B.E-B.E 1st Year Basic Civil Engineering & Engineering Mechanics(Rajiv Gandhi Proudyogiki Vishwavidyalaya, Bhopal-2014)

BE - 204
B.E. I & II Semester Examination, June 2014
Basic Civil Engineering & Engineering Mechanics

Time : Three Hours                                                                               Maximum Marks : 70

Note : i) Answer five questions. In each question part A, B, C is compulsory and D part has internal
choice.

ii) All parts of each question are to be attempted at one place.

iii) All questions carry equal marks, out of which part A and B (Max. 50 words) carry 2 marks,

part C (Max. 100 words) carry 3 marks, part D (Max. 400 words) carry 7 marks.

iv) Except numericals, Derivation, Design and Drawing etc.

1. a) What do you mean by M-30 concrete? Explain. 2
b) Enumerate and describe the tests which may be performed in field to assess the quality of
bricks. 2
c) What do you mean by workability of the concrete? Explain about the various factors
affecting it. 3
d) What are the objectives for providing foundation in the building? Draw a neat sketch of RCC
circular column footing with details of column and pedestal. 7
OR
Mention the various factors considered while choosing location of stair in a building. Draw
neat sketch of Dog-legged stair showing various components of the stair. 7
2. a) What do you mean by transit and non transit theodolite? 2
b) What are the various fundamental lines in a theodolites / level and what is the desired relation
amongst them? 2
c) Prove that the curvature and refraction errors are eliminated in reciprocal leveling. 3
d) Following consecutive readings were taken on a continuously sloping ground at regular interval
of 30m. Find the gradient joining first and last point (using 3m leveling staff) 1.370m, 2.055m,
2.760m, 0.455m, 1.110m, 1.875m, 2.57m, 0.305m, 0.995m, 1.685m. Enter the above readings
in a page of field and level book. Deduce RL of intermediate points using H.I. method. 7
OR
Explain how plotting can be done by plate table surveying using method of traversing. Mention
step by step procedure. 7
3. a) Explain the factors on which contour interval depends? 2
b) Draw contours of ridge and a valley line assigning suitable values to the contour shown in the
figure (in your answer). 2[2]
BE-204 PTO
fig.2.
fig.1.
c) Write an explanatory note on applications of remote sensing. 3
d) A Rectangular Plot abcd forms the plane of a pit for borrowing Earth from it e is point of
intersection of the diagonals. Calculate Volume of excavation using following data. 7
Point. a b c d e
Original levels(m) 45.2 49.8 51.2 47.2 52.0
Final levels(m) 38.6 39.8 42.6 40.8 42.5
Provided Length ab = 50m bc = 80m
OR
Explain How contour maps can be used to draw cross sectioning and to find out capacity of a
reservoir. 7
4. a) State and explain theorem of varignon. 2
b) Show how a force acting on a body can be replaced by an equivalent force couple system. 2
c) How determinacy and stability of a frame can be ascertained. 3
d) Determine axial forces in the members CF,FD,DG,GE and EB of Simply supported
loaded truss as shown in fig.1. 7
OR
A Prismatic bar of length 2.1m and weight 365N rests with in a hemispherical bowl of radius
0.7m as shown in Fig.2. Determine angle α for position of equilibrium.
7[3]
BE-204 PTO
5. a) What do you mean by polar moment of inertia? 2
b) What are the various of types of supports of a beam? 2
c) What do you understand by second moment of area and radius of Gyration? Explain. 3
d) Determine the centroid of the sector of the circle using two different approaches. (Fig.3)
7
OR
Draw the shear force and bending moment diagram for beam or shown in Fig.4 7
*******
fig.3.
fig.4.