Diploma in Civil Engineering · (a) What is bar bending schedule? State any two advantages of preparing bar bending schedule. (b) State Rules of Deduction as per IS 1200 for (i) Brickwork

G Scheme Fifth Sem MSBTE QUESTION PAPERS

Sanjay Ghodawat Polytechnic, Atigre Prepared By V.S. Kumbhar 1

Third Year

Diploma in

Civil Engineering Fifth Semester

MSBTE

Question Papers



Sr. No.

Course/

Semester/

Master

Subject Subject

ABBR

Subject

Code

Page

No.

1

CE - 5- G

Estimating and Costing EAC 17501

2 Irrigation Engineering IEN 17502

3 Public Health Engineering PHE 17503

4 Concrete Technology CTE 17504

5 Design of Steel Structures DSS 17505



Estimating and Costing - 17501

Winter 2016 17501 16117

4 Hours / 100 Marks Seat No.

Instructions : (1) All Questions are compulsory.

(2) Answer each next main Question on a new page.

(3) Illustrate your answers with neat sketches wherever necessary.

(4) Figures to the right indicate full marks.

(5) Assume suitable data, if necessary.

Marks

1. (A) Attempt any THREE of the following : 12

(a) What is estimating & costing and state two purpose of estimating

& costing.

(b) State the local rate of following materials :

Murrum, Traditional Bricks, Cement, Rubble

(c) State the units of measurement for following item of work:

Flooring, concrete, basin & plastering.

(d) List different types of detailed estimate.

(B) Attempt any TWO of the following : 08

(a) What is bar bending schedule? State any two advantages of

preparing bar bending schedule.

(b) State Rules of Deduction as per IS 1200 for

(i) Brickwork for walls. (ii) Painting work (Internal)

(c) State situation under the following estimates prepared :

(i) Revised estimate (ii) Approximate estimate

2. Attempt any TWO of the following : 16

(a) Describe the procedure for preparation of approximate estimate

of an irrigation project.

(b) Describe the procedure for preparing approximate estimate of

road project.

(c) Prepare approximate estimate of a bridge having 5 spans of 40

m each using following data :

(i) Cost of existing bridge ` 1.2 cr.

(ii) Existing bridge having 3 span of 50 m each.



3. Attempt any FOUR of the following : 16

(a) Prepare check-list of R.C.C. framed structure for preparing a

detailed estimate.

(b) What is prime cost & pay work ?

(c) A R.C.C. Lintel size 250 × 150 mm & clear span of 1.5 m is

reinforced with 4 bars of 10 mm f @ bottom & 3 bars of 8 mm f @ top.

The stirrups of 6 mm Ø are provided 150 mm c/c. Bearing of lintel is

150 mm. Calculate the total quantity of steel reinforcement.

(d) Explain the long wall & short wall method for taking out

quantities.

(e) What is work charged establishment & contingencies ?


(a) State and explain four factors affecting rate of an item.

(b) Prepare rate analysis for U.C-R masonry in C.M. (1:5) for

foundation.

(c) Prepare rate analysis for B.B. masonary in C.M. (1:6) 300 mm thick

wall.


(a) Find quantity of brickwork, P.C.C., excavation and internal

plaster for a underground water tank. (Fig. 1)

All dimensions are in metre.

Fig. 1

(b) Work out the quantity of following items for septic tank having

internal size 1.5 m × 3.5 m and height 1.50 m. The top of slab of

septic tank is 20 cm above ground level.

(i) Earthwork in excavation. (ii) P.C.C. (M15) 15 cm thick



(iii) B.B. masonry in C.M. (1:6) 300 mm thick.

(iv) R.C.C. slab M20 on septic tank 12 mm thick 15 cm offset is

provided for P.C.C. on all sides of septic tank.

(c) Work out the quantity of concrete and steel in footing for RCC

column given in (see fig.-2) using following data.

Fig. – 2

Column No. Column Size Footing size de/ds Footing reinforcement

C2 07 230 × 300 1000 × 1200 350/150 10f@150 c/c

both way

Assume suitable cover to the reinforcement.


(a) Prepare rate analysis for mosaic tile flooring 20 mm thick.

(b) Explain the factors to be considered in preparation of detailed

estimate.

(c) What are the different methods used for calculation of earthwork

quantities for road & canal ? Explain any one.

(d) What is task work ? State any three factors affecting task work.

(e) Explain the procedure for preparation of detailed estimate for a

small R.C.C. slab culvert.

(f) Describe the procedure for preparing rate analysis.



Summer 2016 17501 15162

4 Hours / 100 Marks Seat No.

Instructions : (1) All questions are compulsory.

(2) Answer each next main question on a new page.




Marks

1. A) Attempt any three of the following : 12

a) State the meaning of terms estimating and costing. Enlist its purposes.

b) Enlist types of estimates. Mention the situations when supplementary

estimate is prepared.

c) State mode of measurement for

i) P.C.C. (1 : 2 : 4) ii) Manholes and inspection chambers

iii) Wood work for door frame iv) 10 cm thick brick wall.

d) Explain cubic content method of approximate estimate.

B) Attempt any one of following : 6

a) Draw the standard formats of measurement sheet, abstract sheet and

face sheet.

b) Describe the following terms and state purpose of each

i) Contingencies

ii) Work charged establishment

iii) Centage charges.

2. Attempt any two of following : 16

a) Describe how will you prepare an approximate estimate for a cinema

theatre of 1000 seats by using service unit method.

b) Prepare approximate estimate of a town hall building having plinth area

equal to 1500 m2.

i) Plinth area rate Rs. 4,000 per m2

ii) Water supply and sanitary installation – 5 % of cost of building

iii) Electric installation – 10 % of cost of building

iv) Other services – 5 % of cost of building

v) Contingencies – 3 % of overall cost of building

vi) Supervision charges – 8 % of overall cost of building.

c) Calculate quantity of earthwork of road with following data using mean

area method



Distance m 160 200 240 280 320 360

G.L. m 50.60 50.70 51.20 51.40 51.30 50

Formation width = 12 m. Formation R.L. of starting chainage 160 m. Is

51.20 m having falling gradient 1 in 40 side slope 2 : 1.

3. Attempt any four : 16

a) State and explain factors affecting process of rate analysis.

b) Enlist the data required for detailed estimate and write necessity of

each.

c) Give the hire charges for following machinery/equipments :

i) Concrete mixer ii) Truck

iii) Vibrator iv) Rammer.

d) Describe D.S.R. State its uses.

e) Calculate the quantities of following items of work for a circular

community well as shown in Figure No. 3 :

i) Excavation in soft murum

ii) RCC Ring Beam.

f) State the rules of deduction for plastering as per IS : 1200.

4. A) Workout quantities of any three items of work for figure no. 1 12

i) Earthwork in excavation

ii) U.C.R. masonry in C.M. 1 : 6 in foundation and plinth

iii) Brickwork in C.M. 1 : 5 in superstructure, Thk. – 30 cm

iv) R.C.C. work in roof slab (M20 concrete).

B) Attempt any one of the following : 6

a) Workout quantity of 6 mm, 10 mm and 16 mm reinforcement for a

rectangular beam of size 230 × 500 mm. The beam is reinforced with 2

No’s – 10 mm at top, 2 No’s 16 mm at Bottom, 2 No’s – 16 mm

bent up, 6 mm two legged stirrups are provided at 150 mm c/c

throughout the length. Length of beam is 4.5 m.

b) Workout the quantities of cement, sand and bricks required for 40 m3

brick masonry in cement mortar 1 : 6.

5. Attempt any two of the following : 16

a) Prepare rate analysis for U.C.R. masonry in C.M. 1 : 5 in foundation and

plinth.

b) Prepare rate analysis for plain cement concrete of grade M 15 (1 : 2 : 4).



c) Find quantity of brickwork, bed concrete and excavation for underground

water tank. Shown in figure no. 2.

6. Attempt any four : 16

a) Describe long wall and short wall method for calculating quantities of

items of work.

b) State four factors affecting taskwork.

c) Workout quantity of materials required for 12 mm thick plaster in C.M. 1

: 4 for 200 m2 area.

d) State the names of softwares that are used for preparation of detailed

estimates of building works.

e) State any four advantages of using softwares/programmes for

estimating and costing.

Fig. No. 1 (Q. No. 4 a) Fig. No. 2 (Q. No. 5 c)

Fig. No. 3 (Q. No. 3 e)



IRRIGATION - 17502

Winter 2016 17502 16117 3 Hours / 100 Marks Seat No.






Marks

1. (A) Attempt any THREE : 12

(a) Define runoff ? State the various factors affecting runoff.

(b) What is rain gauge ? Explain any one recording type rain gauge

with a neat sketch.

(c) Compute the MFD of a stream over a catchment area of 150

km2 using :

(i) Dicken‟s formula (C = 27) (ii) Ingli‟s formula

(d) Define Duty. State the factors on which duty depends.

(B) Attempt any ONE : 6

(a) An area contains three rain gauge stations which are equidistant

from each other at a distance of 5 km. The rainfall measured at

each station is 4.8 cm, 3.2 cm & 8 cm.

Calculate the mean precipitation for the area by using Thiessen‟s

method.

(b) The capacity-elevation curve of a proposed irrigation reservoir

having 20 km2 of catchment, is represented by the following data :

Elevation in m 600 602 604 606

Capacity in ha.m 24.20 26.20 30.30 36.80

The rate of silting for the catchment has been assessed to be 300

m3/km2/year. Assuming the life of the reservoir to be 50 years,

compute the dead storage, and the LSL, if the main canal is 6 km

long with a bed slope of 1 in 1000, and the canal bed level at the

tail end is at RL 594.500 m. The FSD of the canal at the head is 80 cm.

The crop water requirement is assessed as 250 ha.m.



2. Attempt any FOUR : 16

(a) Draw a neat sketch of Area-capacity elevation curve. Describe

how to interpret various parameters from this curve.

(b) What do you understand by the term „silting of reservoir‟ ?

Explain the measures to be taken to minimize the silting of reservoir.

(c) Differentiate between Earthen dam and Gravity dam.

(d) Enlist the types of failure of earthern dams and explain any one

with a neat sketch.

(e) Draw a neat and labelled sketch of drainage arrangements in

an earthen dam.

(f) List various types of spillways and explain any one with a sketch.


(a) Differentiate high dam with a low dam ? Explain with a neat

sketch.

(b) What are the salient features of radial gate ? State where it is

suitable.

(c) State the function of an energy dissipator. Where is it located ?

What will happen if it is omitted ?

(d) Draw a layout of lift irrigation scheme & enlist the various valves

provided in lift irrigation scheme.

(e) What are the advantages and disadvantages of Bandhara

Irrigation ?

4. (A) Attempt any THREE : 12

(a) Compare solid and open Bandharas.

(b) What is the need of drip irrigation ? What are the components of

drip irrigation ?

(c) Differentiate between weir and barrage.

(d) Draw the layout of diversion headworks and give the function of

each components.

(B) Attempt any one : 6

(a) Explain percolation tank with a neat and labelled sketch and

state the criteria‟s considered for the selection of site for the

construction of percolation tank ?



(b) Calculate the balancing depth for a channel section having a

bed width equal to 18 m and side slopes of 1:1 in cutting and 2:1 in

filling. The bank embankments are kept 3.0 m higher than the

ground level and crest width of banks is kept as 2.0 m.

5. Attempt any TWO : 16

(a) The gross command area of the distributary is 3000 hectares of

which 1800 hectares is covered by forests and 400 hectares by

pasture land. Intensities of sugarcane and wheat crops are 20% and

40% respectively. The duties of the crops at the head of the

distributary are 730 ha/cumec and 1800 ha/cumec respectively,

find :

(i) The discharge required at the head of the distributary.

(ii) The design discharge at the head of water course assuming time

factor equal to 0.8 and 15% transmission losses.

(b) Draw a neat and labelled diagram of cross-section of an

earthen dam. Describe the methods of construction of earthen

dam.

(c) What is the necessity of C.D. works ? What are the different types

of C.D. works ? Explain one with a neat sketch.


(a) Enlist the component parts of the barrage and state their

functions.

(b) List the various types of weirs and explain any one with a neat

sketch.

(c) Classify canals according to alignment and its position in the

canal network.

(d) State the objectives of canal lining.

(e) State the precautions to prevent a land from getting

waterlogged.



Summer 2016 17502

15162 3 Hours / 100 Marks Seat No.






(6) Use of Non-programmable Electronic Pocket Calculator is permissible.

(7) Mobile Phone, Pager and any other Electronic Communication

devices are not permissible in Examination Hall.

Marks

1. A) Attempt any three : (3×4=12)

a) Define :

i) Rainfall ii) Run off iii) Rainfall intensity iv) Yield.

b) Explain the four factors affecting run off.

c) Calculate the yield and maximum flood discharge from a

catchment area 60 km2, having average annual rainfall 760 mm by

using Inglis formula.

d) What is a crop season ? Name crop seasons adopted in

Maharashtra with their respective periods.

B) Attempt any one : (1×6=6)

a) Calculate the average annual rainfall of a catchment, from

following data by using Arithmetic

mean method and Theissons polygon method.

Area of polygon (Ha) 100 150 200 75 125 400

Rainfall in mm 600 550 650 580 620 700

Also calculate dependable yield from above catchment at 60%

dependability. Take runoff coefficient 0.45.

b) Fix the control levels DSL, FRL, HFL and TBL from following data :

i) Effective storage required 3000 Ha.m.

ii) Carry over allowances and tank losses – 25%.

iii) Dead storage – 10% of gross storage.

Contour RL (m) 580 582 584 610 612 614

Storage (Mm3) 3.0 4.5 6.0 30 40 50

Assume flood lift as 1.5 m and free board as 2.5 m.



2. Attempt any four : (4×4=16)

a) Explain the various engineering surveys to be conducted for an

irrigation project. Enlist the data to be collected for the same.

b) Describe the four factors affecting the rate of siltings with

suggestive control measures.

c) List the eight types of repairs and maintenance works for an

earthen dam.

d) Draw a neat labelled sketch of cross section of a zoned type

earthen dam. Write names to component parts of earthen dam.

e) Give four points of comparison between gravity dam and

earthen dam with respect to foundation, seepage construction and

maintenance.

f) Define – spillway and write two functions of spillway. Also draw

neat cross section of ogee spillway and bar type spillway.


a) Differentiate between theoretical and practical profile of gravity

dam.

b) Explain the importance of drainage gallery and joints in gravity

dams.

c) Explain working of radial gate with the help of neat sketch

showing names to component parts of it.

d) Draw a plan and section of a Bandhara Irrigation System.

e) Write the need and suitability of site for construction of

percolation tanks.


a) Explain the functioning of lift irrigation scheme with the help of

layout showing components of it.

b) Describe the operation of drip irrigation with help of neat layout

showing essential component parts.

c) Draw the neat layout of diversion head work and write functions

of following components of it :

i) Head regulator

ii) Divide wall

iii) Fish ladder

iv) Scouring sluices.

d) Differentiate between weir and barrage (any four points).

B) Solve any one : (1×6=6)

a) Classify the canals according to alignment and position in canal

network. Show location plan of each.

b) Explain the working barrage with the help of neat plan and

elevation proposed across arriver having width 60 m.



5. Attempt any two : (2×8=16)

a) Find the design discharge of canal by using following data :

Sr. No. Name of crop Area irrigated (ha) Duty (ha/cumec)

1 Paddy (KH) 200 600

2 Wheat (Rabi) 350 1200

3 Groundnut (KH) 600 800

4 Gram (Rabi) 400 1700

5 Vegetables (Rabi) 350 700

Assume :

i) Base period as per season

ii) Transit losses – 15%

iii) Time factor – 7/12

iv) Capacity factor – 0.8.

b) Describe the types of failures of earthen dams and remedial measures.

c) Suggest and draw line sketch of the type of cross drainage works under

following four situations.

Case Nallah Bed level Nallah HFL Canal Bed level FSL of Canal

(m) (RL) (m) (RL) (m) (RL) (m) RL

I 100.00 106.00 107.00 110.00

II 108.00 110.00 105.00 107.00

III 100.00 104.00 102.00 104.00

IV 100.00 104.00 100.00 102.00


a) Explain the construction and operation of KT weir.

b) Mention four advantages of sprinkler irrigation over canal

irrigation.

c) Draw the cross section of canal in embankment and partial

cutting and embankment.

d) Explain four causes and corresponding preventive measures of

water logging.

e) Compare between aqueduct and super passage.



PUBLIC HEALTH ENGINEERING - 17503

Winter 2016 17503






(5) Use of Non-programmable Electronic Pocket Calculator is permissible.



Marks


(a) State the factors affecting rate of demand. (any four)

(b) Draw layout of water supply scheme.

(c) State the various methods of forecasting of population Explain

any one.

(d) State the Necessity and Importance of Ground water

recharging.

(B) Attempt any ONE of the following : 6

(a) Describe Break point chlorination with the help of graph and

state the importance of residual chlorine.

(b) State the factors governing the location of an intake structure.


(a) State the objects & methods of Aeration.

(b) Draw & label flow diagram of water treatment plant.

(c) Define Disinfection. State its objects.

(d) Describe the theory of filtration.

(e) Differentiate between dead end system and grid iron system of

distribution of water.

(f) Explain construction and working of slow sand filter.


(a) Draw a labelled sketch of clariflocculator.

(b) Define coagulation and state purpose of using alum as

coagulant.

(c) Explain the process of prevention of pollution of bores and bore

wells.

(d) State the types and functions of distribution of water. (one

function each)



(e) Define chlorination & state its types.

(f) State the necessity and importance of sanitation.


(a) Define sewage and sullage.

(b) Define trap and draw the sketch of any two types of Trap.

(c) Draw the layout drainage plan for building sanitary fittings.

(d) State the various system of plumbing. Explain any one.

(e) State the types of sewers and mention purpose of each.

(f) Define B.O.D. and state its significance in sewage treatment.


(a) Describe the process of Sludge digestion.

(b) Describe the working of septic tank with its L-Section.

(c) Write the procedure of laying of sewer.

(d) Draw a flow diagram of suitable sewage treatment process for

Rural

area.


(a) Describe rainwater and sewage collection system for residential

building.

(b) Design a circular sewer using the following data :

Population = 30,000 souls

Rate of water supply – 135 lpcd

N = 0.015

Max Flow = 2 × Average flow


(a) State the objects of sewage treatment.

(b) State the norms suggested by Maharashtra Pollution Control

Board for the discharge of treated sewage. (any four)

(c) Draw the General layout and Flow diagram of sewage

treatment plant.

(d) Explain the component parts of Manholes and Drop Manhole.

(e) Define Self Cleansing velocity, vent pipe, water closet & C.O.D.

(f) Explain the working of Trickling Filter with a neat sketch.



Winter 2015 17503







(6) Use of Non-programmable Electronic Pocket Calculator is

permissible.



Marks


(a) State any four factors affecting rate of demand. Explain any one

in detail.

(b) Enlist four bacteriological tests need to be conducted on water.

(c) Define aeration. Enlist different methods of aeration.

(d) Define sedimentation. State different types of sedimentation

tanks.


(a) Enlist six factors to be considered while selecting site for intake.

(b) Explain with neat sketch Jar Test.


(a) Draw flow diagram for water treatment plant. State one function

of any four units.

(b) State the theory of filtration.

(c) Define the term “residual chlorine”. State its importance in

disinfection.

(d) Enlist different types of valves used in water supply pipeline.

Explain any one with respect to use, location and function.

(e) State different types of traps. Enlist four qualities of good trap.

(f) Enlist plumbing accessories required for plumbing of residential

building.


(a) Draw a neat labelled sketch of two pipe system of plumbing.

(b) State permissible limit for potable water (As per IS 10500 : 1991)

for total solids, pH, Hardness, chlorides.

(c) Enlist four principles regarding design of building drainage.

(d) Draw neat labelled sketch of „pressure filter‟.

(e) Define – (i) Self-Cleaning velocity (ii) Non-Scouring velocity




(a) Explain „inspection chamber‟ with respect to necessity, location,

size and shape.

(b) Draw layout plan for building sanitary fittings for a residential

building.

(c) Enlist various methods of distribution systems of water. State any

two advantages and disadvantages of any one method.

(d) Draw a neat labelled sketch of drop manhole.


(a) From the following census data calculate probable population in

the year

1970, 1980, 1990 :

Year 1930 1940 1950 1960

Population 10,000 14,000 19,000 25,000

Use Geometrical increase method.

(b) Define soil pipe, vent pipe, sullage, waste pipe.


(a) Design circular sewer using following data :

Population – 40,000

Total water supplied = 300 lpcd

Sewage to be carried = 80%

Velocity = 1 m/s

(b) Enlist any four units of sewage treatment plant. State function of

each.

(c) Explain oxidation pond.

(d) State MPCB norms for discharge of treated sewage.

(e) Explain the concept of rainwater harvesting with respect to

necessity and methods.

(f) Explain „Activated Sludge Process‟.


(a) Draw general layout and flow diagram of sewage treatment

plant.

(b) Define „BOD‟ and „COD‟. State its significance in treatment of

sewage.

(c) Enlist different methods of layout of distribution of water. Explain

any one in detail.

(d) Explain in brief testing and maintenance of sewers.

(e) Enlist various pipe materials used for conveyance of water.



CONCRETE TECHNOLOGY - 17504

Summer 2016 17504








permissible.



Marks

1. A) Attempt any three of the following. (3×4=12)

a) Enlist any four physical properties of OPC. Explain how fineness of

cement is determined by method of sieving.

b) State three different grades of cement and where it is used.

c) Compare the properties of rapid hardening cement and low

heat cement.

d) Explain the step by step procedure of standard consistency test

on cement.

B) Attempt any one of the following. (6×1=6)

a) Explain the phenomenon of bulking of sand. State the effects of

bulking of sand on concrete.

b) State any four properties of coarse aggregate and explain the

method to determine abrasion value of coarse aggregate.

2. Attempt any four of the following. (4×4=16)

a) State the necessity of supervision for concreting operation (any

four).

b) Explain the 3 grades of concrete as per the provisions of IS 456-

2000.

c) State any four factors affecting the workability of concrete.

d) State any four precautions to be taken to avoid segregation.

e) State any four objectives of concrete mix design.

f) State the importance of NDT of concrete and explain rebound

hammer test.

3. Attempt any four of the following : (4×4=16)

a) Explain flakiness index and elongation index.

b) What is meant by grading of aggregates ? Explain :



i) well graded ii) gap graded and iii) poor graded aggregates.

c) Crushing value test was conducted on coarse aggregate in the

laboratory and the observations are recorded as given below. Find

average crushing value of coarse aggregate and state its suitability.

SI. No. Sample No. I II III

1. Weight of oven dried sample (w1)in gms 3150 3085 3212

2. Wt. of fraction passing 2.36 mm(w2) sieve in gms 570 582 602

d) Define Bulk density of aggregates. State three factors that affect

the bulk density.

e) Explain the procedure to determine impact value of coarse

aggregate.

4. A) Attempt any three of the following (3×4=12)

a) What is meant by batching ? Explain the two types of batching.

b) State any four advantages of compaction by vibrators.

c) State any four differences between steel formwork and timber

formwork.

d) Explain the two different methods of water proofing.

B) Attempt any one of the following. (6×1=6)

a) What are the precautions to be taken during transportation of

concrete?

b) What are the precautions to be taken while placing the concrete

in formwork?


a) Define admixtures. State any four types of admixtures and their

use.

b) State the advantages of ready mix concrete.

c) State the effects of hot weather on concrete and explain the

precautions to be taken during hot weather concreting.

d) State any four properties of fibre reinforced concrete.

e) Compare accelerating admixtures with retarding admixtures.

f) List any four types of special concretes. Explain the properties and

limitations of light weight concrete.


a) What are the precautions to be taken during mixing of concrete?

b) Explain the method of joining old and new concrete.

c) What are super plasticizers ? State the properties and uses of

super plasticizers.

d) State the properties of High performance concrete and its uses.

e) State any four factors affecting durability and impermeability of

concrete.

f) Define mix design and enlist the different methods of mix design of

concrete.



Winter 2015 17504








permissible.



Marks

1. A) Attempt any three of the following : 12

a) Define hydration and hardening of cement.

b) What is initial and final setting time of cement.

c) Enlist four field tests for cement.

d) Enlist ingredients of cement.

B) Attempt any one of the following : 6

a) Explain with neat sketch the experimental procedure to

determine crushing value of aggregates.

b) Sieve analysis was conducted on sand with 500 gm of sample

and observations are as below. Determine F.M. of sand

Sieve size (mm) 10 4.75 2.36 1.18 600 300 150

Weight Retained (gm) 0 10 50 50 95 185 110

2. Attempt four of the following : 16

a) Define workability and explain any 3 factors affecting workability

of concrete.

b) State different methods of mix design and explain any one in

detail.

c) State two advantages and two dis-advantages of rebound

hammer test.

d) Define bleeding, segregation, shrinkage and creep.

e) Explain the procedure for determination of compressive strength

of concrete cubes.

f) State Duff Abraham‟s Law and its equation.




a) Define formwork and enlist four requirements of good formwork.

b) Enlist different methods of transportation of concrete and explain

any one.

c) Enlist four precautions to be taken while placing the concrete.

d) State four precautions to be taken during compaction of

concrete.

e) Define curing and state necessity of curing.

f) Give types of joints and enlist any 6 materials used for filling joints.

4. A) Attempt three of the following : 12

a) Explain phenomenon of bulking of sand.

b) Explain in detail ultrasonic pulse velocity test.

c) Differentiate between weight batching and volume batching

(any 4 points).

d) Enlist any 4 precautions to be taken while storing the cement.

B) Attempt one of the following : 6

a) Explain the experimental procedure to determine silt content of

sand sample.

b) Explain with sketch slump cone test.


a) Enlist any 4 methods of waterproofing and material used for each

method.

b) Enlist different types of admixtures and function of each (any 4).

c) State 2 advantages and 2 limitations of RMC.

d) What is fibre reinforced concrete ? Write any 2 applications of it.

e) Write short note on light weight concrete.

f) Enlist any 4 effects of hot weather on concrete.


a) Write four reasons why grading of aggregate is necessary.

b) Define flakiness index and elongation index.

c) Write stripping time for removal of formwork for

i) Slabs with props left in position

ii) Beams soffits with props left in position.

d) Enlist any 4 precautions to be taken during cold weather

concreting.

e) Define admixtures and state any 3 purposes of using admixtures in

concrete.

f) Write short note on self compacting concrete.



DESIGN OF STEEL STRUCTURES - 17505

Summer 2016 17505







permissible.

(6) Formula sheet is allowed.

Marks


a) What are the types of loads to be considered while designing the

steel structures?

b) Draw any four types of structural steel sections.

c) Define Limit state and state different types of limit states.

d) State with sketch different single and built-up sections of structural

steel members used as tension member.


a) Design a suitable fillet weld to connect a tie bar 80 mm × 8 mm to

10 mm thick gusset plate. Design the joint for full strength of the tie

and assume welding on all three sides as shown in figure no. 1

Figure No. 1

Take fy = 250 MPa, 1.1 mo γ = and fu = 410 MPa

b) Two ISA 80×80×6 is connected back to back on either side of 10

mm thick gusset plate using fillet weld. Determine tensile strength of

member from yield criterion only. for ISA 80×80×6, Ag = 929 mm2 Czz

= 21.8 mm. Take fy = 250 MPa, 1.1 mo γ = and fu = 410 MPa.


a) A lap joint consists of two plates of 100 mm×10mm connected by

20mm dia. bolts of grade 4.6. All bolts are in one line. Calculate

strength of single bolt and number of bolts to be provided in the

joint.

b) A discontinuous compression member consists of 2 ISA 90×90×10

mm connected back to back on opposite sides of 12 mm thick



gusset plate and connected by welding. The length of strut is 3 m. It

is welded on either side. Calculate design compressive strength of

strut. For ISA 90×90×10, Cxx = Cyy = 25.9 mm Ixx = Iyy = 126.7×104

mm4, rzz = 27.3 mm values of fed are

KL/r 90 100 110 120

fed (N/mm2) 121 107 94.6 83.7

c) Check whether [email protected] kg/m is suitable or not as a simply

supported beam over an effective span of 6 m. The compression

flange of beam is laterally supported throughout the span. It carries

udl of 15 kN/m (including self wt.). Properties of ISMB 250 are bf = 125

mm, tf = 12.5 mm, tw = 6.9 mm, Ixx = 5131.6×104 mm4, Zxx = 410×103

mm3, r1 = 13.0 mm, zpx = 465.71×103mm3, 1.1 mo γ = , 1 b β = and fy

= 250 MPa.


a) State any modes of failure of bolted joints.

b) State any four advantages and disadvantages of welded

connections over bolted connections.

c) Draw neat sketches of HOWE and NORTH LIGHT trusses. Mark

panel, panel point, rafter and tie in any one truss.

d) Draw neat sketch of six panel truss showing main tie, principle

rafter, pitch and span. Also state any two uses of steel roof truss.

e) What is purlin ? State IS : 800 – 2007 procedure for design of angle

purlin.


a) Sketch different cross sections used for compound struts and built

up columns.

b) State effective length for a compression member having and

conditions as

i) Restrained against translation and free against rotation at one end

but roller supported at the other end.

ii) Restrained against translation and free against rotation at both

ends.

c) Draw neat sketch showing single lacing system. Why lacing is

used?

d) Limiting width to thickness ratio for single angle strut of semi-

compact class is 15.7 ∈.

State whether ISA is 100×100×6 is of semi-compact class or not. Take

fy = 250 MPa.


a) State and explain three modes of failure of axial tension member.

b) Design a suitable angle section as a tie member in a truss to carry

factored load of 215 kN.



Use double angle section connected back to back on either sides

of 12 mm thick gusset plate by means of 4 – 20 mm dia. bolts in one

line. Assume design strength of 20 mm dia.

Bolt = 45.3 kN, α =0.8, β=1.08 γmo = 1.1, m1 γ = 1.25, fy = 250 MPa, fu

= 410 MPa.

Available sections Gross Area (mm2)

ISA 80×50×8 978

ISA 100×75×6 1014

ISA 125×75×6 1166


a) A hall of size 12m×18 m is provided with Fink type trusses at 3 m

c/c. Calculate panel point load in case of Dead load and live load

from following data.

i) Unit weight of roofing = 150 N/m2

ii) Self weight of purlin = 220 N/m2

iii) Weight of bracing = 80 N/m2

iv) Rise to span ratio = 1/5

v) No. of panels = 6

b) An industrial building has trusses for 14 m span. Trusses are spaced

at 4m c/c and rise of truss is 3.6m. Calculate panel point load in

case of live load and wind load using following data :

i) Coefficient of external wind pressure = – 0.7

ii) Coefficient of internal wind pressure = •} 0.2

iii) Design wind pressure = 1.5 kPa

iv) Number of panels = 08

c) Design a slab base for column ISHB 400 @ 82.2 kg/m to carry

factored axial compressive load of 2000 kN. The base rests on

concrete pedestal of grade M20. For ISHB 400, bf = 250 mm, fy = 250

MPa, fu = 410 MPa, 1 1 mo γ = ⋅ , tf = 12.7 mm.


a) For a beam ISWB600, section is insufficient. Suggest suitable

remedy with sketches.

b) State classification of cross sections of beams based on moment

rotation behaviour.

c) What is plate girder ? Write functions of web plate and bearing

stiffeners.

d) Draw neat labeled plan and sectional elevation of gusseted

base.

e) What is the basic concept of deciding the plan area of slab base

and concrete block below it ? State the function of cleat angle and

anchor bolt in case of slab base.



Summer 2015 17505








permissible.



MARKS


a) State six advantages and two disadvantages of steel as a

construction material.

b) State different types of limit state and describe any one of them.

c) State types of loads to be considered while designing a steel

structure. Also state respective I.S. codes.

d) List types of failures in case of Tension member and describe any

one of them with a neat sketch along with labelling.


a) A tie member 100 × 10 mm has to transmit an axial load of 100 kN.

Design fillet weld and calculate necessary overlap by assuming

welding on all four sides. Also draw a neat sketch of connection.

Take permissible shear stress in weld material as 108 MPa.

b) A single angle 150 × 90 × 10 mm is used as a tension member.

Connected to 12 mm thick gusset plate at ends with 5 of 18 mm dia.

bolts. Bolts are pitched at 50 mm. Find Net area, if

i) longer leg connected to gusset plate

ii) shorter leg connected to gusset plate.


a) A lap joint consists of two plates 200 × 12 mm connected by

means of 20 mm dia. bolts of grade 4.6. All bolts are in one line.

Calculate strength of single bolt and no. of bolts to be provided in

the joint.

b) A strut 2.4 m long of a roof truss consists of a single angle 90 × 90 ×

6 mm. Calculate load carrying capacity if it is connected to 8 mm

thick gusset plate by welding.

Assume – Properties of ISA 90 × 90 × 6 mm ; fy = 250 N/mm2



Area = 1047 mm2, Cxx = Cyy = 2.42 mm rxx = ryy = 27.7 mm. rw = 17.5

mm

R / KL : 80 90 100 110 120 130

fcd (N/mm2) : 136 121 107 94.6 83.7 74.4.

c) Check whether ISMB 250 is suitable or not, as a simply supported

beam

over an effective span 6m. It carries a UDL of 15 kN/m including self

it.

Properties of ISMB 250

bf = 125 mm, tf = 12.5 mm tw = 6.9 mm

Ixx = 5131.6 × 104 mm4, Zxx = 410 × 103 mm3

r1 = 13.0 mm, Zp = 465.71 × 103 mm3

rmo = 1.1 Bb = 1 and fy = 250 MPa.


a) State types of bolted joints and types of failure in case of bolted

joints.

b) State two advantages of welded joints and two disadvantages of

bolted joints.

c) Draw sketches of Howe type and Pratt type truss showing pitch,

rise, panel point, panel, principal rafters and all members in one of

the above types.

d) State different types of loads and its combination considered

during design of roof truss. Explain in brief any one of them along

with its relevant IS Code.

e) Draw a neat sketch and label of an angle Purlin with principal

rafter at Panel

Point having root covering is A.C. sheets.


a) Define stanchion and column. Draw a neat sketch of any one

section used showing dimensions with usual notations.

b) Define Radius of gyration and Slenderness Ratio. Also state

maximum values of slenderness ratio for any two conditions of

compression member.

c) Explain „limits of width to thickness ratio to prevent buckling‟ for a

single angle strut, the limiting width to thickness ratio for a semi-

compact class

is 15.7∈. Check whether ISA 90 × 90 × 6 mm is of semi-compact class

or not. fy = 250 MPa.

d) Draw a neat labelled sketch of lacing system and state

requirements of Lacing to be used.




a) Draw sketches of three different modes of failure in case of

members subjected to Axial Tension.

b) Design a tie member using suitable equal angle sections to carry

a tensile factored load of 210 kN. The connection are with 20 mm

dia. bolts and 12 mm thick gusset plate. Design strength of 20 mm

dia. bolts = 45.3 kN. fy = 250 MPa, fu = 410 MPa, α = 0.8 sections

available

ISA .... mm Area .... mm2

90 × 90 × 8 1137

100 × 75 × 6 1014.0

125 × 75 × 6 1166.


a) A column ISMB 300 @ 46.1 Kg/m carries an axial load of 1200 kN.

Design a slab base and concrete Pedestal for the column. The SBC

of soil is 180 kN/m2.

M20 – concrete is used for concrete Pedestal.

For ISMB – 300 bf = 140 mm, tf = 13.1 mm, fy = 250 MPa, fu = 410 MPa

rmo =1.1. Draw a neat sketch as per designed details.

b) A industrial bldg. has Howe roof truss having 12 m span. Take A/C

sheet

covering Weighing 175 N/m2, eight Panel lengths along the tie

member, pitch of roof = 1/6 and weight of Purlin is 55 N/m2. Assume

self at of truss as 90 N/m2. Calculate Panel Point loads for dead and

live load.

c) Find the wind load per panel point for designing a roof truss of span 10

m and pitch as 1/4. The height of eaves is 5 m above ground. Assume Vb

= 4m/s ; probability factor K1 =1, size factor K2 = 0.8, topography factor K3

= 1 ; Normal Permeability.


a) Write steps to calculate the thickness of base plate used in slab base.

Why anchor bolts are used in slab base.

b) Differentiate between Laterally supported and unsupported beams

with a neat sketch.

c) Define Gusseted base. Also draw its labelled sketch showing all details.

d) How beam sections are classified for bending as per IS : 800 – 2007.

Describe any two of them.

e) A simply supported beam of 6 m span supports on R.C.C. slab where in

comp. flange is embedded. The beam is subjected to a dead load of 25

kN/m and super imposed load of 20 kN/m, over entire span. Calculate

plastic and elastic modulus required. Assume rf = 1.5, γ m = 1.1 fy = 250

N/mm2.



For Details contact:

Mr. V.S. kumbhar

HOD

Civil Department,

Sanjay Ghodawat Polytechnic, Atigre.

Mob. No.: 7798306363

Ph. No.: 0230 -246312

Email ID: [email protected]

mailto:[email protected]

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