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WorksheetsCivil war-Day 28-PWD-Design of columns & footings
Total questions: 10
Worksheet time: 10mins
Name
Class
Date
1.
When a spirally reinforced short column is loaded axially, the concrete inside the core is subjected to
a)
Bending and compression
b)
Biaxial compression
c)
Triaxial compression
d)
Uniaxial compression
2.
A column cross-section 300 mm × 400 mm, 2250 mm long fixed at one end free at other end. The ratio of effective length to the least lateral dimension is
a)
7.5
b)
15
c)
11.25
d)
9
3.
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
4.
A reinforced concrete column of size 400 mm × 400 mm is having the diameter of the longitudinal bar as 20 mm. The pitch of lateral ties in such a case would be
a)
320 mm
b)
400 mm
c)
300 mm
d)
250 mm
5.
Clear cover for column of size 20 cm × 20 cm with 12 mm bars is
a)
40 mm
b)
20 mm
c)
25 mm
d)
30 mm
6.
The minimum size of the reinforcement bar in RCC column is
a)
6 mm
b)
8 mm
c)
10 mm
d)
12 mm
7.
What does the code (IS: 456 – 2000) recommend about the thickness at the edge of footing on soils?
a)
Should not be less than 300 mm
b)
Should not be less than 150 mm
c)
Should not be less than 250 mm
d)
Should not be less than 200 mm
8.
For footings, concrete sections of thickness greater than 1 m, the nominal reinforcement per metre length in each direction on each face shall be
a)
360 mm²
b)
380 mm²
c)
400 mm²
d)
420 mm²
9.
The limits of percentage p of the longitudinal reinforcement in a column is given by:
a)
0.15% to 2%
b)
0.8% to 4%
c)
0.8% to 6%
d)
0.8% to 8%
10.
The unsupported length between end restraints shall not exceed ______ times the least lateral dimension of a column.
a)
50
b)
60
c)
25
d)
75
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