RCC and PSC MODEL QUESTION PAPER CIVIL DIPLOMA 5TH SEMESTER
Format of Model Question
Paper for CIE(Tests)
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Test/Date and
Time |
Semester/year |
Course/Course
Code |
Max Marks |
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Ex: I Test/6 th week of sem
10-11 Am |
Sem : V SEM |
Course : RCC
and PSC |
20 |
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Year :
2016-17 |
Course
code:15CE51T |
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Name of Course coordinator : Course outcome :CO1, CO2 Note:
Answer all questions |
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Q No |
Question |
M |
CL |
CO |
PO |
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1 |
List the basic assumption of
design for limit state of collapse in flexure. |
3 |
R |
1 |
1, 2 |
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2 |
Differentiate between under
reinforced section and balanced section(Limiting section) |
4 |
U |
1 |
1, 2 |
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3 |
An RCC
rectangular beam of size 230X600mm overall is to carry a super imposed load
of 40KN/m over an effective span of 6m. Find the area of tension and
compression reinforcement. Use M20 & Fe500 steel. Take effective cover
40mm on both sides. OR Find
the ultimate moment of a T-beam from the following sectional properties. Use
M15 & Fe415 steel. å
Width of flange = 1500mm å
Thickness of flange = 100mm å
Overall depth of beam = 600mm å
Width of rib or web = 300mm å Ast = 2455mm2 å
Effective cover = 40mm |
6 |
U/ A y |
1 |
1, 2, 4, 5, 7 |
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4 |
Design
a singly reinforced beam of clear span 6m to support a working live load of
15KN/m. Use M20 & Fe500 steel. Sketch the reinforcement details. OR Design
a cantilever beam of clear span 3.5m to support a working live load of
15KN/m. Use M20 & Fe500 steel. Sketch the reinforcement details. |
7 |
U/ A p |
2 |
1, 2, 6, 7 |
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Guidelines to the paper
setter |
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Part-A :
Answer any 5 questions. Each question carries 5 marks. Part-B : Answer any 5
questions, two questions from each section. Each question carries 15 marks. Part-A : Q1, Q2, Q3, Q4, Q5 are
based on RCC theory. Q6, Q7, Q8 are based on PSC. Part-B : Section-I : Q9, Q10, Q11 based on analysis of SR, DR
and T-beams. Section-II : Q12 based on design of SR beam or DR beam Q13 based on design of Lintel or One way
slab or Staircase. Q14 based on design of One
way continuous slab or Two way unrestrained or Two way restrained. Q15 based
on design of Columns or design of column by using SP 16 charts or design of
column Footing. |
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Unit
1-Introduction: |
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Cognitive level –Remember |
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ÿ
Explain briefly limit state method of
designing RC structures. ÿ
List the basic assumption of design for limit
state of collapse in flexure. ÿ
Explain characteristic strength,
characteristic load and partial safety factor. ÿ
What are serviceability requirements satisfied
by designing an RC structures? ÿ
Explain the concept of shear in beams and
mention its types. ÿ
What is meant by development length and
mention the codal provisions ? ÿ
What is meant by curtailment of tension
reinforcement ? ÿ
Write a short note on cracking in structural
concrete members. ÿ
Write the effective flange width of an
intermediate T-beam and an isolated T-beam. ÿ
Explain yield line theory concept in slabs. ÿ Define
the terms: One way slab, Restrained two way slab, Unrestrained two
way slab, Cantilever
slab, Continuous slab, Flat slab. ÿ
Define the terms: Axially loaded,
Eccentrically loaded column. ÿ
Define the terms: Positive reinforcement,
negative reinforcement, shear reinforcement, torsional reinforcement, lateral reinforcement, side face reinforcement. |
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Cognitive level –Understand |
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ÿ
Define Neutral axis, Limiting neutral axis,
moment of resistance, Lever arm, Effective
depth. ÿ
Differentiate between under reinforced section
and balanced section(Limiting section). ÿ
Differentiate between analysis and design of
an RC structure. ÿ
List the different types of shear failure and
how it is prevented. ÿ
What are the factors which affects short term
and long term deflection ? ÿ
Distinguish between singly reinforced and
doubly reinforced sections. ÿ
List the conditions under which doubly reinforced
beams are preferred. ÿ
What are the advantages of a T-beam over a
rectangular beam. ÿ
Distinguish between T-beam and L-beam. ÿ
Distinguish between a beam and a Lintel. ÿ Differentiate
between one way slab and two way slab. ÿ
Mention the section at which Max span moment,
support moment, shear force occurs in case
of a continuous slab or a beam. ÿ
Under what conditions a slab is designed as
two way. ÿ
Differentiate between short column and long column. ÿ
What are the points to be considered while
designing long columns? ÿ
Differentiate between uniaxial bending and
bi-axial bending. |
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Cognitive level –Analysis |
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Unit
2- Design of Beams |
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Cognitive level –Application |
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Design of Singly reinforced Beams Given – Clear
span, bearing, super imposed UDL, end condition(SS & cantilever), grade
of concrete or Exposure condition of concrete, grade of steel. To find – Design the beam for flexure and
shear. Check for deflection. Typical Problem: ÿ
Design a singly reinforced beam of clear span
6m to support a working live load of 15KN/m. Use M20 & Fe500 steel.
Sketch the reinforcement details. ÿ
Design a cantilever beam of clear span 3.5m to
support a working live load of 15KN/m. Use M20 & Fe500 steel. Sketch the
reinforcement details. Design of
Doubly reinforced Beams Given – Clear
span, bearing, super imposed UDL, Size of beam, effective cover on both
sides, grade of concrete or Exposure condition of concrete, grade of steel. To find – Design
the beam for flexure (Find Ast and Asc) Typical
Problem: ÿ Design a simply
supported beam of effective span
8m is subjected to an UDL
of 35KN/m. Size of the
beam is restricted to 300X700mm with
an effective cover
of 50mm. Use
M20 & Fe500 steel.
Sketch the reinforcement details. |
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Unit
3- Design of Slabs |
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Cognitive level –Application |
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Design of One way Slab Typical Problem: ÿ
A room has clear dimension 7mX3m. The live
load on the slab is 3KN/m2 and floor finish load of 1KN/m2 using M20 grade concrete and
Fe 415 steel. The slab is supported on 230mm thick wall. Design of One way continuous Slab Typical Problem: ÿ Design
a one way continuous two span slab of effective span 4.5m each. The live load
on the slab is 3KN/m2 and a floor finish(imposed dead
load) of 1.5KN/m2. Use M20 grade concrete and Fe 500 grade steel. ÿ Design
a continuous slab for an office floor. The slab is continuous over beams
spaced at 4m c/c. It carries an imposed dead load
of 1 kN/m2and a live load of 4kN/m2. Assume width of
rib as 230mm. Use M20 grade concrete and Fe415 steel. (Design the slab for
the maximum moment which occurs at support next to the end support). Take l/d
ratio as 30 and sketch the
reinforcement details. Design of Two way slab (Corners are not held
down) Typical Problem: ÿ
Design a slab over a room of internal
dimensions 4mX5m supported on 230mm thick
brick wall having a live load of 2KN/m2,
floor finish 1KN/m2. All the edges are simply supported (The
corners are free to lift). Take M20 concrete and Fe415 steel. Sketch the reinforcement |
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details. ÿ
A slab over a room is 5mX5m. The edges of the slab is simply supported on all
the sides and corners are not held down. The live
load on the slab is 3KN/m2, the slab has a bearing of 230mm on the
supporting walls. Assume exposure condition to environment can be classified
as mild. Grade of steel Fe415,
design the slab. Design of Two way slab (Corners are held down) Typical Problem: ÿ Design
a slab over a room of internal dimensions 4mX5m supported on 230mm thick brick
wall all the edges are simply supported (the corners of the slab is
held down). Live load on slab 3KN/m2, floor finish 1KN/m2.
Take M20 concrete and Fe415 steel. Sketch the reinforcement details. |
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Unit
4- Design of Column and Footings |
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Cognitive level –Application |
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Design of Axially loaded short Column Type 1 : Given - Size of column, Asc, grade of concrete & steel To
find – Ultimate and Working load. Typical Problem: ÿ A reinforced concrete short square column of size 300mm
is reinforced with
4 bars of
20mmɸ. Find the
ultimate load capacity of the column using M20 & Fe415 steel. What will
be the allowable service load? Type 2 : Given – Working
axial load, shape of the column, grade of concrete & steel, assume Asc=0.8 to 6% To find
– Size of column and Asc Typical Problem: ÿ Design
an RCC rectangular short column to resist an axial load of 800KN. Use M20 concrete and Fe415 steel. Assume 0.8% steel of column area. Type 3 : Given – Size
and shape of column, axial working load, effective length, grade of concrete
& steel To
find – Asc and Percentage of
steel Typical Problem: ÿ
Design necessary reinforcement for an RCC
column of size 400X600mm to carry an axial
working load of 2000KN. The effective length of the column is 3m. Use
M20 & Fe415 steel. ÿ Design
a circular column of diameter 450mm subjected to a load of 1200 KN. The
column is having lateral ties. The column is 3m long and is effectively held
in position at both ends but not restrained against rotation. Use M25
concrete and Fe415 steel. Design of uniaxial short Column ÿ
Determine the reinforcement to be provided
in a
square column subjected to uniaxial bending
with the following data : å
Size of the column = 450X450mm å
Grade of concrete = M25 å
Grade of steel = 500N/mm2 å
Factored load = 2500kN å
Factored moment = 150kN-m å
Arrangement of reinforcement = On two sides. Assume 25mm bars with
40mm cover. ÿ Design
the column from the following details using SP 16 charts. å
Size of column = 300X450mm å Pu=1200KN å
Assume d’=50mm å
Mu=150kN-m å
Use M25 and Fe415 steel. Provide reinforcement
distributed equally on two sides. Design of
Isolated Footing (Sqaure& Rectangle) Given - Size of column, Column load, SBC, grade
of concrete & steel To find – Design the size of footing, depth of footing
, Ast, check for One way
& Two way shear. Typical Problem: ÿ
Design a square footing to carry a column load
of 1100KN from a 400X400mm column. The SBC of the soil is 100KN/m2.
Use M20 & Fe415 steel. ÿ
Design a rectangular footing for a column of
size 300X500mm supporting an axial factored
load irectoraotfe1O50f0TKeNch. SnBicCaloEf sdouilc2a0ti0oKnN/m2. Use M20
& Fe415 steel. Karnataka State |
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Unit
5- Design of Staircase & Lintels |
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Cognitive level –Application |
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Design of Staircase |
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Typical Problem: |
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ÿ The main stair
of an office
building has to be located
in a hall measuring 3.3mX5.5m. The |
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vertical distance between the floor is 3.6m.
Design the stairs. The LL on the stair is 4KN/m2. |
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Use M20 grade concrete and Fe415 steel. |
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Design of
Lintels |
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Typical Problem: |
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ÿ Design a lintel using the following data: |
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å |
Width of opening = 2.4m |
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å |
Height of brick wall above lintel = 4m |
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å |
Thickness of wall = 230mm |
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å |
Bearing = 230mm |
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å |
Grade of concrete = M20 |
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å |
Grade of steel = Fe415, |
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å |
Density of brick wall = 19.2KN/m3 |
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Check for flexure and shear. Sketch the
reinforcement details. |
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ÿ Design
a lintel using the following data : |
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å |
Width of opening = 2.4m |
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å |
Height of brick wall above lintel = 1.5m |
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å |
Thickness of wall = 230mm |
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å |
Grade of concrete = M20 |
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å |
Grade of steel = Fe415, |
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å |
Density of brick wall = 19.2KN/m3 |
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Check for flexure and shear. Sketch the
reinforcement details. |
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Unit
6- Pre-Stressed Concrete |
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Cognitive level –Remember |
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ÿ |
Explain the principle of prestressing. |
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ÿ |
What are the advantages and disadvantages of
prestressing? |
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ÿ |
Explain the grades of concrete and steel used
in PSC. |
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ÿ |
Mention the systems of pre-stress and its
losses. |
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Cognitive level –Understand |
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ÿ |
Distinguish between RCC and PSC. |
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ÿ |
Difference between pre-tensioned and
post-tensioned members. |
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ÿ |
Under what circumstances PSC members are
preferred. |
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