Sathyabama University 2008 B.Arch Architecture ,Analysis & Design of Structures - V - Question Paper

SATHYABAMA UNIVERSITY
(Established under part three of UGC Act, 1956)

Course & Branch: B.Arch
Title of the paper: Analysis & Design of Structures - V
Semester: VIII Max. Marks: 80
Sub.Code: 21801 (2003/2004) Time: three Hours
Date: 21-04-2008 Session: FN

PART – A (8 x four = 32)
ans ALL the ques.

1. With a neat sketch show how would you organize the standard bricks to find in English bond for one ½ brick pier.

2. Mention the principal factors which determine the depth of brick foundation.

3. Give any 4 practical examples of circular slabs.

4. Mention any 4 Indian code recommendations (IS: 456-2000) in the design of flat slabs.

5. State whether a 3 hinged arch is a statically determinate structure and substantiate your ans with proper explanation.

6. What do you mean by 'Loss of Prestress"? How will you compute the loss due to creep of concrete?

7. What are the different methods of Prestressing?

8. Explain about the structural action of shells.


PART – B (4 x 12 = 48)
ans ALL the ques.

9. Determine the allowable axial load per metre length of a
(a) 30 cm solid wall 4m high &
(b) 34 cm cavity wall with four cm wide cavity ranging from 20 cm & 10 cm leaves & 4.5 cm height. Wall may be presumed continuous longitudinally and having fixed-fixed condition along height.
(or)
10. A wall carries a load of 100 KN/m including its own weight. obtain a suitable width and depth of its foundation. Take ? = 90 KN/m2, ? = 16 KN/m3, ? = 30?. Also design a suitable part for the footing. presume the wall is 300 mm thick above plinth constructed in 200 mm x 100 mm x 100 mm bricks (nominal size).

11. A circular room has 5m diameter from inside. Design a circular roof slab for the room, to carry a superimposed load of 3800 N/mm2. presume that the slab is simply supported at the edges. Use M15 mix and Mild steel bars.
(or)
12. Design the roof slab for a circular room six metre in diameter form inside and carrying a super imposed load of five KN/m2. presume that the slab is restrained at the edges. Use M20 mix and Fe415 steel. The thickness of wall is 400 mm.

13. A 3 hinged parabolic arch shown in figure. Has a span of 20m and central rise of 5m. It carries a concentrated load of 80 KN at a distance of five metre from the left support. Determine the Maximum Bending Moment and plot the Bending Moment diagram.



(or)
14. Explain the various kinds of Losses in Pre-tensioning Systems.

15. A Rectangular concrete beam of cross part 30 cm deep and 20 cm wide is Prestressed by means of 15 wires of five mm diameter located 605cm from the bottom of the beam and three wires if diameter 5mm, 2.5cm from the top. Assuming the prestress in the steel as 840 N/mm2,calculate the stresses at the extreme fibres of the mid span part when the beam is supporting its own weight over a span of 6m. If a uniformly distributed live load of 6KN/m is imposed, evaluate the maximum working stress in concrete. The density of concrete is 24 KN/m3.
(or)
16. Describe in brief about the Classification of Shells.

Earning:   Approval pending.