VTU Civil Engineering (Semester 3)
Building Materials & Construction Technology
June 2015
Total marks: --
Total time: --
INSTRUCTIONS
(1) Assume appropriate data and state your reasons
(2) Marks are given to the right of every question
(3) Draw neat diagrams wherever necessary


1 (a) Explain various types of shallow foundations.
5 M
1 (b) What is subsoil exploration? Explain any one method.
5 M
1 (c) Design a strip footing for a brick wall 230 mm thick, and 3.2 m high above ground level. The wall carries a superimposed load of 100kN per metre run. The soil has unit weight of 18 kN/m3, angle of repose 30°, SBC of 180 kN/m2 and modulus of rupture of 480 kN/m2. Take unit weight of brick masonry as 19.5 kN/m3.
10 M

2 (a) Explain with sketches various types of closer bricks.
5 M
2 (b) Sketch plans of consecutive two layers of English bond for one and half brick thick wall. Also show the elevation of wall.
10 M
2 (c) Explain with a neat sketch Ashlar chamfered stone masonry.
5 M

3 (a) Explain with neat sketch, various types of Lintels.
10 M
3 (b) What are the advantages of arch over a lintel?
5 M
3 (c) What are the loads coming over a lintel and how they are estimated?
5 M

4 (a) Sketch a Queen post truss made of timber, which has to support tile roofing. Name the components of the truss and nature of force in them.
8 M
4 (b) Explain the requirements of a good floor.
6 M
4 (c) Explain with a neat sketch flat slab flooring.
6 M

5 (a) Draw a neat sketch of a wooden door with shutter, name the parts.
8 M
5 (b) Write notes on: i) Revolving door, ii) Collapsible door, iii) Rolling shutter.
12 M

6 (a) Briefly explain the requirements of a good stair.
5 M
6 (b) Write a note on different types of stairs.
5 M
6 (c) Plan a stair case for a residential building in which the room for the staircase is 3m×4.5m and height between floor finishes is 3.30m. Draw neat sketches.
10 M

7 (a) What are the objects of plastering and pointing?
6 M
7 (b) Explain different types of plaster finishes.
6 M
7 (c) Describe types of paints available in market and their specific usage.
8 M

Write short note on:
8 (a) Types of glasses.
5 M
8 (b) Use of plastics in buildings.
5 M
8 (c) Formworks.
5 M
8 (d) Damp proofing in building.
5 M



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