependency table and draw AOA diagram. ( 04 )

07

(b) ( I ) Briefly explain the concept of time value of money. ( 03 )

( II ) Compare two alternative available for using equipment on construction

project site for project duration of 8 (eight) years.

Alternative A : Buy new equipment at first cost of Rs. 50,00,000/-with net

annual return of Rs. 09,00,000/- and salvage value of @ 10 % of its first cost.

Alternative B : Buy second hand equipment at cost of Rs. 30,00,000/- with netannual return of Rs. 6,00,000/- and useful life of 4 (four) year with 0 (zero)

salvage value.

Additional Information: At present market value of 4 (four) year old new

equipment is @ 34,00,000/-. and M.A.R.R. = 18 % ( 04 )

07

OR

(b) ( I ) Discuss the influence of combined variation of atmospheric temperature and

pressure on the performance of I. C. engine. And Discuss Importance of rolling

resistance for hauling equipments. ( 03 )

07


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2

Q.2 (b) ( II ) For a wheel type tractor trailer combination following data is available.

HP at MSL. = 300 Hp.

Efficiency of engine = 90 %

Gross weight = 35 T.

Weight on driving wheel = 21 T.

Gross weight of trailer = 12 T. ( empty )

Gross weight of trailer = 32 T. ( Loaded )

Speed in various gears.Gear 1 2 3 4 5

Rated Speed 8.5 15.5 22.5 33.5 48.0 KMPH

Determine gradability in FIRST GEAR ONLY ( using only 80 % of

spare rimpull ) for tractor + trailer ( Empty ) , tractor + trailer ( loaded ) when

operating on road at altitude of 2000 m. having rolling resistance of 50.00 kg/ T. (

For tractor ) and 40.00 kg/ T. ( for trailer ) and Coefficient Of Traction ( COT ) =

0.33. ( 04 )

Q.3 (a) ( I ) Explain, Why time cost trade off is necessary? Discuss various ways to

reduce the activity duration. (02)

( II ) For a small project following data is available.

I node for activity 1 1 2 3 4 4 4 5 6 7

J node for activity 2 3 3 4 5 6 7 7 7 8

Normal Duration 10 13 4 6 0 5 9 7 3 3

Crash Duration 9 10 3 4 0 4 7 5 3 2

Normal cost 1000 780 400 320 0 250 720 420 30 300

Crash cost 1200 900 470 410 0 300 810 580 30 400

Take indirect cost as Rs. 50 per day.Determine

(a) Normal Project duration and corresponding project cost.

(b) Optimum Project cost and corresponding project duration.

(c) Minimum project duration and corresponding project cost. ( 05 )

07

(b) ( I ) Explain importance of soil fundamentals related to swell, shrinkage etc.

with reference to large scale earth excavation , moving and compaction projects.

( 02 )

( II ) Estimate book value of equipment at the end of each year of ownershipfrom following data:

Initial book value of equipment = Rs. 25,00,000/-

period of ownership = five years.

Salvage value = Rs. 2,00,000/-

method of depreciation = sinking fund method take i = 16% ( 05 )

07

OR

Q.3 (a) ( I ) What are the objectives of resource allocation? Explain do you mean by

resource leveling? Explain step by step process for resource leveling. ( 04 )

( II ) Describe safety requirements for demolition works, safety requirements

for scaffolding and form work. ( 03 )

07


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Q.3 (b) ( I ) Discuss various costs parameters that are considered and analyzed in order

to formulate equipment replacement policy. ( 04 )

( II ) For a civil engineering project net volume of earth fill is 2,50,000 m3

(with moisture content 0f 16 % and dry unit weight of 1980 kg / m3 ). This is to

be done by excavating stiff clay borrow pit having 18 % moisture content and unit

weight of undisturbed soil sample of 2100 kg / m3 . Estimate total volume of

borrow pit excavation and volume of water that will either required to be addedor to be expelled in order to achieve design specifications. ( 03 )

07

Q.4 (a) ( I ) Differentiate between network diagram and time grid diagram. Discuss

with suitable examples, use of time grid diagram to prepare resource schedule. (

04 )

( II ) Explain meaning of cash flow analysis. Discuss purpose of cash flow

analysis. Also differentiate between cash flow for contractor and cash flow for

owner. ( 03 )

07

(b) ( I ) Explain job layout. Enlist and discuss factors to be considered for

preparation of job layout. ( 03 )( II ) Describe safety requirements for demolition works, and safety measures to

be adopted for Excavation. ( 04 )

07

OR

Q.4 (a) ( I ) Explain the term Updating. Why updating is necessary? (02) 07

( II ) Original schedule of a small project is given below and information at the

end of tenth working day is also given. Determine change in critical path and

project duration by updating the network.

Original Schedule:

Activity A B C D E F G H I

Preceding Activity - - A A B,C B,C D,E D,E F,G

Duration 5 7 8 5 3 4 2 3 5

Information at the end of tenth working day.

Activities A and D were completed as per schedule.

Activity B is completed in 5 days instead of planned 7 days

Activity C started immediately after activity A was over. And it yet

requires 5 more days.

Considering site conditions duration of activities E and F are revised to 4

days and 5 days respectively.

Duration of activities G, H and I are unchanged. (05)

(b) Differentiate in very brief and precisely between

Building construction projects and infrastructure projects.

Heavy construction works and industrial construction works

Building construction works and Industrial construction works

bar chart and Mile stone chart

Optimistic time and pessimistic time

Total float and free float

Critical path and near critical path with reference to PERT

07


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Q.5 (a) ( I ) Discuss various types of the blade available for bulldozer along with their

specific usage and possible movement for maneuvering. ( 03 )

( II ) From following information determine the cost of production (excavation

and hauling) in terms of Rupees per Cubic meter.

Excavating equipment : Hoe with 1.33 m3 dipper ( can handle 1.51 m3)

having cycle time of 16 seconds and operating factor of 55 minute per hour .

Cost Rs. 3500 per hour ) Material : good common earth with swell of 20 % and fill factor of 0.85.

Hauling Units : Trucks 8.5 m3 (b.m.) capacity with operating factor of 50

minutes per hour and having round trip time 22 minutes. ( Cost Rs. 400 per hour.)

( 04 )

07

(b) ( I ) Briefly explain the inter relationships amongst material to be excavated,

bucket type, bucket size boom length and boom angle for safe and efficient drag

line operations. ( 03 )

( II ) For construction equipment following information is available.

Initial cost of acquisition Rs. 65,00, 000/-

Cost of tyre sets Rs. 3,50,000/- to be replaced after every 3000 hours of

operation.

Cost of major overhaul and repairs Rs. 8,00,000/- to be carried out after

every 4500 hours of operation.

Cost of fuel, lubricants and minor repairs and maintenance Rs. 1100/- per

hour

Estimated Life of machine = 13500 Hours of operation.

Estimated salvage value = 15 % of initial cost. Estimated usage of equipment = 1500 Hours per year

If MARR is 20 % per year estimate minimum hourly rental charges for

equipment. ( 04 )

07

OR

Q.5 (a) Answer the following in very brief and precise way :

1. Discuss the factors influencing the selection of suitable excavating

equipment.

2. Explain, How output of power shovel can be improved.

3. Explain the factors influencing the output of Hoe

4.

Discuss the factors influencing the selection of suitable excavating

equipment.

5. Write brief notes on Front End Loader OR Earth and rock saws.

10

(b) Explain the functions of following components with reference to Belt conveyer

System : belt, Feeders, Hold backs, Take ups

04

*************


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Seat No.: _____ Enrolment No.______



2. Make suitable assumptions wherever necessary.

3. Figures to the right indicate full marks

Q-1 (a)

07

7

5 8

6

8 5 10

8

6 9

6 7

Activity

Normal

Duration

Crash

Duration

Normal

cost

Crash

cost

1-2 5 4 4000 10000

1-3 8 5 5000 8000

1-4 6 4 4000 7000

2-5 7 5 5000 6000

2-6 6 4 4000 8000

3-6 5 3 3000 7000

4-6 9 6 6000 9000

4-7 6 4 4000 7000

5-8 8 6 6000 8000

6-8 10 7 7000 10000

6-7 8 5 5000 8000

7-8 7 5 5000 10000

Indirect cost is Rs. 3000/week

Q-1 (b) i Draw a neat sketch of a crawler mounted bulldozer and show various parts 07

ii What is a good efficiency factor for a front shovel working on highway construction projects?

For the network shown below find out the project completion time. Draw the time scale

diagram and crash suitable activities and find out the total cost of project for completing it in

(i) 27 weeks (ii) 25 weeks

GUJARAT TECHNOLOGICAL UNIVERSITY

Subject Name: Construction Managementand Equipments

Total Marks: 70

1

2

4

3

5

6 8

7


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Q-2( a )

07

3-5-7

3-6-8

0-0-0

1-2-3 2-4-6

3-6-8 8-15-20

0.00 0.40 0.50 0.60

0.50 0.69 0.72 0.75

Q-2( b ) Describe the belt conveyors 07

Q-2( b ) Discuss equipment replacement policy 07

Q-3 (a)

10

C ( 3 )

10

E ( 2 )8 0 8

Q-3 (b) Discuss factors affecting output of a drag line 04

For the network shown below, determine the critical path and probalility of finishing the

project within scheduled time of (i) Ts = 34.67 days (ii) Ts = 36days. Also calculate earliest

and latest event occurrence times.

6-8-12

8-12-17 6-9-12

1-2-3

5-7-9

The three time estimates for each activity are written on the arrow showing the respective

activity. Probability corrosponding to Z value may be interpolated form following table

Value of Z

Probability

OR

eterm ne t e aggregate resources requ rements per o y per or t e networ g ven

below. The figure over the arrows indicate the requirement of masons and figures below the

arrows are the durations of the activities for the project. Smooth out the requirement of

resources and indicate resulting revised schedule

5

B ( 3 )

H ( 2 )

D ( 3)

9

G ( 4 )

6

A ( 2 )

8

F ( 4 )

9

1

2

3

5

8

9

10

4 6

7

1 2 4

3

5

6


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Q-3 (a)10

Activity Duration

1-2 8

1-3 6

1-4 8

2-4 12

2-5 4

3-5 4

4-6 10

5-6 10

Q-3 (b) Write short note on " Network Updating " 04

Q-4 (a) i Explain cash flow diagram with simple example 04

ii Enlist various safety codes to be used to reduce accidents at various construction sites 03

Q-4 (b) i Discuss importance of safety in construction sites 04

ii State and describe various causes of accidents at the construction site. 03

Q-4 (a)07

Q-4 (b) Define and explain 07

(1) Depreciation (2) Obsolescence cost (3) Down time (4) Investment cost

Q-5 (a) Determine the following costs of a powershovel 10

( I ) Annual investment cost( II ) Depreciation cost per year

( III ) Maintenance and repair cost per yea

( VI ) Lubrication oil cost / hour

( V ) Diesel cost / hour

The following data about power shovel are available

Engine : 160 HP

Crank Case capacit =30 Litre

Useful life 5 years

Time between oil changes = 100 hours

an power

requirement

7

OR

Explain the term " Job layout" and draw a job layout for a construction site of a large

multistoreyed building

3

15

5

13

9

11

OR

6

Considere the problem of project scheduling as shown in the follwing table. Obtain a

schedule which will minimize the peak man power requirement and also smooth out period

to period variation of man power requirement


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Shipping weight - 104 tonnes

Factory price - Rs26 Lakh

Operating factor - 0.6

Fright charges = Rs. 300 / tonne

Hours used per year = 5000Oil cost = Rs 150 / litre

Diesel cost = Rs 40 / litre

Q-5 (b) The weight of a tractor is 15 tonnes 04

Q-5 (a) Define and explain the following 07

( a) Drawbar pull ( b) Rimpull ( c ) Coefficeint of traction (d) Rolling Resistance

Q-5 (b) A Builder is considering three methods for acquiring pick up trucks, the alrernatives are 07

If the builder's minimum attractive rate of return is 8 %. Which alternative should be used ?

(x) Purchase the trucks for Rs.16.8 Lakhs each and sell after four years for an estimated

amount of Rs. 5.0 Lakhs

(y) Lease the trucks for four year for Rs. 4.1Lakhs per year paid in advance at the beginning

of each year.The contractor pays all operating and maintenance cost for the trucks and the

leasing company retains ownership.

(z) Purchase the truck on special time payment with Rs.4.0 Lakh down payment now and

Rs.4.5 Lakhs per year at the end of each year for three year. Assume the truck will be sold

after four years for Rs. 5.0 Lakh each

as a raw ar pu o g w e opera ng on a eve sur ace n e gear. e

rolling resistance of surface is 49.5 N / KN. Determine the drawbar pull of tractor when it is

operating on a level surface having rolling resistance of 90 N / KN

OR


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Seat No.: _________ Enrolment No._______________

GUJARAT TECHNOLOGICAL UNIVERSITYBE SEM-VII Examination-Nov/Dec.-2011


Subject Name: Irrigation Engineering

Time: 10.30 am-01.00 pm Total marks: 70

Instructions:

1. Attempt all questions.

2.

Make suitable assumptions wherever necessary.


Q.1 (a) Explain the procedure of designing an irrigation channel

with Kennedys theory, when Q, N, m and S are given.

07

(b) Explain the terms (i) Duty (ii) Delta and (iii) Base period.

Derive the relation between Duty, Delta and Base period.

07

Q.2 (a) Describe the method of design of a lined canal. 07

(b) Explain Khosla;s method of independent variables. 07

OR

(b) Write the design features for Boarder Strip Flooding

irrigation method.

07

Q.3 (a) Describe the following irrigation methods with sketches

(i)

Check basin flooding method.

(ii)Drip irrigation method

03

04

(b) (i)Find the time required to cover an area of 0.1 hectareswhen a tube well is discharging at the rate of 0.03 cumec

for irrigating rabi crop. Average depth of flow is expected

to be 7.5 cm. Average infiltration rate for the soil may be

taken as 5 cm/hour.

(ii) Furrow 100m long and 1m apart having longitudinal

slope of 0.3 percent are initially irrigated by a non-erosive

stream for 80 minutes. The stream size is then reduced to

40% and continued for another 35 minutes. Determine the

average depth of irrigation.

04

03

OR

Q.3 (a) Describe the method of designing an irrigation canal basedon Laceys theory.

07

(b) Using Kennedys theory, design a channel section for the

following data:

Discharge, Q=25 cumec, Kutters N=0.0225,

Critical velocity ratio, m=1, Side slope =1/2:1 and

Bed slope, S=1/5000

07

Q.4 (a) (i) Explain the term Diversion Head Work and clearly

mention its different functions.

(ii) Explain Blighs Creep Theory in details.

04

03


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2

(b) A canal takes off from a reservoir to irrigate the areas as

shown in the Table below. 40% of the water required for

irrigation is assumed to be available directly from

precipitation. Channel conveyance losses are 15%.

Reservoir losses are 10%. What would be the capacity of

the reservoir needed? (The reservoir to be filled only once a

year.)

Crop Base period

(days)

Duty at field

(ha/cumec)

Area under

Crop (ha)Wheat 120 1800 500

Sugarcane 320 800 600

Rice 120 900 300

Cotton 200 1400 1200

Bajra 100 1200 500

07

OR

Q.4 (a) State and explain the cause of failure of Structure founded

on permeable soil.

07

(b) A weir has a solid horizontal floor length of 50 m with two

lines of cutoff 8 m depth, below the riverbed at its twoends. The floor thickness is 1 m at the upstream end and 2

m at the downstream end, with its upper level being in

flush with the river bed. For an effective head of 5 m over

the weir, calculate the uplift pressure at the two inside

corner points (junction of bottom of floor with the cutoff)

and also exit gradient.

07

Q.5 (a) Describe with the help of sketches various types of Cross-

drainage works.

07

(b) (i) What do you understand by a fall in canal? Why it is

necessary?

(ii) What are the causes of water logging?

04

03

OR

Q.5 (a) What is weir? How does it differ from a barrage structure?

Give relative advantages and disadvantages with their

salient features.

07

(b) (i) What are the functions of a canal head regulator?

(ii) Explain the terms with a sketches wherever applicable

(1)Sheet piles (2) D/S protection (3) U/S protection.

04

03

*************


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1







Instructions:1.

Attempt all questions.2. Make suitable assumptions wherever necessary.


Q.1 (a) Differentiate between the following:

(i) Sprinkler Irrigation and Drip Irrigation

(ii)Weir and Barrage

07

(b) Write brief notes on the following:

(i) Benefits and Ill-effects of Irrigation

(ii)Types of Canal Falls

07

Q.2 (a) Explain various irrigation efficiencies. 07

(b) Discuss classification of soil moisture. Also explain significance of field

capacity and permanent wilting point in deciding frequency of irrigation.

07

OR

(b) The following table provides the base period, duty and cultivated area for

various crops, which are commanded by a canal off-taking from a reservoir.

Determine the reservoir capacity, if losses in the canal and reservoir are

25% and 10% respectively.

CropBase Period

(day)

Duty at the

field(hectare/cumec)

Area under

cultivation(hectare)

Sugarcane 330 1500 2500

Cotton 200 1400 3500

Wheat 120 1800 5000

Rice 120 900 2000

Vegetables 120 1000 1500

07

Q.3 (a) What are limitations of Kennedys silt theory? Describe Laceys regime

theory in brief.

07

(b) Write short note on water logging and remedial measures to prevent it. 07

OR

Q.3 (a) Sketch a typical cross-section of a canal which is partly in cutting and partly

in filling. Also, explain balancing depth in canal.

07

(b) Design an irrigation channel in alluvial soil using Laceys theory, for the

following data:

(i) Full supply discharge = 10 cumec

(ii) Laceys silt factor = 0.9

(iii) Side slopes of channel = 0.5 (H) : 1 (V)

07

Q.4 (a) Discuss causes of failure of weirs and briefly explain measures to preventsuch failures.

07

(b) Explain Khoslas method of independent variables for design of a weir. 07


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1


GUJARAT TECHNOLOGICAL UNIVERSITYB. E. - SEMESTER VII EXAMINATION WINTER 2012



Time: 10.30 am - 01.00 pm Total Marks: 70Instructions:

1. Attempt any five questions.

2.


3.

Figures to the right indicate full marks.

Q.1 (a) Define Irrigation. State the advantages and ill-effects of irrigation. 04

(b) Explain Duty and Delta. Obtain the relationship between them. 05

(c) Explain: Frequency of irrigation.

Calculate the frequency of irrigation for a crop, to ensure the optimum

growth, for the following data:

Field Capacity = 33% , Permanent wilting point = 13%Relative density of soil = 1.2, Root zone depth of crop = 95 cm

Daily consumptive use of water = 10 mm

Assume the optimum soil moisture as 80% of the available moisture.

05

Q.2 (a) Enlist different methods of irrigation. Explain, with neat sketch, Furrow

method. What are the factors which decide the spacing between the furrows?

07

(b) Distinguish, clearly, between Application efficiency and Storage efficiency.

State the measures to improve the water application efficiency.

Determine the water distribution efficiency in a 180m long border strip

when the soil sampling after irrigation at 30m interval along the water run

showed the effective depths of water penetration (in cm) as 120, 120, 112, 108,

107 and 105.

07

OR

(b) Explain: Kor watering, Time factor.

An irrigation canal has a gross command area of 50000 ha, 10% of it being

unculturable. Calculate the design discharge of the canal for the following data:

Sr.

No.

Crop Intensity of

irrigation

Duty at outlet

(ha/cumec)

Crop

season

1 Paddy 40% 850 Kharif

2 Bajra 20% 1800 Kharif

3 Wheat 50% 1200 Rabi4 Vegetable

s

40% 750 HW

5 Sugarcane 20% 700 Perennial

Take time factor = 0.8, capacity factor = 0.75 and canal losses = 20%.

07

Q.3 (a) Discuss, in brief, Kennedys silt theory for the design of unlined channel.

Explain regime channel and state different regime conditions. Given the

Laceys regime equations, obtain the relation between wetted perimeter (P) and

discharge (Q).

07

(b) What are the advantages and disadvantages of canal lining?Design a trapezoidal concrete lined channel to carry a discharge of 200 cumecs

for the longitudinal slope 1/5000 and side slopes 1.25:1. Assume the limiting

velocity of flow = 2 m/s and Mannings coefficient N = 0.014.

07


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OR

Q.3 (a) Explain water-logging. What are the causes of water-logging? Discuss, in

detail, the precautionary measures for water-logging.

07

(b) Sketch the typical cross section of an irrigation channel flowing fully in filling

and show on it different component parts of the channel.

Design a regime channel to carry a discharge of 40 cumecs, if side slopes are at

0.5:1 and Laceys silt factor f = 0.95.

07

Q.4 (a) What is Diversion headwork? Sketch typical layout of a diversion headworkscheme and explain the importance of the scouring sluices.

05

(b) The profile of a concrete slope weir is as shown in Fig.(1). Using Khoslas

theory, check the safety of the weir against piping. Also, calculate the uplift

pressure heads at the key points and check the safety of the weir against uplift

at the toe of the downstream glacis. The thickness of the concrete floor at

upstream sheet pile is 1m, at the intermediate sheet pile is 2m and at the

downstream sheet pile is 1m. Consider the case of no flow at pond level, safe

exit gradient GE= 1/7, relative density of concrete S = 2.4 and slope correction

factor for 3:1 slope = 4.5.

09

OR

Q.4 (a) Explain, clearly, the following terms in context of diversion headwork:

Creep length, Barrage, Percolation coefficient, Bed retrogession.

08

Q.4 (b) Distinguish between exit gradient and safe exit gradient.

The depth of the downstream sheet pile of a concrete slope weir is 8 m. If

the safe exit gradient is 1/6, what should be the minimum length (b) of the

impervious concrete floor required for the seepage head of 6 m?

06

Q.5 (a) Explain different types of Aqueduct and discuss the factors affecting theselection of a suitable type of aqueduct. 05

(b) Sketch the section (along the drain) of a siphon aqueduct. What are the

different forces likely to act on the bottom of the canal trough?

05

(c) Discuss: Surplus water escape is the safety valve in a canal system. 04

OR

Q.5 (a) Explain the importance of channel transition in a Cross drainage work. Also,

design a contraction transition for a 24m wide canal with 50% fluming. Use

Mitras method for the design of the transition.

04

(b) Explain the necessity of canal fall in a canal system. Why is the Cistern

provided below the canal fall?

04

(c) Explain the importance of the following in the canal regulation works:Cross regulator, Kings vanes, Bed bars

06

*************

2


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Seat No.: ________ Enrolment No.___________

GUJARAT TECHNOLOGICAL UNIVERSITYBE - SEMESTERVII EXAMINATION SUMMER 2013

Subject Code: 170602 Date: 24-05-2013


Time: 02.30 pm - 05.00 pm Total Marks: 70




Q.1 (a) (i) Explain irrigation efficiency.

(ii) Define: water application efficiency; water storage efficiency and

water use efficiency.

07

(b) 5 cumec of water is supplied to a field having an area of 21 hectares. It

is found that 30 cm of water depth has been stored in the root zone of

the crop. Determine the water application efficiency.

07

Q.2 (a) Explain the terms: (i) Crop period and Base period

(ii) Duty of water.

07

(b) What is the consumptive Irrigation Requirement (CIR)? State the

different factors affecting it.

Determine the Consumptive use and Field Irrigation requirement (FIR)

for a rabi crop from the following data:

(i) Consumptive Use Coefficient (K) = 0.74

(ii) Total Pan Evaporation during the season (Ep) = 53.38 cm

(iii) Total Effective Rainfall (Re) = 5.3 cm

Take water application efficiency a= 80 %. Assume other

losses like leaching etc. are absent.

07

OR

(b) The GCA of an irrigation project is 1 lac hectares. The CCA is 75 % of

GCA. The intensities of irrigation for Kharif & Rabi crops are 50 % ad

55 % respectively. If the duties for Kharif & Rabi crops are 1200

hact/cumec and 1400 hact/cumec respectively, determine the discharge

at the head of canal considering 25 % provision for transmission loss,

overlapping allowances, evaporation etc.

07

Q.3 (a) Explain Laceys silt theory. Using Laceys basic regime equations

derive an expression for scour depth.

07

(b) Design an alluvial canal by using Laceys theory from the following

data:

(i) Full supply discharge = 35 cumec.

(ii) Rougocity coefficient = 0.025

(iii) Side slope = 1:1.25 and bed slope = 1/5000

(iv) Available CVR (m) = 0.9 to 1.1

(v) Standard rougocity coefficient of soil (Na) = 0.0225

07

OR

Q.3 (a) What do you mean by lining a canal? What are the advantages of it? 07

(b) State the stepwise procedure for designing a lined canal with triangular

section when given quantities are discharge, rougocity coefficient , bed

slope and either side slope or .

Design a triangular shaped lined canal from the following data:

(i) Discharge = 50 cumec

07


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(ii) Rougocity coefficient = 0.022

(iii) Side slope = 1: 1.25

(iv) Bed slope = 1/3000.

Q.4 (a) Explain the term Diversion Head Works. State the different points

favorable for its location.

07

(b) State the causes of failure of weirs founded on permeable soils and

their remedies.

A weir founded on the permeable soil having Blighs coefficient (C) =6. Find the exit gradient for this structure and state whether it is safe

against the piping or not. Consider the following data:

(i) Head of water up to the crest of gate on u/s = 2.6 m

(ii) Depth of d/s cutoff = 3.6 m

(iii) length of floor = 20 m.

07

OR

Q.4 (a) What do you mean by water logging of soil? How would you prevent

it?

07

(b) State the following criteria for the open drain design: (i) Depth; (ii)

Side slope; (iii) Bed slope and Velocity of flow in the drain.Design a drainage channel for a catchment area of 100 hect. Coefficient

of runoff = 0.6 and intensity of rain fall = 35 mm/hr. Take N = 0.025.

Assume side slope = 1:0.5. Use Laceys theory for the design of above

drainage channel.

07

Q.5 (a) Differentiate between the Aqueduct and siphon Aqueduct and mention

the functions of cross regulator.

07

(b) Explain the transition of a canal. Design a canal transition from the

following data using Mitras method:

(i) Canal bed width = 20 m

(ii)

Length of contraction transition = 10 m and that of theexpansion transition = 15 m

(iii) Splay of contraction transition = 2:1 and that of for

expansion transition = 2:1.5.

07

OR

Q.5 Write short Notes ( Any Four):

(i) Blighs Creep theory and its limitations.

(ii) Land reclamation.

(iii) Sloping glacis weir.

(iv)

Canal falls.(v) Benefits and ill effects of irrigation.

(vi) Drip irrigation.

14

************


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1




Subject Name: Structural Design I

Time: 10.30 am-01.00 pm Total marks: 70




4. Draw neat and clean sketches with pencil only.

5. IS 456-2000, IS 800-2007, SP-16, IS 875 Part I, II and III and steel table are

permitted.

6. Adopt M20 grade of concrete & Fe 415 grade of reinforcement for RC design

and fy= 250 grade for steel design unless otherwise stated.

Q.1 Write answer in short (Two marks for each).

(1)

Why the minimum reinforcement less than 0.85/fyis permitted in RC slabs as compared to the RC

beams?

(2)

What are IS 456 guidelines to satisfy limit state of

cracking in slabs?

(3)Why is the larger concrete cover required for

footing reinforcement?

(4)What are the criteria for minimum eccentricity in

column design as per IS 456?

(5)Write the design bending strength of a laterally

unsupported beam as governed by lateral torsionbucking as per IS 800?

(6)What are IS 800 recommendations for compression

member in trusses?

(7)Write the expression given in IS 800 to calculate

design strength of a groove weld in tension & a

groove weld in shear?

14

Q.2 (a) Elaborate with reasons for Limit state method is more

desirable than working stress method.

07

(b) Determine the plan dimensions of a combined footing for

two axially loaded columns with following data if (1) widthis not restricted, considering 1 m projection from C1 (2)

width is restricted to 2.3 m. Assume self weight of footing

is 15% of axial loads.

Columns C1 C2

Type Interior Interior

Size 400 mm x 400 mm 400 mm x 400 mm

P 1000 kN 1200 kN

Spacing 3 m c/c from C1to C2

ABP 150 kN/m2at 1.6 m depth

07

OR(b) Write the steps for design of base plate. 07


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2

Q.3 (a) A short column of 300 mm x 500 mm size is subjected to

an axial factored load of 2000 kN and factored moments

Mux = 80 kNm and Muy = 60 kNm. Determine the main

reinforcement only in the column if the moment due to

minimum eccentricity is less than the applied loads. Use

M20 Fe 415 and 28 mm diameter bar.

07

(b) A rectangular beam section of size 230 mm x 600 mm

overall depth is subjected to a factored sagging BM = 48

kN.m; factored SF = 48 kN and factored TM = 18 kN.m.

Design the main reinforcement only at the section. UseM20 Fe 415.

07

OR

Q.3 An RCC column of size 350 mm x 350 mm reinforced with

8 mm 16 mm diameter bars carries characteristic load of

800 kN. The allowable bearing pressure on soil is 200

kN/m2. Design isolated pad footing. Use M20 and Fe 415

for both column and footing. Carry out all checks. Draw

detail reinforcement layout also. Assume 10% dead load of

footing.

14

Q.4 Design a simply supported steel beam of 7 m spam carrying

a RC floor capable of providing lateral restraint to the top

compression flange. The total factored udl subjected was

53.6 kN/m thr out and factored point load act at center as

150 kN. Use ISMB section. Perform the check for web

buckling only.

14

OR

Q.4 (a) Determine the tensile strength of a roof truss diagonal 100

x 75 x 6 mm having fy= 250 MPa connected to gusset plate

by 4 mm welds of 140 mm long at top and 310 mm long at

bottom. The longer edge of 100 mm was connected to plateof 8mm thickness.

10

(b) Why are the connections using HSFG bolts called slip

critical connection? What is a main purpose of a washer in

HSFG bolts?

04

Q.5 (a) A cantilever RC beam requires 910 mm2 area of

reinforcement for flexure. 2 no. 25 mm diameter bars are

provided and anchored as shown in fig. 1. Check whether

sufficient anchorage is provided. If not, calculate the

maximum size of bar that can be used as reinforcement.

Use M20 and Fe 415.

07

(b) Calculate the compressive resistance of a compound

column consisting of ISHB 300 with one cover plate 350 x

20 mm on each flange and having a length of 5 m. assume

that bottom of the column is fixed and top is pinned, fy=

250 MPa

07

OR

Q.5 (a) Explain the situations under which flat slab has to be

provided. Write the limitation of direct design method used

for the design of flat slab.

07

(b) Elaborate the effect of shear leg in tension member with

necessary sketch.

07


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3

*************

Figure 1(Q. 5 (a))

2 25 mm dia.

1500 mm 1000 mm

30 mm cover 30 mm

50 mm

cover


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1





Subject Name: Structural Design-I


Instructions:

1.


3.


4. Use of IS: 800 (2007), IS: 456 (2000) and Steel Table (IS Hand book-No:1) is

permitted.

5. Assume the Ultimate and Yield stress of steel as 410N/mm2and 250N/mm

2

respectively unless it is mentioned.

Q.1 (a) Explain Working stress method and Limit state method of structural

Design Philosophy.

06

(b) A single equal-leg angle 100x100x10mm is connected to a gusset plateof 10mm thick at the ends with 6 bolts of 20mm diameter in a single

line at a gauge distance of 60mm to transfer tensile force. Determine

the design tensile strength of the angle. Assume edge distance as

40mm & pitch for the bolts as 50mm.

08

Q.2 (a) Distinguish clearly between

1. One way and Two way slab

2. Lacing and Battening.

06

(b) Design and detail a slab base plate for a column ISHB450 @

87.24kg/m of 4m length. The factored load on column is 1250kN. The

grade of concrete used for pedestal is M20.

08

OR

(b) Design an isolated sloped footing for the column of size

300mmx500mm reinforced with 6 bars of 20mm diameter carrying an

ultimate load of 900kN. The bearing capacity of soil is 260kN/m2. Use

M20 and Fe415. Effective cover for bottom steel is 60mm.

07

Q.3 (a) Design a Reinforced Concrete slab for a room 6mx5m. The slab is to

be cast monolithically over beams with corners held down. The width

of supporting beams 230mm. Slab carries superimposed load of

3kN/m

2

. Use M20 and Fe415.

07

(b) Design a column of I- section in a building subjected to axial factored

compressive load of 900kN. The height of column is 4.5m with both

ends fixed. It is braced in order to prevent buckling about the weaker

axis at a half the length of the column.

07

OR

Q.3 (a) Determine axial compressive load carrying capacity of a 2.3m long

single angle strut ISA75x50x8mm. The longer leg is connected to the

gusset plate with two bolts at each end. Assume hinged condition.

07

(b) A reinforced concrete rectangular beam 300mmx600mm deep is

subjected to a uniformly distributed load 40kN/m over a simply

supported span of 6m. Design the beam for flexure using M20 andFe415.

07


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2

Q.4 (a) Design a uniform section for Moment and shear capacity of two spans

simply supported continuous beam ABC. Span AB is of 4m length and

carries a central concentrated load of 150kN and span BC is of 6m

length and carries a central concentrated load of 200kN. Assume the

beam is to be laterally supported. Adopt plastic design procedure.

07

(b) A doubly reinforced beam of size 250mmx600mm is required to resist

a moment of 300kN.m. Using concrete of grade M20 and Fe415,

calculate the amount of steel required. Assume effective cover as

50mm.

07

OR

Q.4 (a) Explain various structural members with neat sketches, which will be

designed as a beam-column (Combination of Bending with axial

compression). Mention the design steps involved for beam-column as

per IS: 800, 2007.

07

(b) A Reinforced Concrete beam of rectangular cross section

350mmx450mm effective depth is subjected to bending moment of

40kN.m, shear force of 25kN and torsion 15kN.m at the section.

Design the beam assuming effective cover as 50mm.

07

Q.5 (a) Design and detail a connection for a truss member 2-ISA60x60x8mm

connected back-to-back on both the sides of a 10mm thick gusset plate

using M20 bolts of property class 4.6 grade. The axial factored load in

the member is 150kN.

07

(b) Calculate the area of steel required for a short RCC column

400mmx450mm to carry an axial load of 1100kN. Use fck=20MPa

and Fe415 grade of steel.

07

OR

Q.5 (a) Explain various elements of FLAT SLAB. 07

(b) Determine the maximum uniformly distributed load that can be carried

by a laterally unrestrained ISMB300 simply supported beam of 2.5meffective length.

07

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1




Subject Name: Structural Design - I

Time: 10.30 am - 01.00 pm Total Marks: 70Instructions:1. Attempt any five questions.


3.


4.

Use of IS:456, IS:800 and Steel Tables is permitted.

5.

Assume yield stress of steel as 250 MPa and ultimate stress as 410 MPa unless

mentioned other wise for Steel Design.

6.

Use concrete of grade M20 and steel of grade fe415 unless mentioned other

wise for R. C. C. Design.

Q.1 (a) Discuss the various philosophies of the design in R. C. C. and steelstructures. Also discuss the merits and demerits of each.

07

(b) A square R. C. C. column of size 450 x 450mm has concrete grade of M25

and main steel of 12 nos. of 20mm dia. bars (Fe 500). It carries a factored

axial load of 1600kN and factored bending moments of 120kN-m and

60kN-m about two axes. Check the safety of the column if Uniaxial

Bending Moment capacity about each axis is 180kN-m.

07

Q.2 (a) An ISMB500 is loaded by a factored compressive load of 500kN at the

midpoint of the flange. Check the safety of the column if the effective

length for both axial and bending is 2.8.m

07

(b) A steel column ISMB600 is loaded by the factored axial compressive load600kN. Design the suitable slab base for the column if it is resting on the

concrete of the grade M25.

07

OR

(b) An R. C. C. column of the size 300x300 mm is loaded by a working axial

compressive load of 700kN. If the Safe Bearing capacity of the soil is

150kN/m2, design the suitable square slopped individual footing for the

same giving check for the shear.

07

Q.3 (a) A truss member is analyzed and found that following loads are acting on it.

1) Dead Load = 100kN (compression) and 2) Live Load = 75kN

(compression). If the length of the member is 2.25m between theconnections and is connected to the 10mm thick gusset plate, design the

member comprising of 2 equal angle sections. Assume that the member is

connected to gusset plate by more than 2 nos. of bolts.

07

Q.3 (b) A steel column is loaded by a working load of 600kN. The length of the

column is 3.4m and is restrained against both at the one end and is

restrained against translation only at the other end. Design suitable I section

for the same.

07

OR

Q.3 (a) A tension member comprises of the single angle ISA9060 x 6mm is

connected by 7 nos. of 16mm dia. Bolt to the 10mm thick gusset plate.

Calculate the capacity of the member if shorter leg is connected. Take edge

distance as 40mm and pitch as 50mm.

07

Q.3 (b) A column restrained against rotation and translation both at both the ends 07


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2

has length of 6.0m. It is fabricated form 2ISMC350 face to face forming a

rectangle of 500x350. It is loaded by an axial compressive factored load of

1600kN. Design the suitable Lacing ORBattening system for the same.

Q.4 (a) A simply supported R. C. C. beam of span 6m carries working udl of

30kN/m throughout the span. Design the beam assuming the width of the

beam as 300m, effective cover as 45mm and main steel bars of dia. 20mm.

07

(b) A simply supported R. C. C. beam with clear span of 5m, support width

230mm, size of 230 wide and 420mm deep, tension bars as 4nos. of 16mmdia. bars and clear cover of 25mm. If it is loaded by an all inclusive factored

udl of 60kN/m, design the shear reinforcement near support only using 2

legged 6mm. mild steel stirrups.

07

OR

Q.4 (a) An R. C. C. beam of size 300 wide and 500mm deep is reinforced by

tension bars as 4nos. of 25mm dia. and compression bars as 2nos. of 16mm

dia. Calculate the moment of resistance of beam if the clear cover is 30mm

on both the sides.

07

Q.4 (b) A short R. C. C. column of size 300 wide and 600mm deep carries working

axial compressive load of 800kN. Design the column using 20mm main

steel bars and 8mm tie bars. Assume the grade of the concrete as M25.

07

Q.5 (a) A simple support beam is laterally supported over the span of 8m and

loaded by a super imposed load of 30kN/m over the entire span and 100kN

and centre. Design the beam using ISMB section and check for all the

safety.

07

(b) An R. C. C. slab of spans 4mx6m has only one long edge continuous and all

other edges discontinuous. The slab is 130mm thick. It is loaded by live

load of 4kN/m2 and floor finish load of 1kN/m2. Design main steel at

bottom of 4m span and check for deflection assuming support width of

230mm.

07

ORQ.5 (a) A beam of ISMB550 has simple support span of 9m and is laterally

supported at centre only. Calculate the maximum all inclusive factored udl it

can support.

07

(b) A 150mm thick R. C. C. flat slab is loaded by live load of 4kN/m2 and floor

finish load of 1kN/m2. It is supported by 4 columns of size 450x450 mm.

The column head is changing the size of 600x600 mm bottom to

1500x1500mm at top over the depth 500mm. The columns are placed at

4.5mx6m centre to centre. Check the slab for shear only.

07

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1/2

Seat No.: ________ Enrolment No.___________

GUJARAT TECHNOLOGICAL UNIVERSITYBE - SEMESTERVII EXAMINATION SUMMER 2013

Subject Code: 170603 Date: 28-05-2013

Subject Name: Structural Design I

Time: 02.30 pm - 05.30 pm Total Marks: 70

Instructions:1. Make suitable assumptions wherever necessary.


3. Draw neat and clean sketches with pencil only.

4. Use of IS 456-2000, IS 800-2007, IS 875 Part I, II and III and steel table is

permitted.

5. Adopt M20 grade of concrete & Fe 415 grade of reinforcement for RC design

and fy = 250 grade for steel design unless otherwise stated.

Q.1 (a) (i) What is the difference between Mild steel and HYSD steel. Also state the fewcharacteristics of both types of steel.

(ii) Explain the purpose of Binding wires, Spacers, Chairs and Dowels fromdetailing point of view.

07

(b) (i)State the types of Limit State(ii) Give the full forms of the following acronyms: RCC, HYSD, TMT

07

Q.2 (a) (i)List a few Indian standard codes that are followed while designing structuresmade of steel.

(ii) What are the advantages of bolted connections over riveted or welded

connections?

07

(b) Design a rectangular beam having 3.5 m simply supported clear span. Assumesupport width to be 230 mm. Beam is subjected to a dead load of 25 kN/m and live

load of 20.0 kN/m. Design the beam for M20 and fe 415 grade of materials.

07

OR(b) Design a lap joint and butt joint between two plates having thickness 12 mm and 16mm are connected by a single bolted joint with 20 mm diameter bolts at 75mm

pitch. Calculate the efficiency of the joint. Take fu of plate as 410 MPa and assume

4.6 grade bolts.

07

Q.3 (a) A singly reinforced slab 120 mm thick is supported by T-beam spaced 3.2 m centreto centre. The effective depth and width of web are 560 mm and 450 mm

respectively. 8 nos. of Tor steel of 20 mm dia are provided in 2 layers. The effective

cover to the bars in lower layer is 50 mm. The effective span of simply supported

beam is 3.60 m. Determine the depth of Neutral Axis and the Moment of resistance

of T-beam section.

07

(b) Design a doubly reinforced section for a rectangular beam having an effective span

of 4.0 m. The superimposed load is 40 kN/m and size of beam is 230 mm x 450 mm.Assume the suitable data. Design for the M25 and fe415 grades of materials.

07

OR

Q.3 (a) (i) What is meant by Aspect Ratio. State the limits of the same for One way and twoway slabs. Also show the sharing of the loads on the adjacent beams of both the

slabs by sketch.

(ii) List down the criterion for the following along with the relevant Clause numbers

in IS 456:2000 : Maximum diameter of reinforcement bars, Maximum spacing of

the bars and Minimum reinforcement.

07

(b) A simply supported reinforced concrete beam of size 300 x 500 mm effective isreinforced with 4 bars of 16 mm dia HYSD steel of grade Fe-415. Determine the

anchorage length of the bars at the simply supported end if it is subjected to afactored shear force of 350 kN at the centre of 300 mm wide masonry support.

Concrete mix M20 is used.

07

Q.4 (a) Design a tie member of roof truss subjected to working loads of 80 kN(DL) and 120 07


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2/2

kN(LL). Use double angle section connected back o back on either side of gusset 8

mm thick. Use bolted connection. Fy=250MPa and fu = 410 MPa for both member

and bolt material. What will be the capacity if the angles are connected on the same

side of the gusset plate.

(b) Calculate compressive strength of 2 ISA 80 x 80 x 8 mm placed on either side ofgusset plate 8 mm thick with effective held in position at both ends but restrained

against rotation at one end. The length of member is 3 m and fy is 250 MPa.

07

OR

Q.4 (a) Design a simply supported beam of span 5m carrying a reinforced concrete floorCapable of providing lateral restraint to the top compression flange. The UDL is

made up of 25 kN/m including dead load. Assume Fe 410 grade steel.

07

(b) A two span continuous beam is fixed at A and simply supported at B and C.AB=6m and BC=4m. It carries factored UDL of 10kN/m over entire length. Design

uniform section. Compare the design if the section for span AB and BC have their

plastic moment of resistance in the ratio of their plastic moments Mp developed due

to their individual mechanisms.

07

Q.5 (a) (i)List down the assumptions made in the Limit state of collapse in Flexure.(ii)Explain the modes of failure for Under- reinforced and Over- reinforced beam.

07

(b) Design a short rectangular column to carry an axial load of 455KN. Take M20grade of concrete and Fe415 grade of steel. Apply the check for the eccentricity.

Unsupported length of column is 3m.

07

OR

Q.5 (a) Design a built up column with two channels toe-to-toe to carry a factored load of1700 kN. Take the effective length as 5.2 m. Design it as a laced column and also

design the lacing.

07

(b) (i) Explain different end conditions of columns with their effective length.(ii) What is difference in behavior of short and long compression members ?.

07

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1




Subject Name: Urban Transportation SystemTime: 10.30 am-01.00 pm Total marks: 70

Instructions:




Q.1(a) What is Transportation Planning? Which are the objectives and goals of the

transportation planning?

7

(b) Explain the problems in the urban transportation in the present scenario of

high vehicle ownership.

7

Q.2(a) What is Zoning? Discuss the points to be kept in mind while doing zoning. 7

(b) Explain the following terms with the help of sketches.

1. Study Area

2. Cordon Line

3. Centroid of Zone

4. Trip

5. Intrazonal, Interzonal and through trips

6. Screen line

7. CBD

7

OR

(b) Which are the methods of O-D Survey? Describe in detail any one method

which provides detailed information.

7

Q.3(a) What is Trip Generation? Explain in detail the factors governing trip

generation & attraction rates.

7

(b) The following data is collected for a town.

Zone 1 2 3 4 5 6 7

Population in

Zone (000) 25 19 29 24 17 18 22

Total Trips

Generated (00) 15 12 18 13 12 14 15

Develop a linear regression model for trips generated from a zone. If the

population in a particular zone increases to 86500, predict the expected trip

generation from that zone.

7

OR


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2

Q.3(a) The number of Trips produced in an attracted to the three zones A, B, and

C are shown below

Zone A B C Total

Trips produced 25 40 35 100

Trips attended 40 35 25 100

The closeness order of the zones is seen as per the following matrix.

D

O

A B C

A 1 2 3

B 2 1 3

C 3 2 1

The zonal L factor are given below

Zone L factor

1 0.035

2 0.025

3 0.04

Distribute the trips between the zones.

7

(b) Calculate the interzonal interchanges by competing opportunity model due

to 200 production at zone A., with 300 attraction at zone B, 200 attractions

at zone C, and 500 attractions at zone D. Assume that A-B is 10 minute, A-

C is 15 minute, and A-D is 20 minute.

7

Q.4(a) Explain Gravity Model. Derive the equation for the trip distribution by

gravity model.

7

(b) Compare Trip End Models & Trip Interchange Models in the Modal Split

Analysis.

7

OR

Q.4(a) Write short note on:

1. All or Nothing Assignment method.

2. Diversion Curve method

7

(b) Three zone A, b and C are connected by two lanes roads as shown in figure

below with travel time by bus shown in bracket and travel time by car.

A B C

ttcar= 20 ttcar= 10

ttbus= 25 ttbus= 15

The probability (Pc) of choosing the car mode is found to be given by

1

Pc= ----------------, where, u(x) = 0.86 - 0.08(ttcar ttbus).

1 + eu(x)

7


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3

The total trip exchange between zones are as follows :

From To Person-trip per day

A B 1200

B A 0

A C 500

C A 1800B C 400

C B 500

Determine the 2 way volume in car per day on the road AC if the average

car occupancy is 2.5.

Q.5(a) Which are the Urban forms? Describe the characteristics of each related to

the transportation planning.

7

(b) Compare between the BRT and Metro. Find the maximum capacity perhour of BRT and Metro for the frequency of 60 trips per hour on any

corridor.

7

OR

Q.5(a) What are the innovations in the Rapid Transit System? 7

(b) Describe briefly: Corridor identification and corridor screen line analysis. 7


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1





Subject Name: Urban transportation system


Instructions:

1.

Attempt all questions.2.



Q.1 (a) What are the goals and objectives of urban transportation planning?

Describe in detail.

07

(b) Describe the basic structure of transportation systems

(an overview)

07

Q.2 (a) Explain by drawing flow chart various steps involved in transportation

planning process.

07

(b) What are the factors responsible for travel demand explain in detail. 07

OR

(b) 1 Explain following terms with the help of sketch (i) cordon line (ii) intra

zonal trips (iii) interzonal trips (iv) screen line(v) Desire line

2. Define: - urban settlement, rural settlement.

07

Q.3 (a) Explain with example category analysis for trip generation analysis. 07

(b) Table shows data for vehicle trips per day, as related to income and persons

in house hold for one zone of study area develop trip generation equation

and find which model is more reliable

Income in

thousands

Persons in

house hold

Trips per

day

remarks

48 3 2

98 5 4

140 7 6

190 6 4

240 9 5

--- ---- ----

07

OR

Q.3 (a) What are methods of origin and destination study? Explain home interview

method in detail.

07

(b) Explain by drawing curve accuracy is checked by screen line analysis of O

& D studies data

07

Q.4 (a) Enlist the different methods of trip distribution methods explain in detail

average growth factor method.

07


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2

(b) A study area has been divided into four zones 1,2,3,4 the present trip

distribution matrix is given total future trip produced and attracted

develop future trip distribution matrix

D

O

1 2 3 4 Total

present

produced

Total

future

trips

1 - 45 55 35 135 300

2 45 - 65 25 125 375

3 20 60 - 45 125 2804 55 70 35 - 160 225

Total

present

attracted

trips

120 175 155 105 545 -

Total

future

attracted

trips

210 475 335 160 - 1180

Develop future trip distribution matrix using (i) uniform growth factor (ii)

average growth factor (iii) Detrit method.

07

OR

Q.4 (a) 1 What are the factors influencing on individual choice of travel mode

2 Describe in brief trip inter change and trip end model.

03

04

Q.4 (b) The probability of choosing the car mode (Pc) is found to be given

Pc=1/ (1+e-u(x)

). Where, u(X)=0.70-0.04(ttcar - ttbus)

ttcar = 15min ttcar = 15min

ttbus = 15min ttbus = 15min

the total trip exchanges between zones are as follows. Determine the

two way volume in cars per day on the roads AB and BC and if the

average car occupancy is 2.6

From To Persons trips per

day

A B 1200

B A 0

A C 800

C A 1600B C 900

C B 800

07

Q.5 (a) Explain Mass transit system and Mass rapid transit system

Also explain capacity of rapid transit system.

07

(b) Briefly explain the Moores algorithm of route assignment analysis. 07

OR

Q.5 (a) How will you identify potential corridor in urban road transit system.

Explain segment capacity.

07

(b) Explain aggregate and disaggregate approaches to travel demand. 07

*************


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Page 1of 2

Seat No.: _____ Enrolment No._______________

GUJARAT TECHNOLOGICAL UNIVERSITYBE-SEM-VII EXAMINATION Nov/Dec-2011

Subject code: 170605 Date:29/11/2011

Subject Name: Advanced Structural Analysis (EP-I)Time:10.30 am-1.00 pm Total Marks: 70

Instructions: 1. Attempt all questions.



4. Take E=2x108

kN/m2,I=1.5x10

-5m

4,A=0.003 m

2,G=0.8x10

8kN/m

2and

J=3.0x10-5

m4if not given.

Q-1 (a) Explain the concept of symmetry & antisymmetry giving appropriate examples. 07

(b) Enlist different loading facilities available in the structural analysis professional

software that you have learned. Explain any two loading facilities in detail.

07

Q-2 (a) Explain the concept of rotation of axes and derive relation AM=RT AS. 07

(b) Enlist steps involved in FEM analysis and explain any two in detail.

OR

07

(b) What is non linearity? Explain geometrical, material and loading non linearitygiving appropriate examples.

07

Q-3 Analyse the beam shown in fig.1 using stiffness member approach and plot SF &

BM diagrams. In addition to loading consider effect due to sinking of support at B

by 5 mm.

14

OR

Q-3 Analyse a truss shown in fig.2.to find displacements and member end forces

using stiffness member approach and symmetry. The values in bracket showscross sectional area of respective member.

14

Q-4 Analyse a plane frame as shown in the fig.3 using stiffness member approach and

find displacements only.

OR

14

Q-4 (a) Formulate rearranged SJ matrix for the grid shown in the fig.4. 07(b) Create an input file multiply. in to store elements of SFF

-1matrix and load vector

AFC.Write a C++ OOP program capable to read stored data from input file , carry

out matrix multiplication using a separate function and to store results as DF

matrix.

07

Q-5 (a) Write an input file using appropriate commands of a Professional Software you

have learned , that can handle modeling and analysis of the truss shown in thefig.2.

04

(b) For the column shown in the fig.5, determine nodal displacement and stress in

each element using finite element method.

OR

10

Q-5 (a) Explain plane stress and plain stain problems giving example of real life structure.

Give the constitution relationship for both the cases.

04

(b) Analyse the beam shown in the fig.6 to determine the slope at both the supports

using FEM.

10


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Page 2of 2

Fig.1 Q.3

450 mm

450 mm

10 kN

300x300 mm

150x150 mm

Fig.5 Q-5 (b)

A

Fig.2 Q-3 OR & 5(a)

60 kN

60 C

D

30

B

B

3 m(A) 3 m(A)

5m (2A)

4 m(A) 4 m(A)

20 kN/m

3 m 6 m

(I) (I)

3 m

A

B C

60 kN

Fi .4 Q-4 a OR

6 m

x

z

25 kNm

4 m(I)

A

2 m

Fig.6 Q-5 (b) OR

B

(I)

6 m

5 m

Fig.3 Q-4

50 kNm 80 kN

3 m 3 m

(I)

(I)


36/42

1





Subject Name: Advanced Structural Analysis


Instructions:

1.


3.


4. Draw neat & clean sketches with pencil only.

Q.1 (a) Explain the terms: Null Matrix, Band matrix and Transpose of a matrix. 07

(b) Derive element stiffness matrix for Constant Strain Triangle element by

direct approach.

07

Q.2 (a) Write a detail on Process of Discretization on finite element analysis. 07

(b) Determine the shape functions for the Constant Strain Triangle. Usepolynomial functions. 07

OR

(b) Determine the shape functions for the Constant Strain Triangle. Use natural

coordinate systems.

07

Q.3 (a) Derive the expression of a stiffness matrix of a member of a grid structure

with usual notations.

07

(b) Analyze the pin jointed truss for fig. 1 by stiffness matrix method using

member approach. Adopt cross sectional area of all members = 1000 mm2

and E = 200 kN/mm2.

07

ORQ.3 Analyze the frame for fig.2 by stiffness matrix method using member

approach.

14

Q.4 (a) Explain detail on Beam with Elastic supports. 07

(b) Write a computer program on analysis of continuous beam using stiffness

matrix method using C/C++.

07

OR

Q.4 (a) Explain Incremental analysis with Iteration technique. 07

(b) Derive the shape functions for four noded quadrilateral elements. 07

Q.5 A propped cantilever beam of length of 10 m fixed at one end supported by

a roller at the other end carries a 20 KN point load at the centre of the span.

By taking e = 200 GPa and I = 24 x 10-6

m4. Using finite element

determine:

1. Deflaction under load

2. SF and BM at mid span

3. Reactions at supports

14

OR

Q.5 (a) Determine the consistent nodal vector due to loads acting on the beam

shown in fig. 3.

07

(b) Write short note on Pre and Post Processors on FEA packages. 07*************


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2


38/42

1




Subject Name: Advanced Structural Analysis (Department Elective I)

Time: 10.30 am - 01.00 pm Total Marks: 70Instructions:1. Attempt any five questions.


3.


4. Take Modulus of elasticity = 200 GPa & Poissons ratio = 0.25, unless given.

Q.1 (a) For the beam shown in fig.-1, if the displacement at joints B(b) and C(c)

are 36.16/EI (anticlockwise) and -4.02/EI (clockwise) respectively due to

the loading given on it. Determine member end actions and draw S.F. &

B.M. diagrams.

07

(b) Write a C/C++ program to read the geometrical and structural data forplane truss structure and prepare member stiffness matrix along structural

axis (i.e SMSmatrix) for each member. Read data from user defined input

file and print appropriate results in user defined output file. Also prepare a

sample input file for a structure shown infig.-2.

07

Q.2 (a) Derive the relation for action or displacement vector on member axis and

structure axis for plane frame.

07

(b) For the plane frame shown in fig.-3, determine load vector for member BC

along structure axis using rotation transformation matrix.

07

OR

(b) List various methods for solution of linear simultaneous equations using

matrices. Give algorithm or C/C++ program for any of them.

07

Q.3 Analyse the plane truss shown in fig.-2 and determine deflections and

reactions at the joints. Determine member end actions also and tabulate

them.

14

OR

Q.3 Analyse the plane frame shown in fig.-3using member stiffness approach,

neglecting axial deformation condition. Use of symmetry may be

permitted. Determine support reactions. Draw B.M diagram neatly. Take

I/A=100.

14

Q.4 Find the displacement of the composite structure shown in fig.-4. Beam AB

is made up of concrete (E=20 GPa) with rectangular cross section of 150

mm x 200 mm, while cable CE is of steel (E=200 GPa) with 10 mmdiameter.

14

OR

Q.4 A symmetrical plane grid shown in fig.-5is made up of steel pipes of 300

mm outer diameter and of 8 mm thickness. Determine displacement at

joints and member end actions. Draw B.M, S.F and Torsional moment

diagrams. Take G=80 GPa.

14

Q.5 (a) List various steps involved in solution of problem using Finite Element

Method and explain descritizations in details.

05

(b) A steel tapered rod of 500 mm length, 40 mm diameter at top end and 20

mm diameter at bottom is kept vertical with fixed at top. Determine

stresses & strains in the rod due to its self weight and additional 20 kN load

acts in downward direction at free end. Take minimum two elements of 2

noded for your calculations.

09


39/42

OR

Q.5 (a) Explain the use nonlinear analysis of structure. List various methods to be

used in nonlinear analysis of structure and explain any one of them.05

(b) Determine the deformation at joints of a space truss shown in fig.-6using

Member Stiffness Approach. Use of symmetry is permitted.

09

Figures

2


40/42

1

Seat No.: _____ Enrolment No.______

GUJARAT TECHNOLOGICAL UNIVERSITY

B. E. VIIth

SemesterExamination Nov- 2011


Subject Name: Application of Geoinformatics in Civil Engineering

Date:29/11/2011 Time: 10:30 am 01:00 pmTotal Marks: 70

Instructions:




Q.1 (a) Explain basic concept and principle of remote sensing. 07

(b) Write in detail the distinguishing features of photograph and RS image. 07

Q.2 (a) Explain optical and infrared sensors. 07

(b) What are the techniques available for 3D viewing in digital

photogrammetry?

07

OR

(b) A vertical photograph was taken at a flying height of 5000 m above sea

level using camera with a 152 mm focal length lens. Determine the photo

scale at points A & B, which lie at elevations of 1200 and 1960 m.

07

Q.3 (a) Write comparative analysis of the following.

i)

Panchromatic imagesii) Multi-spectral images

iii)

Hyper-spectral images

07

(b) Write the functions of a GPS system. Write its utility in civil engineering

applications.

07

OR

Q.3 (a) Write brief notes on

i)

LISS

ii) WiFS

iii)SAR

iv) IRS

07

(b) Define DEM and write its applications. Mention the importance ofinterpolation techniques in generation of DEM.

07

Q.4 (a) Explain GIS Data types (i) Spatial data (ii) Attribute Data. 07

(b) Write details of the softwares GeoMedia orArcMap used in the field of GIS. 07

OR

Q.4 (a) Explain (i) Functions of GIS (ii) Advantages of GIS. 07

(b) Write details of the softwares ENVI orERDAS used in the field of RS 07

Q.5 (a) How GIS can play a role of decision support system in civil engineering? 07

(b) Write application of geo-informatics in disaster management. 07OR


41/42

2

Q.5 (a) Explain true color composites and false color composites. How it help in

image analysis?

07

(b) Carry out the raster data compression for the following raster grid (figure 1)

using value point encoding method.

Full Raster Encoding

COLUMNS

Rows

0

1

2

3

4

5

6

7

8

9 Figure 1 Raster grid

07

*************


42/42




Subject Name: Applications of Geoinformatics in Civil Engineering

Time: 10.30 am - 01.00 pm Total Marks: 70

Instructions:

1.

Attempt any five questions.2. Make suitable assumptions wherever necessary.


Q.1 (a) What is remote sensing? Discuss multi-concept of remote sensing and briefly

discuss application of remote sensing in water pollution monitoring.

07

(b) Define GIS and discuss various components of GIS. 04

(c) What is GPS? List applications of GPS in Civil Engineering. 03

Q.2 (a) What is photogrammetric surveying? Discuss types of photogrammetry and

types of aerial photographs.07

(b) The ground length of a line AB is known to be 545 m and the elevations of A

and B are respectively 500 m and 300 m above MSL. On a vertical photograph

taken with a camera having focal length of 20 cm include the images a and b of

these points, and their photographic co-ordinates are: (xa= +2.65 cm, ya= +

1.36 cm); (xb= -1.92 cm, yb= +3.65 cm). The distance ab scaled directly from

the photograph is 5.112 cm. Compute the flying height above MSL.

OR

07

(b) State reasons for overlaps in photogrammetry and list factors affecting selection

of flying altitude. Also briefly discuss flight planning for aerial

photogrammetry.

07

Q.3 (a) Discuss Active and Passive remote sensing system. Also discuss IRS series

development for remote sensing in India.

07

(b) Explain energy interaction with the Earths surface. Discuss spectral reflectance

curves for vegetation, bare soil and water Land Use/Land Cover classes.07

OR

Q.3 (a) Discuss applications and importance of High resolution and SeaWiFS sensors. 07

(b) Differentiate between Pixel and Mixed pixel and Explain various elements for

visual image interpretation.

07

Q.4 (a) Explain importance of contrast enhancement and discuss Min-Max. Contrast

enhancement technique for remote sensing data.07

(b) Discuss any one algorithm of supervised classification from the followings :

i) Minimum Distance to Means,

ii) Parallelepiped and

iii) Maximum Likelihood Classification

Also discuss accuracy assessment for remotely sensed image classification.

07

OR

Q.4 (a) Discuss ISODATA clustering algorithm and differentiate between supervised

and unsupervised classification.07

Q.4 (b) Discuss various input data and types of output products in GIS. 07

Q.5 (a) Discuss spatial data structures and modeling surfaces in GIS. 07

(b) Discuss Network analysis and digital terrain visualization in GIS. 07

OR

Q.5 (a) Discuss the terms Land Use (LU) and Land Cover (LC) and Discuss

application of Geoinformatics in LU/LC mapping

07

Paper Sem7

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Transcript of Paper Sem7