FAQ’s from IS Codes (IS456, IS875, IS1893, IS800…)

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1. As per IS 46 how many panel types are there for calculating moment coefficient in design of slabs

1. 7 Types table 26

2. 8 Types table 26

3. 9 Types Table 26

4. 10 Types table 26

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2. As per IS 456 in which annexure is it expalined what is one way slab

1. Annexure d – 1.10

2. Annexure d – 1.11

3. Annexure d – 1.12

4. Annexure d – 1.13

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3. As per IS 456 how do we provide torsion reinforcement in slab

1. Annexure c – 1.8

2. Annexure d – 1.8

3. Annexure e – 1.9

4. Annexure f – 1.9

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4. In Which Clause of IS 456 is it expalined how do we provide shear reinforcement if tow-v exceeds tow-c

1. 38.4

2. 40.4

3. 42.4

4. 44.2

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5. In Which table of IS 456 is it expalined where do we find the value of max shear stress of concrete in beams with shear reinforcement

1. Table 5

2. Table 15

3. Table 20

4. Table 25

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6. In Which Clause of IS 456 is it expalined what are the additional moments to be calculated inn case of slender compression members

1. 39.1

2. 39.3

3. 39.5

4. 39.7

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7. In Which Clause of IS 456 is it expalined what are the assumptions for design using limit state of collapse for compression

1. 37.1

2. 38.1

3. 39.1

4. 40.1

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8. In Which Clause of IS 456 is it expalined what is limit state design

1. 33.1

2. 35.1

3. 37.1

4. 39.1

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9. In Which Clause of IS 456 is it expalined what is the max spacing of bars in a flat slab

1. 31.5.1

2. 31.6.1

3. 31.7.1

4. 31.8.1

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10. In Which Clause of IS 456 is it expalined what is difference between drop and column head in flat slab

1. 30.2.2 & 3

2. 30.3.2 & 3

3. 31.2.2 & 3

4. 31.3.2 & 3

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11. As per IS 456 in which clause it is explained how to provide positive reinforcement in deep beam

1. 29.3.1

2. 29.3.2

3. 29.3.3

4. 29.3.4

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12. What is the min longitudinal reinforcment in caes of pedistals in IS 456

1. 0.10% of pedistal CS Area

2. 0.15% of pedistal CS Area

3. 0.20% of pedistal CS Area

4. 0.12% of pedistal CS Area

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13. What is the min dia of longitudinal bar for columns as per IS 456

1. 10 mm

2. 11 mm

3. 12 mm

4. 13 mm

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14. Which clause of IS 456 is usded to understand side face reinforcment in beam

1. 26.4.1.3

2. 26.5.1.3

3. 26.4.2.3

4. 26.5.1.4

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15. As per IS 456 Which Clause do we use to find the max area of tension reinforcemnt in beams

1. 26.5.1.1.A

2. 26.5.1.1.B

3. 26.5.1.1.C

4. Both a and c

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16. Which clause of IS 456 do we reffer to understand the nominal cover to reinforcment

1. 26.4.1

2. 26.4.2.1

3. 26.4.2.2

4. All of the above

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17. Which clauses from IS 456 do we use to cartail tensial reinforcment in Flexural members

1. 24.2.3.1 to 24.2.3.5

2. 25.2.3.1 to 25.2.3.5

3. 26.2.3.1 to 26.2.3.5

4. 27.2.3.1 to 27.2.3.5

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18. What is the code for detailing earthquake resitant construction

1. IS 13902

2. IS 19302

3. IS 13920

4. IS 19320

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19. Which clauses from IS 456 do we use to understand the min excentricity for design of columns

1. 22.4

2. 23.4

3. 24.4

4. 25.4

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20. As per IS 456 What is the effective length of compression members?

1. Annexure B Table 28

2. Annexure C TABLE 28

3. Annexure D Table 28

4. Annexure E TABLE 28

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21. Which Clause do we use to call a member as a column as per IS 456?

1. 24.1.1

2. 24.2.1

3. 25.1.1

4. 25.2.1

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22. Which clauses from IS 456 do we use to assume the salb as a compression flange of a T beam or L beam

1. 21.1.1

2. 22.1.1

3. 23.1.1

4. 24.1.1

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23. For monolithic construction, where shall be the moments computed for the design of the members?

1. Face of the supports

2. Centre of the supports

3. 25cm from face of supports

4. 50cm from face of supports

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24. In which clause the effective span of a simply supported beam or slab is discussed in IS456?

1. 22.1.A

2. 22.2.A

3. 22.3.A

4. 22.4.A

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25. In which clause (Figure number) the minimum dimensions of RCC members are discussed in IS456?

1. Fig 1

2. Fig 2

3. Fig 3

4. Fig 4

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26. What is the code concerned to live loads consideration on structures?

1. IS875-1

2. IS875-2

3. IS875-3

4. IS875-5

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27. What is the clause that discussed on the loads to be considered while designing structures?

1. 19.1

2. 19.2

3. 19.3

4. 19

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28. What is the method of design usally adopted in design of structural elements

1. 18.1.1 & 18.1.2

2. 18.2.1 & 18.2.2

3. 18.3.1 & 18.3.2

4. 18.4.1 & 18.4.2

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29. What should be the curing period to achieve 90% strength?

1. 7 days

2. 28 days

3. 18 days

4. 12 days

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30. Clause for stripping time of formworks for various structural elements in IS456?

1. 11.1

2. 11.3.1

3. 11.2.1

4. 11.1.1

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31. Clause for Cleaning and treatemnt of concrete formwork in IS 456?

1. 11.1

2. 11.2

3. 11.3

4. 11.4

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32. What is the minimum time of mixing of concrete?

1. 2min

2. 3min

3. 4min

4. 1min

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33. Which codes do we refer for concrete mixers?

1. IS 1791 and IS 12119

2. IS 1791

3. IS 12119

4. IS456 and IS800

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34. What is the table concerned to water cement ratios for different grades of concrete with 20mm aggregate?

1. Table 4

2. Table 5

3. Table 6

4. Table 7

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35. What is the clause concerned to discussion on the nominal cover to reinforcment in IS456?

1. 25.4

2. 26.4

3. 27.4

4. 28.4

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36. What is the cluase that talks on the Durabilty of Concrete in IS 456?

1. 6

2. 7

3. 8

4. 9

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37. What are the values of Creep Coefficient as per IS 456?

1. 7 Day – 2.2

2. 28 Days – 1.6

3. One Year – 1.1

4. All of them

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38. What is the clause concerned to usage of sea water for concrete mixing as per IS 456?

1. Clause 5.4.3

2. Clause 5.3.3

3. Clause 5.2.3

4. Clause 5.1.3

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39. What should be the PH value of water used for mixing concrete as per IS 456?

1. Should not be less than 6

2. Should not be less than 4

3. Should not be less than 3.5

4. Should not be more than 7

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40. What are the two popular Grades of Cement?

1. 53 and 34 Grade

2. 34 and 43 Grade

3. 43 and 53 grade

4. 53 and 63 Grade

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41. The maximum area of tension reinforcement in beams shall not exceed

1. 1.50%

2. 0,15%

3. 4%

4. 0.40%

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42. The minimum diameter for longitudinal bars in a column is

1. 6 mm

2. 8 mm

3. 12 mm

4. 16 mm

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43. The Effective length is of a columns of length having both the ends fixed is?

1. 2L

2. L

3. L/2

4. L

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44. How many parts (books) does IS code 875 contain?

1. 5

2. 6

3. 7

4. 8

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45. Which is the most basic IS code for a Civil engineering designs?

1. IS 567

2. IS 456

3. IS 455

4. IS 383

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46. The percentage of reinforcement in slabs, when HYSD bars are used should not be less than?

1. 0.15

2. 0.12

3. 0.3

4. 1

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47. The ratio of the diameter of reinforcing bars and the slab thickness is?

1. 1/4

2. 1/5

3. 1/6

4. 1/8

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48. The minimum cover in a slab should neither be less than the diameter of bar nor less than

1. 10 mm

2. 15 mm

3. 25 mm

4. 13 mm

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49. According to IS:456-1978, the cblumn or the strut is the member whose effective length is greater than?

1. The least lateral dimension

2. 2 times the least lateral dimension

3. 3 times the least lateral dimension

4. 4 times the least lateral dimension

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50. For a reinforced concrete section, the shape of shear stress diagram is?

1. Wholly parabolic

2. Wholly rectanguler

3. Parabolic above neutral axis and rectanguler below neutral axis

4. Rectanguler above neutral axis and parabolic below neutral axis

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