微信客服：xiaoxionga100
微信客服：ITCS521
无代写-DESIGN 2
时间：2021-06-16
Continued overleaf
Page 1 of 6
University of Glasgow
STRUCTURAL DESIGN 2 (ENG2048)
Degrees of MEng, BEng, MSc and BSc in Engineering
Friday 11th December 2020
Release time: 09:30 (GMT) for 4 hours
This exam should take you: 2 hours to complete
However, you have a 4-hour window to download/complete/upload your submission
Attempt ANY FOUR questions.
Total 100 marks
The numbers in square brackets in the right-hand margin indicate the marks allotted to the
part of the question against which the mark is shown. These marks are for guidance only.
A calculator may be used. Show intermediate steps in calculations.
Candidates must use their OWN copies of Eurocode Extracts. Candidates will be
provided with a copy of the Structural Design Data Sheets.
Continued overleaf
Page 2 of 6
Q1 A reinforced concrete beam, C25/30 concrete for normal internal use, has a breadth
restriction of 225mm but no constraints on its depth. The beam is simply supported
over a span of 6.5m between column centres, and it needs to support un-factored
8kN/m dead load, in addition to its own self weight, and un-factored 12kN/m live
load.
(a) By considering the requirements of concrete durability and beam
serviceability, propose a suitable beam depth.
[5]
(b) Check the proposed section can satisfy bending design and determine the
corresponding reinforcement required. Use the EC2 “data for reinforced
concrete design” beam charts for initial estimates and then substantiate these
by using the design equations.
[10]
(c) Confirm that your chosen reinforcement fits within your beam
[2]
(d) Check your beam satisfies deflection criteria taking into account the
reinforcement you have designed. [5]
(e) If a reinforced concrete beam is described as perfectly ‘balanced’ it implies
that the concrete in compression and the steel in tension both fail
simultaneously for the same load. Comment on the design of your beam in
comparison to a ‘balanced’ beam. What could you change to make your beam
closer to ‘balanced’? [3]
Continued overleaf
Page 3 of 6
Q2 A reinforced concrete slab was previously designed for office loading but a new
developer would like to change the building use to retail.
The slab is currently 200mm overall depth, C25/30 concrete, and it spans, simply
supported in one direction for 5.5m between the centres of its supports. Investigations
have determined that the slab contains H12 – 150 reinforcement in the direction of its
span and only minimum reinforcement in the transverse direction. Cover to main
reinforcement is 25mm.
(a) Using the EC2 “Data for reinforced concrete design” slab charts, determine
the maximum moment of resistance for the existing slab. Check both the
maximum concrete and steel capacities separately and comment on your
findings. [3]
(b) From first principles, using clear diagrams, determine:
(i) The depth of the concrete stress block
[7]
(ii) The internal concrete and steel forces
[5]
(iii) The moment capacity of the slab
[5]
(c) The proposed new applied un-factored loads are 1.0kN/m2 dead load and
4.0kN/m2 live load. Is the existing slab sufficient for bending?
[5]
Continued overleaf
Page 4 of 6
Q3 The bottom 3.5m storey of a reinforced concrete column in a simple ‘pinned and
braced’ frame is to be square and constructed from C25/30 concrete. It is required to
support an un-factored characteristic dead load (including an allowance for self-
weight) of 300kN and an un-factored characteristic live load of 500kN.
(a) Using the EC2 ‘Data for reinforced concrete’ column chart, suggest a possible
concrete column size and rebar combination for this applied loading.
[4]
(b) Using the EC2 ‘Data for reinforced concrete’, ensure that your chosen column
section meets the EC2 ‘short’ classification.
[8]
(c) Using the EC2 ‘Data for reinforced concrete’ column equations, determine the
exact steel reinforcement requirement for the applied loading.
[5]
(d) Draw in detail, in plan, and in section, your reinforced concrete column design.
This should clearly illustrate the layout of the rebar, account for minimum rebar
requirements and column links.
[8]
Q4 A simply supported S275 steel roof truss spans 15m over a sports hall. The truss
tension members are 65x65x7mm single angles and the compression members are
70x70x7mm single angles. All connections are through 10mm gusset plates using
20mm bolts in 22mm holes.
(a) Using EC3 design equations, determine the tensile capacity of the angle ties.
[5]
(b) Using EC3 design equations, determine the compression capacity of the angle
struts, taking a 2m effective length between joints. [15]
(c) Assuming the tension member has a load equal to its maximum tensile
capacity, determine how many 20mm bolts are required to connect it to the
10mm gusset plate. [5]
Continued overleaf
Page 5 of 6
Q5 A fully restrained steel floor beam spans 8m, simply supported, between supporting
columns. The beam is carrying an unfactored dead load of 35kN/m and an unfactored
live load of 25kN/m. The small self-weight of the beam can be ignored in all
calculations.
(a) Select a suitable UB in S275 steel for bending and explain your choice
[5]
(b) Check that the chosen beam can satisfy the shear requirements
[5]
(c) Check that the chosen beam is adequate for deflection
[7]
(d) If the beam is to be connected to the supporting columns with short end plate
connections then the end plates must be welded to the beam in the fabrication
workshop.
(i) What is the minimum length of end plate required to ensure there is no beam-
web shear failure? [4]
(ii) Specify the weld required to connect the end plate to the beam assuming that
only the minimum length of end plate is used.
[4]
Q6 A simple shed is constructed with masonry walls and timber roof joists. The joists are
at standard 400mm centre to centre spacing and span 3m between the supporting
masonry walls. The joists are 63mm x 200mm timbers in C24 softwood. The wall
supporting the joists is 100mm thick, constructed from concrete block and 2.5m high.
(a) Determine the ultimate bending load that the joists can sustain. Assume the joist
is bending about its major axis and is loaded with a uniformly distributed load.
[10]
(b) Determine the ultimate maximum joist end reaction that the joists can sustain
based on an end bearing check.
[7]
The 100mm thick blockwork wall has been constructed from blocks with a
mean compressive strength, fb = 13N/mm
2 and a mortar with compressive
strength fm = 4N/mm
2
(c) Determine the ultimate design vertical resistance of the wall.
[8]
End of question paper
Page 6 of 6
学霸联盟
Page 1 of 6
University of Glasgow
STRUCTURAL DESIGN 2 (ENG2048)
Degrees of MEng, BEng, MSc and BSc in Engineering
Friday 11th December 2020
Release time: 09:30 (GMT) for 4 hours
This exam should take you: 2 hours to complete
However, you have a 4-hour window to download/complete/upload your submission
Attempt ANY FOUR questions.
Total 100 marks
The numbers in square brackets in the right-hand margin indicate the marks allotted to the
part of the question against which the mark is shown. These marks are for guidance only.
A calculator may be used. Show intermediate steps in calculations.
Candidates must use their OWN copies of Eurocode Extracts. Candidates will be
provided with a copy of the Structural Design Data Sheets.
Continued overleaf
Page 2 of 6
Q1 A reinforced concrete beam, C25/30 concrete for normal internal use, has a breadth
restriction of 225mm but no constraints on its depth. The beam is simply supported
over a span of 6.5m between column centres, and it needs to support un-factored
8kN/m dead load, in addition to its own self weight, and un-factored 12kN/m live
load.
(a) By considering the requirements of concrete durability and beam
serviceability, propose a suitable beam depth.
[5]
(b) Check the proposed section can satisfy bending design and determine the
corresponding reinforcement required. Use the EC2 “data for reinforced
concrete design” beam charts for initial estimates and then substantiate these
by using the design equations.
[10]
(c) Confirm that your chosen reinforcement fits within your beam
[2]
(d) Check your beam satisfies deflection criteria taking into account the
reinforcement you have designed. [5]
(e) If a reinforced concrete beam is described as perfectly ‘balanced’ it implies
that the concrete in compression and the steel in tension both fail
simultaneously for the same load. Comment on the design of your beam in
comparison to a ‘balanced’ beam. What could you change to make your beam
closer to ‘balanced’? [3]
Continued overleaf
Page 3 of 6
Q2 A reinforced concrete slab was previously designed for office loading but a new
developer would like to change the building use to retail.
The slab is currently 200mm overall depth, C25/30 concrete, and it spans, simply
supported in one direction for 5.5m between the centres of its supports. Investigations
have determined that the slab contains H12 – 150 reinforcement in the direction of its
span and only minimum reinforcement in the transverse direction. Cover to main
reinforcement is 25mm.
(a) Using the EC2 “Data for reinforced concrete design” slab charts, determine
the maximum moment of resistance for the existing slab. Check both the
maximum concrete and steel capacities separately and comment on your
findings. [3]
(b) From first principles, using clear diagrams, determine:
(i) The depth of the concrete stress block
[7]
(ii) The internal concrete and steel forces
[5]
(iii) The moment capacity of the slab
[5]
(c) The proposed new applied un-factored loads are 1.0kN/m2 dead load and
4.0kN/m2 live load. Is the existing slab sufficient for bending?
[5]
Continued overleaf
Page 4 of 6
Q3 The bottom 3.5m storey of a reinforced concrete column in a simple ‘pinned and
braced’ frame is to be square and constructed from C25/30 concrete. It is required to
support an un-factored characteristic dead load (including an allowance for self-
weight) of 300kN and an un-factored characteristic live load of 500kN.
(a) Using the EC2 ‘Data for reinforced concrete’ column chart, suggest a possible
concrete column size and rebar combination for this applied loading.
[4]
(b) Using the EC2 ‘Data for reinforced concrete’, ensure that your chosen column
section meets the EC2 ‘short’ classification.
[8]
(c) Using the EC2 ‘Data for reinforced concrete’ column equations, determine the
exact steel reinforcement requirement for the applied loading.
[5]
(d) Draw in detail, in plan, and in section, your reinforced concrete column design.
This should clearly illustrate the layout of the rebar, account for minimum rebar
requirements and column links.
[8]
Q4 A simply supported S275 steel roof truss spans 15m over a sports hall. The truss
tension members are 65x65x7mm single angles and the compression members are
70x70x7mm single angles. All connections are through 10mm gusset plates using
20mm bolts in 22mm holes.
(a) Using EC3 design equations, determine the tensile capacity of the angle ties.
[5]
(b) Using EC3 design equations, determine the compression capacity of the angle
struts, taking a 2m effective length between joints. [15]
(c) Assuming the tension member has a load equal to its maximum tensile
capacity, determine how many 20mm bolts are required to connect it to the
10mm gusset plate. [5]
Continued overleaf
Page 5 of 6
Q5 A fully restrained steel floor beam spans 8m, simply supported, between supporting
columns. The beam is carrying an unfactored dead load of 35kN/m and an unfactored
live load of 25kN/m. The small self-weight of the beam can be ignored in all
calculations.
(a) Select a suitable UB in S275 steel for bending and explain your choice
[5]
(b) Check that the chosen beam can satisfy the shear requirements
[5]
(c) Check that the chosen beam is adequate for deflection
[7]
(d) If the beam is to be connected to the supporting columns with short end plate
connections then the end plates must be welded to the beam in the fabrication
workshop.
(i) What is the minimum length of end plate required to ensure there is no beam-
web shear failure? [4]
(ii) Specify the weld required to connect the end plate to the beam assuming that
only the minimum length of end plate is used.
[4]
Q6 A simple shed is constructed with masonry walls and timber roof joists. The joists are
at standard 400mm centre to centre spacing and span 3m between the supporting
masonry walls. The joists are 63mm x 200mm timbers in C24 softwood. The wall
supporting the joists is 100mm thick, constructed from concrete block and 2.5m high.
(a) Determine the ultimate bending load that the joists can sustain. Assume the joist
is bending about its major axis and is loaded with a uniformly distributed load.
[10]
(b) Determine the ultimate maximum joist end reaction that the joists can sustain
based on an end bearing check.
[7]
The 100mm thick blockwork wall has been constructed from blocks with a
mean compressive strength, fb = 13N/mm
2 and a mortar with compressive
strength fm = 4N/mm
2
(c) Determine the ultimate design vertical resistance of the wall.
[8]
End of question paper
Page 6 of 6
学霸联盟
