1
GATE CE 2005
MCQ (Single Correct Answer)
+2
-0.6
A rectangular column section of $$250\,\,mm \times 400\,mm$$ is reinforced with five steel bars of grade $$Fe$$ $$500,$$ each of $$20$$ $$mm$$ diameters. Concrete mix is $$M30.$$ Axial load on the column section with minimum eccentricity as per $$IS: 456$$ - $$2000$$ using limit state method can be applied upto
A
$$1707.37$$
B
$$1805.30$$
C
$$1806.40$$
D
$$1903.7$$
2
GATE CE 2005
MCQ (Single Correct Answer)
+1
-0.3
$$IS:$$ $$1343 – 1980$$ limits the minimum characteristic strength of pre-stressed concrete for post tensioned works and pretension work as
A
25MPa, 30MPa respectively
B
25MPa, 35MPa respectively
C
30MPa, 35MPa respectively
D
$$30$$ $$MPa,$$ $$40$$ $$MPa$$ respectively
3
GATE CE 2005
MCQ (Single Correct Answer)
+1
-0.3
As per Indian standard code of practice for prestressed concrete $$(IS:1343-1980)$$ the minimum grades of concrete to be used for post-tensioned and pre-tensioned structural elements are respectively
A
$$M20$$ for both
B
$$M40$$ and $$M30$$
C
$$M15$$ and $$M20$$
D
$$M30$$ and $$M40$$
4
GATE CE 2005
MCQ (Single Correct Answer)
+2
-0.6
A concrete beam of rectangular cross section of $$200\,\,mm \times 400\,\,mm$$ is pre-stressed with a force $$400$$ $$kN$$ at eccentricity $$100$$ $$mm.$$ the maximum compressive stress in the concrete is
A
$$12.5\,\,N/m{m^2}$$
B
$$7.5\,\,N/m{m^2}$$
C
$$5.0\,\,N/m{m^2}$$
D
$$2.5\,\,N/m{m^2}$$
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