Applied Mechanical Department
Govt. Poly. Valsad
Design Of Concrete Structures (Civil Vth Sem)
Design Examples
1)
An RCC column carries a
characteristic load of 1600 KN. The allowable bearing pressure on soil is
180KN/m
2
. Design the column and design an
isolated foo
ting for the same column. The
materials are m
20
grade concrete and HYSD reinforcement of grade Fe
415
for both, the column
and the footing.
Type Of Footing
Type Of Column
Batch 1
Isolated Pad F
ooting
Square C
olumn
Batch 2
Isolated Slopped Fo
oting
Square C
olumn
2)
S/S One way Slab
.
A simply supported one way slab of a corridor of an office building of a clear span 2
.
4m is
supported on beam of 230mm
width. Design the slab for a liv
e load of 5kn/m
2
. The materials
are M
20
grade concrete an
d
HYSD reinforcement of grade Fe
415
. Draw detailed sketch + all the
checks are required.
3)
Two Way slab with corners not held down.
A drawing room of resident
ial bu
ilding measures 4.3m X 6.55m. I
t is supported on 350mm thick
walls on all four sides. The
slab is simply supported at ed
ges with no provision to resist
t
orsi
o
n at
corners.
Design
the
slab using grade M
20
concrete and HYSD reinforcement of grade Fe
415.
Show
all the checks and draw detailed sketch.
4)
Two Way slab with corners held down.
Design th
e slab for the principal’s office of college building 3.6m
X 4.8m
. The slab is resting on
4010mm thick wall and ends are prevented from lifting the slab. Live load is 3kn/m
2
. Use
M
20
concrete mix and Fe
415
steel.
5)
One way Continuous Slab.
Design a
one
-
way
continuous slab for a
office building
for three equal span of 3.2m from the
following data.
i.
Live load = 4Kn/m
2
ii.
Floor Finish = 1Kn/m
2
iii.
Concrete M
20
,
Steel Fe
415.
6)
Sketch the reinforcement.
Details across a typical cross
-
section of a waist slab along
with the landing slab
of a single fight
star.
Simply
supported at both ends from following data.
i.
Rise 150mm and Trade 250mm
ii.
Waist slab 140mm thick
iii.
Main reinforcement 12mm diameter at 150mm C/C
iv.
Distribution steel 8mm diameter at 200mm C/C
v.
Going 2.5m and
landing 1m
vi.
Assume all other required data
.
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