Download AKTU B-Tech 5th Sem 2015-2016 Design Of Concrete Structures I Nce 505Ece 505 Question Paper

Download AKTU (Dr. A.P.J. Abdul Kalam Technical University (AKTU), formerly Uttar Pradesh Technical University (UPTU) B-Tech 5th Semester (Fifth Semester) 2015-2016 Design Of Concrete Structures I Nce 505Ece 505 Question Paper

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(Following Paper ID and Roll No. to be ?lled in your
[Time:3 hours]
12700
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N (?E505/ E(?ESOS
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560
Answer Book)
RollNO-IIIIIIIJIT
8. Tech.
(SEM. V) THEORY EXAMINATION, 2015-16
DESIGN OF CONCRETE STRUCTURES -1
[Maximum Marks:100|
Section -A
Attempt all parts. All parts carry equal marks. Write
answer ot?each part in short. (2x10=20)
(a) What is modular ratio ? Determine the modular
ratio atr M20 grade concrete.
(b) De?ne characteristics strength.
(c) De?ne limit state ofservieability.
(d) De?ne factor of safety and load factor.
(6) What do you mean by ?exural shear cracks '?
(f) Enumerate types of shear reinforcement with neat
sketch.
(1) P.T.O.
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(g) De?ne one way slab and two way slab.
(h)
Explain main stccel and distribution steel in slab.
(i) Enuntcrttte di t?l?erent 1) pcs ot?column.
0) Explain the codal provisions used in compression
members with helical reinforcement.
Section - B
: Attempt any ?ve qucstions from this section:
( 10x5 "50)
I?hc moment 01' rcsintuncc of rectangular reinforced
cuncrctc beam ot?breadth 'b? and effective depth ?d' cm
is ?0.9b.d". lt?the stress in the outside ?bre 0fc0ncretc
and in the steel do not cxccd 5 Nimm2 and [40 N/mmz
respectively. And the modular ratio equals 1 8. determine
the ratio of depth of the neutral axis from the outside
compression ?bre to the effective depth of the beam
and the ratio of area of tension steel to thc e??ectivc
area of the beam. I?hc beam is reinforced for tension
only.
'Design a reinforced concrete beam subjected to a BM.
onO KN-m. Use M20 concrete Fe 415 reinforcement.
Keep the width of the beam equal to halfthc effective
depth.
(2) NCESOS/ECESOS
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hat are the assumptions for the design of reinforce
concrete section for limit state ofcollapsc in bending '?
Derive the stress blck parameters for a rectangular cross
section.
Design a rectangular beam for an effective span 6m. The
superimposed load or live load 80 Kme and the size is
limited to 300mm width and 700mm overall depth. Use
M20 concrete mix and Fe 415 steel.
A.R.C. beam has an cffcctixc depth of 400 mmand
breadth 01?300 mm. It contains 3-25 mm Fe 500 grade
bars in tension. Determine the shear rcinibrccmcnt
needed for a factored 8.15. 0125.0 KN il?M30 mix is used.
Design a one W21} slab. with a clear span 0140 m. simply
supported on 230 mm thick masonary walls and
subjected to a loivc load 0f4 kN/m2 and a surface ?nish
ot'l kN,/m2.Assun1c M 15 mix and Fe 415 grade stccl.
Design a short axially loaded square column 500 x 500
mm for a working load of 2000 kN. U sc M20 concrete
and F e 415 grade steel.
'Design a circular column to carry an axial load of 1000
kN. Use M20 mix and Fe 415 grade steel
(3) P.T.O.
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Section - C
Note :Attempt? any two questions from this section:
( l5x2?-30)
10. Design the Torsional Reinforcement in a rectangular
bbcam section. 350 mm wide and 75.0 mm deep.
subjected to an ultimate twisting moment of I40 KNm.
combined with an ultimate BM of 200 KNm and an
ultimate SF of] 10 KN. Assume M25 concrete and F6415
grade ofsteel.
H
.?
l)esign a SS slab to cover a room ol?intcmal dimensions
0f4m x 6m & 230 mm thick brick walls all around. It
carries Iivc load of3 KN/m2 and ?oor ?nidh 0f] KN/
111?. Use M20 concrete and Fe 415 steel. Consider that
the slab comers are prevented from lifting.
12. A T?bcam ?oor consists of 150 mm thick R-C slab
monolithic with 300 mm wide beams. The beams are
spaced at 3.5m center to center and their effective span
is 6m. Ifthe superimposed loads on the salb is 5 KN/mz.
Design an intermediate T?beam. Use M20 mix and Fe
- 250 grade steel.
I 2700 (4) NCESOS/ECESOS
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