1
Seat No.: Enrolment
GUJARAT TECHNOLOGICAL UNIVERSITY
PDDC SEMESTER-VIII EXAMINATION WINTER 2018
Subject Code:X80602 Date: 15/11/2018
Subject Name: Structural Design-II
Time: 02:30 PM TO 05:00 PM Total Marks: 70
Instructions:
1.Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
4. Use of IS:456, IS:875, IS:1893, IS:13920, IS:3370, SP:16 and SP:34 are permitted.
5. Use M20 grade concrete and Fe415 grade steel if not mentioned
Q.1

Determine wind force on any intermediate frame of a multistorey building . Plot the wind pressure distribution diagram along the height of the building and hence nodal forces at each forces at each floor level. Use the following data:
Length of building= 48 width of building Height of building storey height=3m, Frame spacing=4m in both direction, Location =Chennai,=Terrain category=2, Slope of ground=100,Height of hill= 900m, Location of crest=200m wind ward, design life period=55 years.
14
Q.2

Explain different types of load to be consider while structural design as per Indian Standards.
07

Explain various types of retaining walls.
07
OR

Explain importance of weep holes and shear key in retaining walls.
07
Q.3

Draw neat ductile detailing sketch for beam column joint and footing as per codal provision.
07

Explain Limit state method and working stress method in detail.
07
OR
Q.3

Design a rectangular R.C.C water tank of 6m×3m with a maximum depth of 2.50m of water .The tank rest on brick masonry walls all around use M20 concrete and Fe 415 grade of steel.
14
Q.4

Design an over head tank circular water tank with flat bottom and supported on ring beam with the following data: Capacity of the tank 4.5 lacs litre M25 grade concrete and Fe 415 steel. Design the following components:(1) Top spherical dome, Top ring beam Cylindrical wall,(4). Base slab,(5). Bottom ring beam.
14
OR
Q.4

Design a suitable cantilever type retaining wall to retain 4 m soil above ground level. The unit weight of backfill, angle of internal friction, coefficient of friction and soil bearing capacity are 18 kN/m3, 0.55 and 150 kPa respectively . Use M20 concrete and Fe 415 grade of steel. Surcharge pressure 15 kN/m2
14
2
Q.5

Design and detail stem and toe of counterfort retaining wall to retain 7.0 m height of earth above ground level using following data.
Angle of repose 30°
Unit weight of earth material 16 kN/m3
S.B.C. of earth 150 kPa
Coefficient of friction between the base and soil 0.60
Use M20 concrete and Fe 415 steel
14
OR
Q.5

Prepare a typical structural lay out for G+3 storey building having 5 bays of 5 m in X direction and 5 bays of 4 m in Y-direction. Design a two way slab at a typical floor. Floor height 3.35 floor finish load 1 kN/m2 and live load 3 kN/m2. All exterior walls are of 230 mm thick and interior wall of 115 mm thick. Assume beam size of 230 mm X 450 mm. Draw neat sketch of reinforcement detailing.
14