Adobe Scan May 11, 2024
Adobe Scan May 11, 2024
Adobe Scan May 11, 2024
PART -B
a.. What are the different flexural failure modes
Explain with neat sketches. observed in prestressed concrete beams?
(08 Marks)
Subje
T
10CVi4
b. A post-tensioncd prestressed Tee beam having aflange width of 1200mm and flange
thickness of 200mm, thickness of web being 300mm is prestressed by 2000mm of high
tensile steel, located at an efletive depth of 1600mm. If f = 40 N/mm and
,- 1600N/mm, estimate the f ural strength of the unbonded Tee section, assuming
span/depth ratio as 20 and fpe 10 N/mm'. (12 Marks)
6 a. Distinguish between web shear, fle xural-shear cracks in concrete beam with sketches.
b. A prestressed concrete beam, span (05 Marks)
1Om of rectangular Section, 120mm wide and 300mm
deep. is prestressed by force of 180 kN. The
of 5kN/m which includes self weight ofbeam supports a total uniformly distributed load
the member. Compare the magnitude of the
principal tension developed in the eam, for the following cases.
(i) with axial prestress
(ii) without axial prestress
(ii) with parabolic cable having max cccentricity of
the supports. 100mm at the centre of span and zero at
(1S Marks)
Scheme &Solutions
Subject
QuestioaTitle Deign g prubasKed Cnutt shs Subject Code: (Dey14
:
Nemher Soluon Marks
Allocated
3 I
60000 - 0
3 shus due 02
- -0 2
Shidog (34, S- - 02
30. 00|- 02-.
Retaem
Toty los 271.75 mm
Puctge loss 02
Number
Question
Subject
5b 4a
Title
:
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TndeRiExplain Dagacim dusliiona
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netial with PART B
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u Subject
Code :
in 323
te
2
32 03 O2 02 AllocatedMans
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Number
Question
Subject
Case () Title:
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Code :
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Code:
tte
Aloczted
Marky
2+4 15
Dah PsC Subject Code: 10CV76
Sabject Tek: Markx
Questien Solution
Allocatec
Namber
2
foye in wire
Av Shels 7.25~/m
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nx 20
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2
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2
3
+
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P 74. 16 kN