1 Seat No.: _____ Enrollment No.______ GUJARAT TECHNOLOGICAL UNIVERSITY B. E. VII th Semester–Examination – Nov- 2011 Subject code: 170601 Subject Name: Construction Management & Equipments Date: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 each activity 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 H 6 2 A F G I 4 1 3 2 4 5 6 B C D E 3 1 2 4 5 2 Figure 1
Transcript
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Seat No.: _____ Enrollment No.______
GUJARAT TECHNOLOGICAL UNIVERSITY B. E. VII
th Semester–Examination – Nov- 2011
Subject code: 170601
Subject Name: Construction Management & Equipments Date: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 each
activity 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
H
6
2
A F
G
I 4
1 3
2
4
5
6
B
C D
E
3
1
2
4
5 2
Figure 1
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 shovel
for 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? 07 OR
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 and
operation 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
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1 2
3
4 4(2) 7(5)
4(2) 5(2)
Figure 2
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Seat No.: ________ Enrolment No.______________
GUJARAT TECHNOLOGICAL UNIVERSITY BE- VII
th SEMESTER–EXAMINATION – 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.
3. Figures to the right indicate full marks.
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.
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 Management and Equipments
Total Marks: 70
1
2
4
3
5
6 8
7
Q-2( a ) 07
3-5-7
3-6-80-0-0
1-2-3 2-4-6
3-6-8 8-15-20
0.00 0.40 0.50 0.600.50 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 6-9-121-2-3
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 ZProbability
OR
Determine the aggregate resources requirements period by perid for the network given 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
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 year ( VI ) Lubrication oil cost / hour ( V ) Diesel cost / hour
The following data about power shovel are available
Engine : 160 HPCrank Case capacity=30 LitreUseful life 5 yearsTime between oil changes = 100 hours
Man power requirement
7
ORExplain the term " Job layout" and draw a job layout for a construction site of a large multistoreyed building
3155
13911
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
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
It has a drawbar pull of 4500kg while operating on a level surface in the fifth gear. The 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 UNIVERSITY BE SEM-VII Examination-Nov/Dec.-2011
Subject code: 170602 Date: 22/11/2011
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.
3. Figures to the right indicate full marks.
Q.1 (a) Explain the procedure of designing an irrigation channel
with Kennedy’s 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 hectares
when 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 based
on Lacey’s theory.
07
(b) Using Kennedy’s theory, design a channel section for the
following data:
Discharge, Q=25 cumec, Kutter’s 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 Bligh’s Creep Theory in details.
04
03
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 two
ends. 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
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.
Crop Base 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 Kennedy’s silt theory? Describe Lacey’s 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 Lacey’s theory, for the
following data:
(i) Full supply discharge = 10 cumec
(ii) Lacey’s 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 prevent
such failures.
07
(b) Explain Khosla’s method of independent variables for design of a weir. 07
2
OR
Q.4 (a) Draw a typical layout of a diversion headwork founded on a permeable soil.
Explain any three components shown therein.
07
(b) Details of an elementary profile of a weir with horizontal floor and a
downstream pile are as follows:
(i) Length of upstream floor = 10 m
(ii) Length of downstream floor = 20 m
(iii) Height of crest above the floor = 3 m
(No gates are provided over the crest).
(iv) Depth of the downstream pile = 4 m
Invoking Khosla’s theory, calculate,
(i) Uplift pressure at the key points
(ii) If thickness of concrete floor at downstream end of the structure is
1.0 m, find the corrected uplift pressures. Also check whether the
provided downstream end thickness is safe. Take specific gravity of
concrete = 2.24.
(iii) Check exit gradient with respect to safe exit gradient of 1/5.
07
Q.5 (a) Discuss, in brief, the various types of cross-drainage works on a canal,
including conditions of suitability of the each work.
07
(b) Explain functions of cross regulator and distributory head regulator. 07
OR
Q.5 (a) Discuss the methods for estimation of the design discharge and waterway
for a drain at an aqueduct.
07
(b) Explain method of finding out uplift pressure on barrels of a siphon
aqueduct.
07
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1
Seat No.: ________ Enrolment No.______________
GUJARAT TECHNOLOGICAL UNIVERSITY B. E. - SEMESTER – VII • EXAMINATION – WINTER 2012
Subject code: 170602 Date: 31/12/2012 Subject Name: Irrigation Engineering Time: 10.30 am - 01.00 pm Total Marks: 70 Instructions:
1. Attempt any five questions. 2. Make suitable assumptions wherever necessary. 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:
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, Kennedy’s silt theory for the design of unlined channel.
Explain ‘regime channel’ and state different regime conditions. Given the Lacey’s 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 Manning’s coefficient N = 0.014.
07
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 Lacey’s silt factor f = 0.95.
07
Q.4 (a) What is Diversion headwork? Sketch typical layout of a diversion headwork
scheme and explain the importance of the scouring sluices. 05
(b) The profile of a concrete slope weir is as shown in Fig.(1). Using Khosla’s 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 the
selection 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 Mitra’s 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, King’s vanes, Bed bars
06
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2
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY BE - SEMESTER–VII • EXAMINATION – SUMMER 2013
Subject Code: 170602 Date: 24-05-2013
Subject Name: Irrigation Engineering
Time: 02.30 pm - 05.00 pm Total Marks: 70 Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
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 ηa = 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,
(b) Design an alluvial canal by using Lacey’s 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 θ.
Design a triangular shaped lined canal from the following data:
(i) Discharge = 50 cumec
07
(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 Bligh’s 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 Lacey’s 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 Mitra’s method:
(i) Canal bed width = 20 m
(ii) Length of contraction transition = 10 m and that of the
expansion 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) Bligh’s 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
Seat No.: _________ Enrolment No._______________
GUJARAT TECHNOLOGICAL UNIVERSITY BE SEM-VII Examination-Nov/Dec.-2011
Subject code: 170603 Date: 24/11/2011
Subject Name: Structural Design I
Time: 10.30 am-01.00 pm Total marks: 70 Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
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/fy
is 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 torsion
bucking 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) width
is 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 C1 to C2
ABP 150 kN/m2 at 1.6 m depth
07
OR
(b) Write the steps for design of base plate. 07
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. Use
M20 – 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 plate
of 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
3
*************
Figure 1(Q. 5 (a))
2 – 25 mm dia.
1500 mm 1000 mm
30 mm cover 30 mm
cover
50 mm
cover
1
Seat No.: ________ Enrolment No.______________
GUJARAT TECHNOLOGICAL UNIVERSITY BE- VII
th SEMESTER–EXAMINATION – MAY/JUNE- 2012
Subject code: 170603 Date: 09/06/2012
Subject Name: Structural Design-I
Time: 02:30 pm – 05:00 pm Total Marks: 70
Instructions: 1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
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/mm2 and 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 plate
of 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/m2. 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 and
Fe415.
07
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 2.5m
effective length.
07
*************
1
Seat No.: ________ Enrolment No.______________
GUJARAT TECHNOLOGICAL UNIVERSITY B. E. - SEMESTER – VII • EXAMINATION – WINTER 2012
Subject code: 170603 Date: 01/01/2013 Subject Name: Structural Design - I Time: 10.30 am - 01.00 pm Total Marks: 70 Instructions:
1. Attempt any five questions. 2. Make suitable assumptions wherever necessary. 3. Figures to the right indicate full marks. 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 steel structures. 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 load 600kN. 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 the connections 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
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 OR Battening 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 16mm dia. 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
OR Q.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
*************
1/2
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY BE - SEMESTER–VII • 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.
2. Figures to the right indicate full marks.
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 few
characteristics of both types of steel.
(ii) Explain the purpose of Binding wires, Spacers, Chairs and Dowels from
detailing 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 structures
made 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. Assume
support 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 16
mm 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 centre
to 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 two
way 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 is
reinforced 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 a
factored 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
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 of
gusset 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 floor
Capable 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 M20
grade 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 of
1700 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
*************
1
Seat No.: _________ Enrolment No._______________
GUJARAT TECHNOLOGICAL UNIVERSITY BE SEM-VII Examination-Nov/Dec.-2011
Subject code: 170604 Date: 29/11/2011
Subject Name: Urban Transportation System
Time: 10.30 am-01.00 pm Total marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
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
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. Attempt any five questions. 2. Make suitable assumptions wherever necessary. 3. Figures to the right indicate full marks. 4. Take Modulus of elasticity = 200 GPa & Poisson’s ratio = 0.25, unless given.
Q.1 (a) For the beam shown in fig.-1, if the displacement at joints B(θb) and C(θc)
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 for plane truss structure and prepare member stiffness matrix along structural axis (i.e SMS matrix) 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 in fig.-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.-3 using 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 mm diameter.
14
OR Q.4 A symmetrical plane grid shown in fig.-5 is 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
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.-6 using Member Stiffness Approach. Use of symmetry is permitted.
09
Figures
2
1
Seat No.: _____ Enrolment No.______
GUJARAT TECHNOLOGICAL UNIVERSITY
B. E. VIIth Semester–Examination – Nov- 2011
Subject code: 170606
Subject Name: Application of Geoinformatics in Civil Engineering
Date:29/11/2011 Time: 10:30 am – 01:00 pm Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
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 images
ii) 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 of
interpolation 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 software’s GeoMedia or ArcMap 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 software’s ENVI or ERDAS 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. 07
OR
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
0 A A A A A A A A A A
1 A A A A A A A A A A
2 A A A A B B B B B B
3 A A A B B B B B B B
4 D D D D B B B B B B
5 D D D D D B B B B B
6 D D D D C C C C C C
7 D D D D C C C C C C
8 D D D D C C C C C C
9 D D D D C C C C C C Figure 1 Raster grid
07
*************
1
Seat No.: ________ Enrolment No.______________ GUJARAT TECHNOLOGICAL UNIVERSITY
B. E. - SEMESTER – VII • EXAMINATION – WINTER 2012 Subject code: 170606 Date: 28/12/2012 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. 3. Figures to the right indicate full marks.
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 Earth’s 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
(b) Enlists various types of Natural Disasters and state application of Geoinformatics in assessment of damage occurred due to disasters.
