Universiti Tun Hussein Onn Malaysia: Confidential
Universiti Tun Hussein Onn Malaysia: Confidential
Universiti Tun Hussein Onn Malaysia: Confidential
FINAL EXAMINATION
SEMESTER II
SESSION2016/2017
CONFIDENTIAL
CONFIDENTIAL BFC32102
SECTION A
Q1 (a) Concrete structures which have been properly designed and constructed are long
lasting and required little maintenance. Identify FIVE (5) factors that influence the
durability of concrete structures.
(5 marks)
(b) Draw and briefly explain the parabolic curve for stress strain relationship of the
concrete and reinforcing steel.
(6 marks)
(c) Limit state design of an engineering structure must ensure that the structures are safe
for worst loading and during normal working condition. The deformation of the
members will not detract the appearance, durability or performance of the structure.
Describe THREE (3) design methods based on factor of safety that have been used
over many years.
(9 marks)
Q2 (a) Reinforced concrete structures that exposed to sea water will failed due to
deterioration and corrosion. Explain TWO (2) prevention approaches in the design
to avoid these problems.
(4 marks)
(b) A two-span beam, as shown in Figure Q2, has dimension of 250 mm x 450 mm and
non-direct long term interaction with sea water. The preliminary design of the beam
indicates that there is a necessary requirement to utilize Asreq = 1513 mm2 of steel
reinforcement at spans AB and BC. The beam also subjected to hogging moment of
146 kNm at support B. Given the following data: Agg = 25mm, MEd < Mbal and Qk =
0.32Gk.
(i) Propose the suitable nominal cover of the beam. Use fire resistance, R = 120
and diameter link, Ølink = 8 mm.
(5 marks)
(ii) Check the clear distance, maximum diameter and maximum spacing of steel
reinforcement provided in the design that should comply with the crack
control.
(6 marks)
(iii) Draw the complete detailing of the beam. Consider that the beam requires
singly reinforcement and maximum lever arm.
(5 marks)
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CONFIDENTIAL BFC32102
SECTION B
Q3 (a) Determine the ultimate moment resistance of the T-beam section shown in Figure
Q3(a). Given fyk = 500 N/mm2 and fck = 25 N/mm2.
(15 marks)
(b) The beam in Figure 3(b) spanning 8.0 m on 300 mm wide supports. It is required to
support a uniformly distributed ultimate load, wu of 200 kN/m. The characteristic
material strength are fck = 30 N/mm2 for the concrete and fyk = 500 N/mm2 for the
steel. Check if the shear reinforcement in the form of the vertical links shown can
support the shear under the given ultimate load.
(15 marks)
Q4 A T-section beam has a web breadth, bw =350 mm and overall depth, h = 650 mm
with equal span of 6 m as shown in Figure Q4. The transverse direction spacing, b
are specified as 4 m and slab thickness, hf = 180 mm. The uniformly distributed
ultimate design load, wu = 200 kN/m. The characteristic strength of concrete and
steel used are 30 N/mm2 and 460 N/mm2 respectively.
(i) Draw the bending moment diagram (BMD) and shear force diagram (SFD) of
the continuous beam.
(5 marks)
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CONFIDENTIAL BFC32102
(b) Figure Q5 shows part of the first floor layout plan of a double storey
residential building. The concrete for slabs and beams are poured together and the
thickness of the slab is 150 mm. The information for all slabs are as follows:
(i) Determine the positive and negative moments for BEDROOM 2 slab.
(5 marks)
(iii) Design the flexural reinforcement required at mid span. Assume bar size is 10
mm.
(9 marks)
(iv) Draw the cross section of the slab in X – X view to show the reinforcement.
(3 marks)
END OF QUESTIONS
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CONFIDENTIAL BFC32102
FINAL EXAMINATION
Qk = 0.32Gk
A B C
3000mm 4000mm
450mm
250mm
FIGURE Q2
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FINAL EXAMINATION
0.567fck
bf = 450
Fcf
hf = 150
s = 0.8x
Fcw
neutral axis
d = 550
As = 2592
Fst
bw = 300
Stress Block
Section
*All units in mm
FIGURE Q3(a)
H12
*All units in mm
FIGURE Q3(b)
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FINAL EXAMINATION
B C
D
A
6m 6m 6m
beff
FIGURE Q4
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CONFIDENTIAL BFC32102
FINAL EXAMINATION
*All units in mm
FIGURE Q5
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