No. of Printed Pages: 7 IBCE-032(S) I
DIPLOMA IN CIVIL ENGINEERING DeLE I
ADVANCED LEVEL CERTIFICATE COURSE IN
CIVIL ENGINEERING (DCLEVI/ACCLEVI)

Term-End Examination

December, 2016
BCE-032(S) THEORY OF STRUCTURES
Time: 2 hours Maximum Marks: 70
Note: Question number 1 is compulsory. Attempt any four questions from the remaining. In total, five questions are to be attempted. Assume suitable data wherever necessary. Use of calculator is permitted.


1. Choose the most appropriate answer from the given alternatives in each case:

If the nominal diameter of a rivet is 27 mm, then the gross diameter of the rivet hole will be

27 mm

28.5 mm

25 mm

29 mm

The slope and deflection at various points in a beam subjected to bending moment are

independent functions

directly proportional to bending moment

interdependent functions

None of the above

The maximum permissible eccentricity of load for no tension at the base of a masonry wall having a base width is

B/6

B/3

B/4

B/2

The strength of a riveted joint is equal to the

shearing strength ofthe rivets

bearing strength of the rivets

tearing strength of plate

Least and

The pitch of a roof truss is given by

Rise/Span

Span/Rise

2*Rise/Span

Rise/2*Span

When two plates are placed end to end and are joined using a cover plate on one side, the joint is known as

Lap joint

Flap joint

Single cover butt joint

Double cover butt joint

The maximum bending moment in a purlin of a roof truss may be taken as

WL /12

WL /10

WL

WL

2. Draw the influence line diagram for bending moment at point P of the simply supported beam AB as shown in Figure 1. Using this diagram, find the maximum bending moment at P due to two connected wheel loads of 10 kN each, 3 m apart and moving from A to B. 14


<img src='./qimages/4652-43.jpg'>

3. State the two Moment-Area theorems. 6

A fixed beam AB of span 10 m carries a point load of 10 kN at 3 m from the end B. Using Moment-Area theorem, analyse the beam and draw the shear force and bending moment diagrams. 8


4. Using moment distribution method, analyse the portal frame shown in Figure 2 and draw the bending moment diagram. The moments of inertia are shown within circles.

<img src='./qimages/4652-43.jpg'>


5 Describe the assumptions made in the design of riveted joints. 6

Design a riveted connection for an angle ISA60 x 40 x connected by the longer leg to a gusset plate 6 nun thick. using 16 nun dia power-driven shop rivets and carrying a tensile force of45 kN. Maximum permissible stresses in the power-driven shop rivets are 8

Shear 100 MPa

Bearing on rivet 300 MPa


6. A column is made up of an ISHB 350 72.4 kg/m with two flange plates 400 x 10 mm section each, as shown in Figure . Find the total load carrying capacity of the column, if the effective length of the column is 4.5 m. Take fy=250 MPa.

<img src='./qimages/4652-43.jpg'>

Properties of ISHB 350

92.21cm2

Ixx =19802.8 cm4

Iyy =2510.5 cm4

For f=250 MPa

X 40 50 60
0ac 139 132 122

7. Describe the two stability criteria of retaining walls. 7

Describe different types of loads that are considered for the design of a roof truss. 7