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