Q.1Analyse the truss shown in Figure 1 and find the forces in the members.
Figure 1
(10)
Q.2(a)Find the principal moments of inertia Iuu and Ivv and the inclination of the principal axis with respect to x axis for the section shown in Figure 2.
Figure 2
(b)If the bar shown in Figure 3 is 3 m long with rectangular cross-section of 300 mm deep
400 mm wide, calculate the change in volume of the solid due to a longitudinal compressive force of 700 kN, if the elastic constants E and v for the material are known as 120 kN/mm2 and 0.2 respectively.
Figure 3
(5 + 5 = 10)
Q.3(a)Elastic moduli for the material namely Aluminium, Copper and Steel may be taken as
80 kN/mm2, 100 kN/mm2 and 200 kN/mm2 respectively. Calculate modular-ratios and equivalent area of composite section.
Figure 4
(b)In an experiment, Young’s modulus and rigidity modulus of a material have been determined as 110 GPa and 60 GPa respectively. Calculate the Poisson’s ratio and Bulk modulus of the material.
(6 + 4 = 10)
Q.4A machine component is made of a material whose ultimate strength in tension, compression and shear are 50 N/mm2, 100 N/mm2 and 60 N/mm2 respectively. At the critical point in the component the state of stress is represented by x = 30 N/mm2 and y = 75 N/mm2.
Find the maximum value of the shear stress xy which will cause failure of the component and also specify the mode of failure.
(10)
Q.5(a)A simply supported beam of length 8 m is subjected to a uniformly varying load from zero to centre to 3 t/m at both ends. Draw SFD and BMD.
(b)Draw the shear force and bending moment diagrams for 15 m span overhanging beam, which overhangs on both sides. It is subjected to udl of 6 kN/m on left side overhang portion of length 5 m and a udl of 4 kN/m on right side overhanging portion of length 4 m. Indicate the numerical values at all salient points.
(5 + 5 = 10)
Q.6(a)An I-section shown in Figure 5 is used as a beam. The beam is subjected to a bending moment of 3 kNm at its neutral axis. Find the maximum stress developed in the beam.
Figure 5
(b)A simply supported beam has a width of 100 mm and a depth of 120 mm. It is loaded with uniformly distributed load over the entire span of 3 m. If the permissible shear stress is 3 N/mm2, find the value of the uniformly distributed load on the beam.
(6 + 4 = 10)
Q.7(a)A short hollow cylindrical column carries a compressive force 50 kN. The external diameter of the column is 250 mm and the internal diameter is 120 mm. Find the maximum permissible eccentricity of the load, if the allowable stresses are 50 N/mm2 in compression and 25 N/mm2 in tension.
(b)A beam of rectangular section of 70 mm 100 mm carries a udl of 50 kN/m over a span of 3 m and an axial compressive force of 12 kN. Calculate
(i)maximum fibre stress, and
(ii)fibre stress at a point 0.50 m from the left end of the beam and 40 mm below the neutral axis.
Figure 6
(5 + 5 = 10)
Q.8Two shafts are of the same material, length and weight. One is solid and of 80 mm diameter, the other is hollow. If the hollow shaft is to store 25% more energy that the solid shaft when transmitting torque, what must be its internal and external diameters? Assume the same maximum shear stress in both the shafts.
(10)
Q.9(a)A solid aluminium shaft 120 cm long and of 5 cm diameters is to be replaced by a tubular steel shaft of the same length and the same outside diameter, i.e. 5 cm, such that each of the two shafts could have the same angle of twist per unit torsional moment over the total length. What must be inner diameter of the tubular steel? Modulus of rigidity of steel is three times that of aluminium.
(b)A cylinder shell, 0.8 m in diameter and 2.5 m long is having 10 mm wall thickness. If the shell is subjected to an internal pressure of 2.5 N/mm2, determine
(i)change in diameter,
(ii)change in length, and
(iii)change in volume.
Take E = 200 GPa and Poisson’s ratio = 0.25.
(5 + 5 = 10)
Q.10(a)A closed coiled helical spring of circular section has coils of 80 mm mean diameter. When loaded with an axial load of 300 kN, it is found to extend 160 mm and when subjected to a twisting couple at 3 Nm, there is an angular rotation of 60o. Determine the poisson’s ratio for the material.
(b)A composite spring has two close coiled helical springs connected in series, each spring has 10 coils at a mean diameter of 25 mm. Find the diameter of the wire in one of the springs if the diameter of the wire in the other spring is 2.5 mm and stiffness of the composite spring is 800 N/m.
Estimate the greatest load that can be carried by the composite spring for a maximum shearing stress of 180 MPa.
TakeG = 80 GPa.
(5 + 5 = 10)
Q.1Draw influence line diagrams for moment at E, reaction at D and shear at C in Figure 1.
Figure 1
Q.2Find out the maximum axial force in members DE and DF of the pin jointed truss shown in Figure 2, when a uniformly distributed load of 50 kN/m passes through the truss bridge longer than the span on the lower cord.
Figure 2
Q.3At what distance from the fixed end A in the beam shown in Figure 3 must hinge B be located so that the slope at B does not change.
Figure 3
Q.4For the overhang beam shown in Figure 4, determine the maximum deflection between the points B and C. E = 2 105 MPa; I = 50 10– 6 m4.
Figure 4
Q.5Analyse the rigid-jointed plane frame shown in Figure 5 using slope deflection method and draw the bending moment and shear force diagrams.
Figure 5
Q.6Analyse the plane frame shown in Figure 6 using moment distribution method and draw bending moment and shear force diagrams.
Figure 6
Q.7Analyse the prismatic beam shown in Figure 7 using three moment theorem and draw the bending moment diagram. The support B sinks by 5 mm. Take EI = 36 103 kNm2 as constant for beam.
Figure 7
Q.8Analyse the continuous beam shown in Figure 8 and draw the bending moment diagram.
Figure 8
Q.9Analyse the portal frame shown in Figure 9 using matrix method of analysis.
Figure 9
Q.10(a)Find the collapse load factor in terms of Mp for the frame shown in Figure 10(a).
Figure 10(a)
(b)Calculate the collapse load P for the beam shown in Figure 10(b) assuming the beam of constant section and plastic moment is Mp.
Figure 10(b)
Q.1Describe in brief the various types of building as classified by the NBO, 1983.
Q.2Determine the minimum area of a plot for three storied residential building having four flats of 160 m2 area in each floor for the given data :
(i)Area for staircase and access should not exceed 25% of the ground floor area of the building, and
(ii)FAR is to be restricted to 1.50.
Q.3A plot of land measures 30 ft. 60 ft. The front road is 20 ft. wide facing east. Service lane on the rear measure 10 ft. Prepare a suitable plan of a two bedroom residential building keeping in mind the restrictions imposed by local body of your city.
Q.4Give the classification under which the following buildings fall :
(i)Jail,
(ii)Dormitories,
(iii)Laundries,
(iv)Museums,
(v)Transit sheds,
(vi)Shops,
(vii)Banks,
(viii)Power Plants,
(ix)Theatre, and
(x)Store.
Q.5(a)Describe the minimum standards for Rural Housing suggested by NBO.
(b)Explain the major road-blocks in the way of feasible solutions to the Rural Housing.
Q.6(a)Briefly discuss the governing criteria to determine the depth of foundation at different levels in clayey soil.
(b)Describe the different functions served by walls in buildings.
Q.7Explain briefly the factors considered while deciding location of windows in a room. Normally, what percentage of area is provided for window opening.
Q.8A two flights stair is to be located for an office in a staircase hall measuring 4.50 m 6.0 m. The vertical distance between the floors is 4.0 m. Draw a dimensioned plan of an Open Wall Type Stair. Assume :
(i)Stair width= 1.5 m
(ii)Tread width= 0.27 m
(iii)Rise= 0.16 m
Q.9(a)Describe the components of oil based paints.
(b)Discuss the influence of orientation of a building on thermal comfort.
Q.10Write short notes on the following :
(i)Bearing Capacity of Soil
(ii)Water Proofing of Mud Walls
(iii)Determinants for Design of a Building
(iv)Thermal Insulation
Q.1(a)How does an Architect’s role differ from an Engineer in any building project? What is his approach towards designing a building? What kind of problems does he solve by his architectural design?
(b)Architecture is a synthesis of latest technological innovations and contemporary aesthetics. Discuss.
(c)“Form follows Function”. Who coined this term? Do you agree? Why/why not?
(4 + 3 + 3 = 10)
Q.2(a)List the elements that constitute our visual language. How do they affect your design?
(b)What principles govern a good design? Give an example of a building in which some of these principles have been employed.
(c)Explain “Colour” and “Texture” by comparing “Taj Mahal” with “MeenaxiTemple at Mahabalipuram”.
(4 + 2 + 4 = 10)
Q.3(a)Compare Greek period with Roman period with respect to the following :
(i)Architectural characteristics
(ii)System of construction
(iii)Building types
(iv)Orders
(b)Trace the development of church architecture from Early Christian period till the Baroque period. Give appropriate examples.
(5 + 5 = 10)
Q.4Write short notes on :
(i)Prehistoric Architecture
(ii)Pyramids
(iii)Development of Modern Architecture in India and its pioneers
(iv)Nagara or NorthernIndianTemple architecture
(v)Construction system in Islamic architecture in India.
(2 × 5 = 10)
Q.5(a)Discuss the contribution of the Corbusier in the development of aesthetics, functional aspects and construction system in modern design movement in Architecture.
(b)Explain the term “Anthropometry”. Why is it important to relate the size of built environment to human dimensions? Trace its development from ancient Greece upto the “modulor” by Le Corbusier.
(5 + 5 = 10)
Q.6(a)Select a building of your choice (your own house or a community building like school etc. nearby). Draw its proportionate sketch plan showing its dimensions and its actual furnishing. Identify the various activity-related spaces in that building and put them into the following categories :
(i)Primary function spaces
(ii)Supporting function spaces
(iii)Connecting or link spaces
Are they related to the size or space provided for them? Did you see any shortcomings? Evaluate the actual spatial requirements for the activities listed above. Mention the psychological dimension of the space inside this building of your choice. How will you improve it? What will you change?
(b)Mention the main stages in the development of design of an architect.
(c)What parameters determine climate of a particular place? How will you use these factors to classify different climatic zones? List the different climatic zones in India. Be brief.
(6 + 2 + 2 = 10)
Q.7(a)What is comfort? What conditions make for comfort inside a building? How does an architect ensure comfort inside a building?
(b)Write four lines each :
(i)Traps
(ii)Water supply system inside a building
(iii)Symbols for different electrical installations
(iv)Fire safety in a building
(v)Working principle of an Air Conditioning system.
(c)Write a short note on Energy Conservation in buildings.
(3 + 5 + 2 = 10)
Q.8(a)What are shell and pneumatic structures? Where would you use such a structure? And where will you put a space frame?
(b)Differentiate “Arch” and “Vault”.
(c)Briefly explain :
(i)Truss
(ii)Geodesic dome
(iii)Simple Rigid Frame
(d)Sketch a cable roof structure.
(3 + 2 + 3 + 2 = 10)
Q.9(a)Differentiate between shallow foundations and deep foundations.
(b)Differentiate between painting, varnishing and distempering.
(c)List some joints employed for frames and shutters of the doors and windows.
(d)What is the role of lintel in the superstructure? When will you use an Arch?
(e)Where will you suggest the following flooring type :
(i)Flag-stone flooring
(ii)PVC flooring
(iii)Glass flooring
(iv)Cork flooring.
(2 + 2 + 2 + 2 + 2 = 10)
Q.10(a)Where do we construct a cavity wall? How is a Hollow clay block masonry different from a Cavity Wall?
(b)Write short notes on :
(i)Duties and liabilities of an architect
(ii)Different types of tenders
(iii)Completion certificate.
(c)Compare Computer Aided Drawing with traditional drafting methods.
(2 + 6 + 2 = 10)
Q.1(a)Determine the self weight of a brick wall per running metre, considering its height to be
4 m when brick wall thickness is 230 mm and plaster of 12 mm on inner face while
25 mm on the outer face.
(b)Why do we need concrete cover over reinforcement? Mention the requirement for different member types.
(6 + 4 = 10)
Q.2(a)Draw a neat sketch of a square foundation of size 3.5 3.5 m for a rectangular column of size 900 300 mm considering sloping footing.
(b)State the advantages of Limit-state approach method.
(8 + 2 = 10)
Q.3Draw to a suitable scale a layout plan of a continuous beam of size 300 800 mm over three spans. The two-end spans being 8 m while central one is 4 m. Construction is monolithic with RCC slab 150 mm thick which is one way continuous in direction perpendicular to the beam. The slab 20 9 m is spanning over 4 beams equispaced at 3 m c/c and overhanging by
0.75 m on either side.
The slab is subjected to an imposed live load of 5 kN/m2. Assuming slab to be 150 mm thick, draw a neat detail of continuous slab.
Write a suitable schedule of reinforcement detail of the slab.
(10)
Q.4(a)Explain in brief notes :
(i)Form lining materials
(ii)Telescopic beam.
(b)Design the sheetings and beams for RCC flat slab 200 mm thick on 5 m 5 m module, height 4 m. Assume 25 mm planks are available.
(5 + 5 = 10)
Q.5(a)Determine the working moment of resistance (MR) in kNm units of ISMB 400 and
ISMC 400. Refer standard tables, in the IS handbook for structural engineers.
(b)How does built-up sections achieve economy?
(6 + 4 = 10)
Q.6Design the member and gusset plate connection for a tension member for a truss to carry an axial tension of 120 kN. Draw a neat sketch showing the connection.
(10)
Q.7(a)In how many different ways can one weld two structural member? Draw appropriate sketches to explain them.
(b)You are in a Fillet weld shop. You need to connect 2 angles (65 65 6) to carry
200 kN as shown in Figure 1.
Figure 1
(5 + 5 = 10)
Q.8(a)Draw a typical detail of a purlin supported on truss.
(b)Draw a detail of an open web girder at its end supported on steel column of I-section for a hinged connection.
(4 + 6 = 10)
Q.9(a)Calculate the number of twin mirror optic fluorescent fixtures with 40 w tubelights for an office area of 20 m 20 m with a floor to false ceiling height of 2.5 m. The required illumination is 300 lux. Use the following data :
C = coefficient of utilization for the room with spacing to height ratio of 1.3 is 0.7,
D = lamp derating factor is 0.90,
I = lumens per watt is 55,
M = maintenance factor is 0.80, and
B = mutual induction for two lamps in the same fittings is 0.92.
(b)Sketch and explain physical requirement for lifts in a building.
(5 + 5 = 10)
Q.10(a)Write short notes on :
(i)Principle of air conditioning.
(ii)Water chillers.
(b)Calculate solar and trans gain at 4 : 00 pm for the month of June in New Delhi. Inside design condition is 24oC DB and 50% RH. The wall under consideration is facing
south-west and is 3 m high and 10 m long, with 200 mm thick brick exposed on the exterior but interior plastered.
(4 + 6 = 10)
Q1.(a)Describe the steps adopted in preparing preliminary estimate.
(b)Discuss the various factors influencing the accuracy of estimate in building construction.
Q.2Draw (to scale) the plans (of all floors) and sections of soil mechanics lab of polytechnic from where you have received your diploma in Civil Engineering on a drawing sheet, and prepare an estimate of quantities of all the items concerning the structure.
Q.3(a)Explain the potential role of computers in quantity surveying and valuation.
(b)Explain the use of computer for “Estimation and Tender document preparation”.
Q.4(a)Discuss the role of specifications in awarding contracts.
(b)Discuss the detailed specifications of Lime Concrete in roof terracing.
Q.5Calculate the cost for 1 m3 of 1 : 2 : 4 RCC (1 cement : 2 coarse sand : 4 stone aggregate) work in beams.
Q.6(a)Explain the different methods of calculating depreciation in brief.
(b)Explain what do you mean by valuation of property and how does it differ from the cost.
Q.7A building costing Rs. 18,00,000 has been constructed on a free-hold land measuring 200 m2 recently in a big town. Prevailing rate of land in the neighbourhood is Rs. 500 per m2. Determine the gross rent of the property per month if and expenditure on all the outgoings including sinking fund is Rs. 60,000/- per annum.
Also assume net return :
(i)On building @ 8% on the cost of construction.
(ii)On land @ 5% on the cost of land.
Q.8(a)Briefly discuss the basic principles of Land Acquisition Act, 1984.
(b)Discuss briefly the significance of “Case laws” in valuation of a property.
Q.9Differentiate between the following :
(i)Scrap and salvage value.
(ii)Covered and carpet area.
(iii)Revised and supplementary estimate.
(iv)Cost of construction and compensation.
Q.10Write short notes on the following :
(i)Bills of quantities
(ii)Years purchase
(iii)Computerization of analysis of rates
(iv)Wealth tax
Q.1Give the basic chemistry of cement. What are different cement manufacturing processes? Describe one of them in detail. Give layout plan of cement manufacturing process. Discuss the water requirement of cement for hydration.
(2 + 1 + 2 + 2 + 3 = 10)
Q.2How the aggregates can be classified? Compare angular aggregate with round aggregates. How the surface texture of aggregates can be determined? What is the importance of surface texture of aggregates? Describe the mechanism of deterioration of concrete through
alkali-aggregate reaction stating aggregate alkali reaction. Which thermal properties of aggregate are important; and how?
(1 + 1 + 1 + 2 + + 2 + 3 = 10)
Q.3Whether the seawater can be used for mixing of concrete? If yes, state the situation where it can be used? What is the effect of seawater on strength of concrete? Explain the mechanism of increase in resistance of concrete to freezing and thawing due to use of admixture. How the use of admixtures affect on sand, water and cement content of concrete? What are accelerating admixtures and how they are used? Give a brief note on them.
(1 + 1 + 1 + 1 + 3 + 2 + 1 = 10)
Q.4State various workability tests and the factor/property measured by each of the test. What is segregation? Give the procedure of manufacturing of concrete? What is self-compacting concrete? What are the points to be observed in placing concrete? Define steam curing. Distinguish between ordinary pressure steam curing and high pressure steam curing. Why dry heat cannot be applied directly to the concrete to increase rate of hydration and accelerated setting? What is the effect of temperature on fresh concrete?
(1 + 1 + 1+ 1 + 1 + 1 + 2 + 1 + 1 = 10)
Q.5What is Abrahm’s Law? What is Gel space ratio? Calculate Gel/space ratio and theoretical strength of a sample of concrete made with 500 gm of cement with 0.5 water/cement ratio on full hydration and 60% hydration. Why there is difference between actual strength and theoretical strength? Discuss the crack propagation in concrete.
(1 + 1 + 4 + 4 = 10)
Q.6What is meant by durability of concrete? Why the use of calcium chloride is undesirable? Why permeability of concrete is not a simple function of its porosity? What measures should be taken to prevent adverse effect of seawater on reinforced concrete structures? Discuss the difference in the strength obtained from a cube test and standard cylinder test. Briefly describe two methods of analysis of fresh concrete.
(1 + 1 + 2 + 2 + 2 + 2 = 10)
Q.7Write the steps involved in Indian Standard Concrete Mix Design method, and design a concrete mix accordingly. The grade of concrete to be designed is M30, with degree of workability as 0.90 compaction factor; degree of quality control as Good, exposure as mild; and maximum size of aggregates 20 mm (angular). The fine aggregate confirms to grading zone III of IS 385. The 43 Gr cement is to be used.