Bangalore University 2005-2nd Sem B.E First/ , /ch -Elements of Civil Engg - Question Paper
'23 Page No... 3
First/Second Semester B E Degree Examination, February/March 2005
iirks)
for
irks)
'IIS.
rts)
rks)
ing
Common to all Branches except Architecture
Elements of Civil Engineering
Time: 3 hrs.j IMax.Marks : 100
Note: 1. Answer any FIVE full questions.
2. AH questions carry equal marks.
3. Missing data,- if any, may be suitably assumed.
; 4 Answer must be specific and precise.
5. Draw neat sketches wherever necessary.
What are the requirements of a good building stone?
(6 Marks)
(b) What are the tests to be conducted on bricks to find their suitability for the construction Work? (6 Marks)
(c) i) What are the properties of good cement mortar? Give its uses.
il) What fs meant by R.C.C? What are its advantages? (a Marks)
II
2. (a) What is surveying? Write fn brief the basic principles of surveying. {6 Marks)
ks)
nd
c
te.
ks)
ne
ks;
ct
is
(b) What is remote sensing? What are its applications? (6 Marks)
' (c) Brief the desirable properties of good timber. What are the uses of timber?
(8 Marks)
3. (a) Name the alternate building materials and give their uses,
(6 Marks) (6 Marks)
(b) List the composite materials and mention their uses.
(c) Explain briefly the role of a civil engineer in the development of a country.
(S Marks)
4. (a) Distinguish between :
i) Composition and resolution of forces
ii) Rigid body and deformable body. re Marks)
se
fcs)
/fb) Find the resultant of coplanar con-current force system shown in fig. 1.
[6 Marks)
(c) A rigid plate ABCD is subjected to forces on shown in fig.2. Compute the magnitude, direction and line of action -of the resultant of the system with reference to the point A. (8 Marks)
5. T Stale the conditions of equilibrium for coplanar con-current and non-concurrent
m.
force systems. (6 Marks)
(b) State and prove Varignons theorem.
(6 Marks)
(c) A beam ABCDEF is hinged at A and supported on rollers at E and carries ' loads as shown in fig-3. Determine the reactions at supports. (8 Marks)
L
100 KN
*
.f
y
S 0
\s>
farks)
' the larks)
larks)
farks)
larks)
m in
larks)
farks)
J7n
|
.6C | |||||||||||
|
300 Ka?
10 I
o,0
apt*-*
x.
A
A~ B | fc ** P jdfiar .
J J 7fl fJ 70 J TQ >-j<- J'Stci j
larks)
ce Of plied
|
~7T f |  |
06
K-
]J700
?5arks)
0
4-CO
120
->
V'
200
i
fl<j}-4- djmewicvt
sn tr> trim
JOOOK
%oc
Ft $.5
e
V
\
\ X1 s\ go
FlGt-C ** * **
Page No... 2 J :: CIV 13/23
i) Centre or gravity
ii) Moment or inertia
iii) Radius of gyration. (6 Marks)
fb)' Locate the ctnlroSd oi a sun: uircie <v::h "to horizoni..-;; d;:jneler by the
method of integration. ,,,..... (6 Marks)
(c) Locate the centroid of shaded area shown in fig.4.... (s Marks)
7. (a) State and prove parallel axis theorem. (5 Marks)
(b) State and prove perpendicular axis theorem. (5 Marks)
(c) Find the moment of inertia of a pre-stressed concrete beam section shown in fig.5 about horizontal and vertical axes passing through the centroid.
(10 Marks)
8. (a) State the laws of dry friction. (4 Marks)
(b) Define :
i) Coefficient of friction
ii) Angle of friction
iii) Cone of friction. (6 Marks)
(cj A small block of weight 1000N is placed on a 30 Incline with a coefficience or friction at 0.25 on shown in fig.6. Determine the horizontal force lo be applied for
i) the impending motion down the plane, and
ii) the impending motion up the plane. (io lacrks)
Contti ... 3
|
Attachment: |
| Earning: Approval pending. |
