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Q1. | For a reinforced concrete section, the shape of shear stress diagram is |

A. | wholly parabolic [Wrong Answer] |

B. | wholly rectangular [Wrong Answer] |

C. | parabolic above neutral axis and rectangular below neutral axis [Correct Answer] |

D. | rectangular above neutral axis and parabolic below neutral axis [Wrong Answer] |

View Answer
Explanation:-
Answer : CDiscuss it below :Alok kumar Said on 2018-10-10 06:54:48c ri8 ans Mohd moeed akhtar Said on 2018-09-10 07:37:13C Kanha suri Said on 2018-05-03 03:17:37c is correct answer Rajendra singh kanwat Said on 2017-12-29 18:25:41Eska answer d hoga rcc me c steel ke liy hota h Anmol Mishra Said on 2017-11-24 04:24:35Iska ans d shi hoga !! OOPS Login [Click here] is required to post your answer/resultHelp other students, write article, leave your comments |

**Also Read Similar Questions Below :**

⇒ Admixtures which cause early setting, and hardening of concrete are called.

workability admixtures

accelerators

retarders

air entraining agents

⇒ Permissible compressive strength of M 150 concrete grade is.

100 kg/cm2

150 kg/cm2

200 kg/cm2

250 kg/cm2

⇒ Permissible compressive strength of M 300 concrete grade is.

100 kg/cm2

150 kg/cm2

200 kg/cm2

300 kg/cm2

⇒ The ratio of the diameter of reinforcing bars and the slab thickness is

1/4

1/5

1/6

1/8

⇒ The relation between modulus of rupturefcr and characteristic strength of concrete fck is given by.

fcr=0.35Vf7

fcr=0.57f7

fcr=0.7Vf7

fcr=1.2Vf7

⇒ Minimum grade of concrete to be used in reinforced concrete as per IS:456-1978 is

M15

M20

M 10

M25

⇒ The load carrying capacity of a helically reinforced column as compared to that of a tied column is about.

5% less

10% less

5% more

10% more

⇒ Transport of concrete by pumps, is done for a distance of.

100 m

200 m

300 m

400 m

⇒ Water cement ratio is.

volume of water to that of cement

weight of water to that of cement

weight of concrete to that of water

both (a) and (b) of the above.

⇒ Pick up the incorrect statement from the following:

The bottom and top ends of slump mould are parallel to each other

The axis of the mould is perpendicular to the end faces

The internal surface of the mould is kept clean and free from set cement

None of these.

⇒ The recommended value of modular ratio for reinforced brick work is

18

30

40

58

⇒ The aggregate impact value of the aggregate used in.

building concrete is less than 45

road pavement concrete is less than 30

runway concrete is less than 30

all the above.

⇒ For a simply supported beam of span 15m, the minimum effective depth to satisfy the vertical deflection limits should be

600 mm

750 mm

900 mm

more than 1 m

⇒ To minimise the effect of differential settlement, the area of a footing should be designed for

dead load only

dead load + live load

dead load + fraction of live load

live load + fraction of dead load

⇒ According to Whitney's theory, ultimate strain of concrete is assumed to be

0.03%

0.1%

0.3%

3%

⇒ Pick up the correct statement from the following:

Segregation is necessary for a workable concrete

Consistency does not affect the workability of concrete

If the slump increases, workability decreases

None of these.

⇒ While designing the pile as a column, the end conditions are nearly.

both ends hinged

both ends fixed

one end fixed and other end hinged

one end fixed and other end free

⇒ For the construction of thin R.C.C. structures, the type of cement to be avoided, is.

ordinary Portland cement

rapid hardening cement

low heat cement

blast furnace slag cement

⇒ Percentage of pozzolanic material containing clay upto 80% used for the manufacture of pozzolana cement, is.

30%

40%

50%

60%

⇒ For ensuring quality of concrete, use.

single sized aggegates

two sized aggregate

graded aggregates

coarse aggregates.

⇒ Construction joints are generally provided in concrete.

roads

retaining walls

lining of canals

all the above.

⇒ According to Water-Cement Ratio Law, the strength of workable plastic concrete.

depends upon the amount of water used in the mix

does not depend upon the quality of cement mixed with aggregates

does not depend upon the quanity of cement mixed with a

all the above.

⇒ According to IS : 456-1978, the fiexural strength of concrete is.

directly proportional to compressive strength

inversely proportional to compressive strength

directly proportional to square root of compressive strength

inversely proportional to square root of compressive strength

⇒ For a cantilever of effective depth of 0.5m, the maximum span to satisfy vertical deflection limit is

3.5 m

4 m

4.5 m

5 m

⇒ Maximum quantity of water needed per 50 kg of cement for M 15 grade of concrete is.

28 litres

30 litres

32 litres

34 litres

⇒ The bulk density of aggregates, is generally expressed as.

tonnes/cubic metre

kg/cubic metre

kg/litre

g/cm3

⇒ The compressive strength of 100 mm cube as compared to 150 mm cube is always.

less

more

equal

none of the above

⇒ For the design of retaining walls, the minimum factor of safety against overturning is taken as

1.5

2.0

2.5

3.0

⇒ The relation between modulus of rupture fcr, splitting strength fcs and direct tensile strength fcl is given by.

tcr -rcs = tct

fcr>fcs>fc.

fcr

fc5>fcr>fC.

⇒ Pick up the incorrect statement from the following:

With passage of time, the strength of cement increases

With passage of time, the strength of cement decreases

After a period of 24 months, the strength of cement reduces to 50%

None of these.