Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2019 Summer 6th Sem New 2160607 Elementary Structural Design Previous Question Paper
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ?VI(NEW) ? EXAMINATION ? SUMMER 2019
Subject Code:2160607 Date:21/05/2019
Subject Name:Elementary Structural Design
Time:10:30 AM TO 01:30 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:800 and steel table is permitted.
5. Assume M20 grade concrete and Fe415 steel for RCC element and fy of 250 MPa and
fu of 410 MPa for the structural steel if not given.
MARKS
Q.1 (a) Discuss the suitability of steel as reinforcement material. 03
(b) Why are drilled holes preferred over punched holes? When
Punched holes are allowed?
04
(c) Explain different methods of designing R.C.C structures. 07
Q.2 (a) Draw detailed stress and strain diagrams for singly under-
reinforced section & Over reinforced section.
03
(b) What are the values of factor of safety for concrete and steel?
Why do we use less factor of safety for steel as compared to
concrete?
04
(c) A R.C beam of rectangular section 230 mm wide and 600 mm
deep is reinforced on tension side by 4 bars of 20 mm diameter.
The characteristic strength of concrete and steel used are 25
N/mm
2
and 500 N/mm
2
. Take nominal cover 20 mm. Calculate
a) Ultimate moment of resistance of the section b) Determine the
maximum uniformly distributed load a simply supported beam
of this section can carry over a span of 6m.
07
OR
(c) A reinforced concrete slab 150 mm thick is reinforced with 10
mm bars @ 180 mm c/c. the reinforcement is located at an
effective depth of 125 mm from top. Calculate the moment of
resistance of the section. Use M-20 concrete and Fe 415 steel.
07
Q.3 (a) Explain the difference between one way and two way slab. 03
(b) Find the ultimate load carrying capacity and allowable load for
a short column of size 500 mm * 500 mm. the column is
reinforced with 4-25 mm diameter bars. Use M20 concrete and
HYSD grade Fe 415 steel. Assume emin < 0.05D.
04
(c) A Simply supported beam 300 mm * 600 mm (effective) is
reinforced with 5 bars of 25 mm diameter. It carries a uniformly
distributed load of 80 kN/m (Including self-weight) over an
effective span of 6m. Out of 5 main bars, two bars can be bentup
safely near the supports. Design the shear reinforcement for the
beam. Use M20 grade of concrete and Fe 415 steel.
07
OR
Q.3 (a) What is the function of providing distribution steel in slab? 03
(b) Write design steps for isolated rectangular column footing. 04
(c) Determine the ultimate moment of resistance of the tee beam
having the following properties: -
1. Width of flange = 900 mm
2. Thickness of Flange = 150 mm
07
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Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ?VI(NEW) ? EXAMINATION ? SUMMER 2019
Subject Code:2160607 Date:21/05/2019
Subject Name:Elementary Structural Design
Time:10:30 AM TO 01:30 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:800 and steel table is permitted.
5. Assume M20 grade concrete and Fe415 steel for RCC element and fy of 250 MPa and
fu of 410 MPa for the structural steel if not given.
MARKS
Q.1 (a) Discuss the suitability of steel as reinforcement material. 03
(b) Why are drilled holes preferred over punched holes? When
Punched holes are allowed?
04
(c) Explain different methods of designing R.C.C structures. 07
Q.2 (a) Draw detailed stress and strain diagrams for singly under-
reinforced section & Over reinforced section.
03
(b) What are the values of factor of safety for concrete and steel?
Why do we use less factor of safety for steel as compared to
concrete?
04
(c) A R.C beam of rectangular section 230 mm wide and 600 mm
deep is reinforced on tension side by 4 bars of 20 mm diameter.
The characteristic strength of concrete and steel used are 25
N/mm
2
and 500 N/mm
2
. Take nominal cover 20 mm. Calculate
a) Ultimate moment of resistance of the section b) Determine the
maximum uniformly distributed load a simply supported beam
of this section can carry over a span of 6m.
07
OR
(c) A reinforced concrete slab 150 mm thick is reinforced with 10
mm bars @ 180 mm c/c. the reinforcement is located at an
effective depth of 125 mm from top. Calculate the moment of
resistance of the section. Use M-20 concrete and Fe 415 steel.
07
Q.3 (a) Explain the difference between one way and two way slab. 03
(b) Find the ultimate load carrying capacity and allowable load for
a short column of size 500 mm * 500 mm. the column is
reinforced with 4-25 mm diameter bars. Use M20 concrete and
HYSD grade Fe 415 steel. Assume emin < 0.05D.
04
(c) A Simply supported beam 300 mm * 600 mm (effective) is
reinforced with 5 bars of 25 mm diameter. It carries a uniformly
distributed load of 80 kN/m (Including self-weight) over an
effective span of 6m. Out of 5 main bars, two bars can be bentup
safely near the supports. Design the shear reinforcement for the
beam. Use M20 grade of concrete and Fe 415 steel.
07
OR
Q.3 (a) What is the function of providing distribution steel in slab? 03
(b) Write design steps for isolated rectangular column footing. 04
(c) Determine the ultimate moment of resistance of the tee beam
having the following properties: -
1. Width of flange = 900 mm
2. Thickness of Flange = 150 mm
07
2
3. Width of rib = 300 mm
4. Effective depth = 600 mm
5. Area of tension reinforcement = 3966 mm
2
Use M-20 Grade of Concrete and Fe-415 HYSD bars.
Q.4 (a) Describe failure modes of steel beam. 03
(b) Write short notes on block shear failure in plates and angles. 04
(c) Select a suitable angle section to carry a factored tensile force of
290 kN assuming a single row of M20 bolts and assuming design
strength fy = 250 N/mm2
07
OR
Q.4 (a) How can the effects of shear lag be considered in the design
calculation?
03
(b) Discuss cross section classification. 04
(c) Two plates of thickness 12 mm and 10 mm are to be jointed by
a groove or butt weld as shown in fig.1 The joint is subjected to
a factored tensile force of 300 kN. Assuming an effective length
of 150mm, Check the safety of joint for single groove weld joint
and double V groove weld joint. Assume Fe410 grate steel plate
and welds are shop welded.
07
Q.5 (a) Write design steps of lacing column. 03
(b) Draw a neat sketch of gusseted steel footing. 04
(c) Design simply supported beam of span 3.5 m subjected to a
factored bending moment of 300 kNm and factored shear of 140
kN. The beam is laterally unsupported. Steel grade of Fe 410.
07
OR
Q.5 (a) Write design steps of battening column. 03
(b) Compare welded joint vs bolted joints. 04
(c) A beam of ISMB550 has simple support span of 9m and is
laterally supported at center only. Calculate the maximum all
inclusive factored udl it can support.
07
Figure -1
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This post was last modified on 20 February 2020