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WorksheetsCivil war-Day 26-LSGD-RCC columns& Retaining walls
Total questions: 10
Worksheet time: 10mins
Name
Class
Date
1.
The minimum clear cover required for column is
a)
25 mm
b)
15 mm
c)
40 mm
d)
50 mm
2.
How many vertical bars (minimum number) are provided for circular column ?
a)
4
b)
6
c)
8
d)
10
3.
The minimum thickness of longitudinal bars in a RCC column
a)
8 mm
b)
10 mm
c)
16 mm
d)
12 mm
4.
The unsupported length between end restraints shall not exceed ______ times the least lateral dimension of a column.
a)
45
b)
60
c)
75
d)
90
5.
Spacing of longitudinal bars measured along the periphery of the column shall not exceed
a)
200 mm
b)
250 mm
c)
300 mm
d)
350 mm
6.
Lateral ties in RC columns are provided to resist
a)
bending moment
b)
shear
c)
lateral bending of longitudinal steel bars
d)
both A and B
7.
Minimum number of bars required for a rectangular column section
a)
3
b)
4
c)
5
d)
6
8.
The point where total horizontal thrust of backfill acts is called -
a)
Centre of gravity
b)
Point of contraflexure
c)
Centre of pressure
d)
Shear key point
9.
For cantilever retaining walls, the most economical height range is -
a)
< 2 m
b)
3-8 m
c)
8-15 m
d)
> 20 m
10.
A counterfort wall becomes economical for wall heights generally above -
a)
3 m
b)
5 m
c)
8 m
d)
15 m
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