GTU Civil Engineering (Semester 7)
Structural Design - 1
May 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 Design a RCC simply supported beam of length of 5 m for flexure and shear. The beam is subjected to UDL of 40 kN/m including self-weight. Perform development length check and deflection check. Draw reinforcement detail, by longitudinal section and cross section.
14 M

2 (a) Write the design steps for the RC combined footing.
7 M
2 (b) Draw neat and clean figures for beam to beam connection and beam to column connection in steel design.
7 M
2 (c) Design the bolted connection to transmit an axial force equals to the strength of the plate. Here two plates of size 200 × 12 mm of grade 410 are to be connected by 22 mm diameter bolt by using butt joint.
7 M

3 (a) Find the tensile strength of an angle section ISA 120 × 80 × 8 mm connected by the gusset plate by 5 mm weld at toe and back.
10 M
3 (b) Write in short ?Lug angle?.
4 M
3 (c) Compute the compressive strength of an angle section ISA 90 × 90 × 8 mm. The angle is loaded by one angle when it is connected by two bolts at each end.
10 M
3 (d) Explain the failure modes of steel section column.
4 M

4 (a) Design double lacing system, when a build up column two ISMB 450 at back-to- back spacing 230 mm subjected to an axial force 1400 kN. Assume the length of column is 8 m and both ends of column are not restrained. Draw necessary Sketches.
14 M
4 (b) Design a laterally restrained compression flange simply supported beam of span 5 m subjected to working loads. Where DL = 10 kN/m and LL= 7 kN/m.
14 M

5 (a) Explain the needs of drops and column heads in flat slab construction with necessary sketches.
7 M
5 (b) Design a square RCC column subjected to an factored axial force of 1000 kN. Draw necessary sketches.
7 M
5 (c) Design a slab of size 3 m x 7 m is resting on wall of 230 mm thick. Assume LL = 3 kN/m2. Perform check for cracking and defection only.
7 M
5 (d) Explain one way shear check and two way shear check for footing design.
7 M



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