Civil Engineering (CE) Exam > Civil Engineering (CE) Questions > As per IS 456 : 2000, using working stress me...
Start Learning for Free
As per IS 456 : 2000, using working stress method, the modular ratio of M25 grade of concrete for permissible compressive strength due to bending in concrete σcbc = 8.5 MPa is:
- a)15.63
- b)10.98
- c)12.04
- d)14.39
Correct answer is option 'B'. Can you explain this answer?
| FREE This question is part of | Download PDF Attempt this Test |
Most Upvoted Answer
As per IS 456 : 2000, using working stress method, the modular ratio o...
However, I can explain the concept of modular ratio and its formula.
Modular ratio is the ratio of the modulus of elasticity of steel to that of concrete. It is denoted by the symbol "m".
The formula for modular ratio (m) is:
m = Es / Ec
where, Es = modulus of elasticity of steel
Ec = modulus of elasticity of concrete
As per IS 456: 2000, the value of modulus of elasticity of steel (Es) is taken as 2 x 10^5 N/mm^2, and the value of modulus of elasticity of concrete (Ec) is taken as 5000 √fck N/mm^2, where fck is the characteristic compressive strength of concrete at 28 days.
For M25 grade of concrete, the characteristic compressive strength of concrete at 28 days is 25 N/mm^2.
So, the value of modulus of elasticity of concrete (Ec) for M25 grade of concrete is:
Ec = 5000 √fck
= 5000 √25
= 5000 x 5
= 25,000 N/mm^2
Therefore, the modular ratio (m) for M25 grade of concrete is:
m = Es / Ec
= 2 x 10^5 / 25,000
= 8
Hence, the modular ratio of M25 grade of concrete for permissible compressive strength due to bending in concrete is 8.
Modular ratio is the ratio of the modulus of elasticity of steel to that of concrete. It is denoted by the symbol "m".
The formula for modular ratio (m) is:
m = Es / Ec
where, Es = modulus of elasticity of steel
Ec = modulus of elasticity of concrete
As per IS 456: 2000, the value of modulus of elasticity of steel (Es) is taken as 2 x 10^5 N/mm^2, and the value of modulus of elasticity of concrete (Ec) is taken as 5000 √fck N/mm^2, where fck is the characteristic compressive strength of concrete at 28 days.
For M25 grade of concrete, the characteristic compressive strength of concrete at 28 days is 25 N/mm^2.
So, the value of modulus of elasticity of concrete (Ec) for M25 grade of concrete is:
Ec = 5000 √fck
= 5000 √25
= 5000 x 5
= 25,000 N/mm^2
Therefore, the modular ratio (m) for M25 grade of concrete is:
m = Es / Ec
= 2 x 10^5 / 25,000
= 8
Hence, the modular ratio of M25 grade of concrete for permissible compressive strength due to bending in concrete is 8.
Free Test
FREE
| Start Free Test |
Community Answer
As per IS 456 : 2000, using working stress method, the modular ratio o...
In the elastic theory for the reinforced concrete structure, concrete and reinforcing steel are converted into one material. This is done by using the modular ratio ‘m’.
Modular ratio: It is the ratio of modulus of elasticity of steel and concrete.
m = Es/Ec
However, concrete has varying moduli, as it is not a perfectly elastic material.
Therefore, its short-term modulus
is not considered and long-term modulus of elasticity is considered to take in account the effect of creep and shrinkage.
∴ The modular ratio is taken as
where σcbc is permissible compressive stress in concrete in bending.
Calculation:
Modular ratio ‘m’ (considering creep effect),
Modular ratio: It is the ratio of modulus of elasticity of steel and concrete.
m = Es/Ec
However, concrete has varying moduli, as it is not a perfectly elastic material.
Therefore, its short-term modulus
is not considered and long-term modulus of elasticity is considered to take in account the effect of creep and shrinkage.∴ The modular ratio is taken as
where σcbc is permissible compressive stress in concrete in bending.Calculation:
Modular ratio ‘m’ (considering creep effect),
Attention Civil Engineering (CE) Students!
To make sure you are not studying endlessly, EduRev has designed Civil Engineering (CE) study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in Civil Engineering (CE).
|
Explore Courses for Civil Engineering (CE) exam
|
|
Similar Civil Engineering (CE) Doubts
Top Courses for Civil Engineering (CE)View all
As per IS 456 : 2000, using working stress method, the modular ratio of M25 grade of concrete for permissible compressive strength due to bending in concrete σcbc = 8.5 MPa is:a)15.63b)10.98c)12.04d)14.39Correct answer is option 'B'. Can you explain this answer?
Question Description
As per IS 456 : 2000, using working stress method, the modular ratio of M25 grade of concrete for permissible compressive strength due to bending in concrete σcbc = 8.5 MPa is:a)15.63b)10.98c)12.04d)14.39Correct answer is option 'B'. Can you explain this answer? for Civil Engineering (CE) 2024 is part of Civil Engineering (CE) preparation. The Question and answers have been prepared according to the Civil Engineering (CE) exam syllabus. Information about As per IS 456 : 2000, using working stress method, the modular ratio of M25 grade of concrete for permissible compressive strength due to bending in concrete σcbc = 8.5 MPa is:a)15.63b)10.98c)12.04d)14.39Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for Civil Engineering (CE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for As per IS 456 : 2000, using working stress method, the modular ratio of M25 grade of concrete for permissible compressive strength due to bending in concrete σcbc = 8.5 MPa is:a)15.63b)10.98c)12.04d)14.39Correct answer is option 'B'. Can you explain this answer?.
As per IS 456 : 2000, using working stress method, the modular ratio of M25 grade of concrete for permissible compressive strength due to bending in concrete σcbc = 8.5 MPa is:a)15.63b)10.98c)12.04d)14.39Correct answer is option 'B'. Can you explain this answer? for Civil Engineering (CE) 2024 is part of Civil Engineering (CE) preparation. The Question and answers have been prepared according to the Civil Engineering (CE) exam syllabus. Information about As per IS 456 : 2000, using working stress method, the modular ratio of M25 grade of concrete for permissible compressive strength due to bending in concrete σcbc = 8.5 MPa is:a)15.63b)10.98c)12.04d)14.39Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for Civil Engineering (CE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for As per IS 456 : 2000, using working stress method, the modular ratio of M25 grade of concrete for permissible compressive strength due to bending in concrete σcbc = 8.5 MPa is:a)15.63b)10.98c)12.04d)14.39Correct answer is option 'B'. Can you explain this answer?.
Solutions for As per IS 456 : 2000, using working stress method, the modular ratio of M25 grade of concrete for permissible compressive strength due to bending in concrete σcbc = 8.5 MPa is:a)15.63b)10.98c)12.04d)14.39Correct answer is option 'B'. Can you explain this answer? in English & in Hindi are available as part of our courses for Civil Engineering (CE).
Download more important topics, notes, lectures and mock test series for Civil Engineering (CE) Exam by signing up for free.
Here you can find the meaning of As per IS 456 : 2000, using working stress method, the modular ratio of M25 grade of concrete for permissible compressive strength due to bending in concrete σcbc = 8.5 MPa is:a)15.63b)10.98c)12.04d)14.39Correct answer is option 'B'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
As per IS 456 : 2000, using working stress method, the modular ratio of M25 grade of concrete for permissible compressive strength due to bending in concrete σcbc = 8.5 MPa is:a)15.63b)10.98c)12.04d)14.39Correct answer is option 'B'. Can you explain this answer?, a detailed solution for As per IS 456 : 2000, using working stress method, the modular ratio of M25 grade of concrete for permissible compressive strength due to bending in concrete σcbc = 8.5 MPa is:a)15.63b)10.98c)12.04d)14.39Correct answer is option 'B'. Can you explain this answer? has been provided alongside types of As per IS 456 : 2000, using working stress method, the modular ratio of M25 grade of concrete for permissible compressive strength due to bending in concrete σcbc = 8.5 MPa is:a)15.63b)10.98c)12.04d)14.39Correct answer is option 'B'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice As per IS 456 : 2000, using working stress method, the modular ratio of M25 grade of concrete for permissible compressive strength due to bending in concrete σcbc = 8.5 MPa is:a)15.63b)10.98c)12.04d)14.39Correct answer is option 'B'. Can you explain this answer? tests, examples and also practice Civil Engineering (CE) tests.
|
|
Explore Courses for Civil Engineering (CE) exam
|
|
Suggested Free Tests
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
Follow Us
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup