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Seat No.: Enrolment
GUJARAT TECHNOLOGICAL UNIVERSITY
PDDC SEMESTER VIII- EXAMINATION SUMMER 2017
Subject Code: X80602 Date: 01/05/2017
Subject Name: Structural Design II
Time: 10.30AM to 01.00PM 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 456:2000, IS 875 (Part I to IS 13920, IS 3370 (Part I to SP-34 and SP-16 is allowed.
5. Use M-20 grade concrete and Fe-415 grade steel, if not mentioned.
Q.1

Estimate wind load on any intermediate frame of a multi storey building with following data:
Plan area 20m x 20m, Bay width in both direction 4m, Height of building 26m, Storey height 3m, Plinth height 1m, Height of parapet 1m, Location of Building Pune, Terrain Category Class Design life 100 years, Ground slope 1 vertical to 7 horizontal, Hill height 280m, Location from crest 100m windward.
14
Q.2

Draw neat sketch of ductile detailing of 'Beam Reinforcement' as per Indian Standard.
07

Explain importance with neat sketches of different types of retaining walls.
07
OR

Explain guidelines for preparation of structural layout of buildings.
07
Q.3

Fig. 1 shows typical floor plan of G+3 building. Find design axial load on column of ground floor for the following data:
Slab thickness 120mm, floor height 3.0m, parapet height 1m, floor finish load 0.75kN/m2, live load 1.5kN/m2, thickness of exterior walls 230mm, thickness of interior walls 150 mm and beam size 230mm x 450 mm.
14
OR
Q.3

Design and detail an isolated footing to support the column load of 1500kN. The size of column is 400mm x 600mm. SBC of soil is 180kN/m3. Use M25 and Fe415.
14
Q.4

Design and detail the walls of an under-ground rectangular water tank (for tank full condition only) with fixed base using IS3370 for the following data:
Tank dimensions 6m x 4m x 4m, Unit weight of soil 17 kN/m3, Angle of repose of soil 30o, Use M30 and Fe415.
14
OR
Q.4

Design and detail Top spherical dome Top ring beam Cylindrical wall; of an overhead circular water tank with flat bottom and supported on ring beam having water storage capacity of 3 lac liter. Use M30 and Fe415.
14
Q.5

A cantilever retaining wall has to retain 4m earth above ground level. Show the stability checks. Design and detail stem slab using following data:
Unit weight of soil 18kN/m3, SBC of soil 170kN/m2, Angle of repose of soil 30o, Coefficient of friction between soil and concrete 0.60.
14
OR
2
Q.5

Fix the preliminary dimensions of all components of a counter-fort type retaining wall to retain 7m earth above ground level. Show the stability checks. Design and detail stem slab using following data:
Unit weight of soil 18kN/m3, SBC of soil 170kN/m2, Angle of repose of soil 30o, Coefficient of friction between soil and concrete 0.60.
14

C
4m
4m
3m
3m
2.5m
2.5m
5m
Fig.