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WorksheetsCivil war-Day 24-LSGD-RCC BASICS
Total questions: 10
Worksheet time: 10mins
Name
Class
Date
1.
Under water concreting is done at a temperature of :
a)
2°C
b)
3°C
c)
4°C
d)
5°C
2.
How much yield stress does a twisted bar have more than an ordinary mild steel bar?
a)
50%
b)
10%
c)
20%
d)
30%
3.
Diameter of mild steel bars is expressed in
a)
mm
b)
cm
c)
cm2
d)
None
4.
The unit weight of steel for RCC
a)
1000 kg
b)
7850 kg
c)
785 kg
d)
1001 kg
5.
Which is the maximum size of coarse aggregate for a mix of M20 concrete ?
a)
40 mm
b)
20 mm
c)
12.5 mm
d)
10 mm
6.
A reinforced concrete beam is assumed to be made of
a)
homogeneous material
b)
heterogeneous material
c)
isotropic material
d)
none of the above
7.
The concrete as per BIS 456 – 1978 is designated in ______ grades namely M15, M20 etc.
a)
8
b)
5
c)
6
d)
7
8.
What is the yield strength of HYSD bars ?
a)
250 N/mm2
b)
140 N/mm2
c)
415 N/mm2
d)
230 N/mm2
9.
Plain mild steel have a yield point of ....... N/mm2
a)
140
b)
250
c)
415
d)
515
10.
Grades of concrete for RCC shall not be less than :
a)
M10
b)
M15
c)
M20
d)
M7.5
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