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Subject Code: 141301
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GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER-IV (OLD) EXAMINATION - WINTER 2018
Subject Name: Design Of Environmental Structure
Time: 02:30 PM TO 05:00 PM Date: 28/11/2018
Total Marks: 70
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Instructions:
- Attempt all questions.
- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
- Draw neat and clean figures, whenever required.
- Use of IS 456, IS 800 and IS 875 Part I, II and III are permitted.
- For RCC design M20 grade of concrete and Fe 415 grade of steel is used and for steel design Fe 250 grade of steel is used until otherwise stated
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Q.1 (a) Elaborate the basic concept of pre tensioning and post tensioning. 07
(b) Draw neat figures beam to beam connection and beam to column connection for steel structures. 07
Q.2 (a) Elaborate the codal provision of lacing. 07
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(b) Elaborate the design steps of beam for flexure as per IS code provisions. 07
OR
(b) Enlist the design steps of slab base for a column. 07
Q.3 The tie of a roof truss carries an axial tension of 220 kN. Design the section of the member and also the connection of the member with suitable assumptions. 14
OR
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Q.3 Design a circular short RCC column to carry an axial working load of 1620 kN. Design the column using lateral tie as well as helical reinforcement. 14
Q.4 (a) Distinguish under-reinforced and over-reinforced design. Why the under reinforced design is preferred? 07
(b) Explain the design steps of one way simply supported slab. 07
OR
Q.4 Design a steel column to carry an axial load of 1520 kN. Select suitable section and assume necessary data if required. 14
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Q.5 Design a square slope footing short RCC column to carry an axial working load of 1800 kN. 14
OR
Q.5 (a) Enlist the design steps of shear design of RCC beam. 07
(b) Explain the serviceability criteria for the RC beam using IS code. 07
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