Q2. As shown in Fig. Q2, a simply supported beam with overhang over the support B is supposed to support the characteristic permanent load G = 75 kN/m (including the self weight) and the characteristic live load Q = 55 kN/m. The beam is connected to two adjacent slabs (in the transverse direction), and the beam and the connecting slabs were constructed monolithically. The beams are spaced in the transverse direction at 3.0 m centres with a slab thickness h support has a width of 420 mm. 160 mm. Each Assume C30/35 concrete, Grade 500 steel, b = 325 mm, d = 550 mm, and h = 725 mm. If the compressive reinforcement is needed, it can be assumed that d' = 75 mm (for both sagging and hogging). (a) Identify the load case which can result in the maximum sagging moment at the mid-span of the span AB. (b) Based on the result obtained from Q2(a), design the bending reinforcement for the maximum sagging moment at the mid-span of the span AB. Draw a cross-sectional view for showing the location of the designed bending reinforcement. (c) Identify the load case which can result in the maximum hogging moment at the support B. (d) Based on the result obtained from Q2(c), design the bending reinforcement for the maximum hogging moment at the support B. Draw a cross-sectional view for showing the location of the designed bending reinforcement.
Q2. As shown in Fig. Q2, a simply supported beam with overhang over the support B is supposed to support the characteristic permanent load G = 75 kN/m (including the self weight) and the characteristic live load Q = 55 kN/m. The beam is connected to two adjacent slabs (in the transverse direction), and the beam and the connecting slabs were constructed monolithically. The beams are spaced in the transverse direction at 3.0 m centres with a slab thickness h support has a width of 420 mm. 160 mm. Each Assume C30/35 concrete, Grade 500 steel, b = 325 mm, d = 550 mm, and h = 725 mm. If the compressive reinforcement is needed, it can be assumed that d' = 75 mm (for both sagging and hogging). (a) Identify the load case which can result in the maximum sagging moment at the mid-span of the span AB. (b) Based on the result obtained from Q2(a), design the bending reinforcement for the maximum sagging moment at the mid-span of the span AB. Draw a cross-sectional view for showing the location of the designed bending reinforcement. (c) Identify the load case which can result in the maximum hogging moment at the support B. (d) Based on the result obtained from Q2(c), design the bending reinforcement for the maximum hogging moment at the support B. Draw a cross-sectional view for showing the location of the designed bending reinforcement.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:A
6.0 m
В
Fig. Q2
2.5 m
с
Transcribed Image Text:Q2.
As shown in Fig. Q2, a simply supported beam with overhang over the
support B is supposed to support the characteristic permanent load G = 75 kN/m
(including the self weight) and the characteristic live load Q = 55 kN/m. The beam
is connected to two adjacent slabs (in the transverse direction), and the beam and the
connecting slabs were constructed monolithically. The beams are spaced in the
transverse direction at 3.0 m centres with a slab thickness h
support has a width of 420 mm.
160 mm. Each
Assume C30/35 concrete, Grade 500 steel, b = 325 mm, d = 550 mm, and h = 725
mm. If the compressive reinforcement is needed, it can be assumed that d' = 75 mm
(for both sagging and hogging).
(a)
Identify the load case which can result in the maximum sagging moment
at the mid-span of the span AB.
(b)
Based on the result obtained from Q2(a), design the bending reinforcement
for the maximum sagging moment at the mid-span of the span AB. Draw a
cross-sectional view for showing the location of the designed bending
reinforcement.
(c)
Identify the load case which can result in the maximum hogging moment
at the support B.
(d)
Based on the result obtained from Q2(c), design the bending reinforcement
for the maximum hogging moment at the support B. Draw a cross-sectional view
for showing the location of the designed bending reinforcement.
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