1
Seat No.: Enrolment
GUJARAT TECHNOLOGICAL UNIVERSITY
BA SEMESTER-VI EXAMINATION WINTER 2018
Subject Code:1065004 Date:03/12/2018
Subject Name:Structure VI
Time:02:30 PM TO 04:30 PM Total Marks: 50
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
4. Use of IS 456(2000) IS -3370 is permitted
Q.1

Sketch the deflection profile and reinforcements details of cantilever retaining wall.
05

Draw typical bending pattern, shear force and bending moment diagram for combined rectangular footing. And also locate the critical section.
05

Design effective depth of a rectangular footing for two columns A and B carrying loads of 600 kN and 800 kN respectively. Column A is 300 mm X 300 mm and column B is 400 mm X 400 mm in size. The centre to centre spacing of the columns is 3.5 m. The SBC of soil is 180 N/mm2. Use M 20 concrete and Fe 415 grade steel
10
Q.2

Write various forces acting on retaining wall with sketch and describe active earth pressure by Rankine Theory for Dry or moist backfill with no surcharge and Submerged backfill
06

Explain the stability condition for cantilever retaining wall with diagram for Stability against overturning Stability against sliding and Maximum pressure at base and no tension at base
06

Write down the steps to calculate retaining wall.
08
OR
Q.2
Fix the basic preliminary dimensions of various components including stem of a cantilever retaining wall to retain the earth of height 7 m above lower ground level and carry out stability checks. Also design the stem and do the structural detailing. Take SBC of soil 210 kN/m2 Ø 300 0.5, Unit weight of soil 15 kN /m3 . Use M 20 grade of concrete and Fe-415 grade.
20
Q.3

Fix the basic dimension and design the top dome of Intze type container elevate water tank to store 3 lakh litre water. Draw the Sketch. If the height of container is 15 meter, Wind load 2 kN/ m2 Soil Bearing Capacity of 200 kN/ m2. M20 Fe 415 grade of steel.
10