According to IS 456:2000, the maximum compressive strain in concrete under axial loading at the limit state of collapse is specified as ______.

Explanation:

• According to IS 456:2000, the maximum compressive strain in concrete under axial loading at the limit state of collapse is taken as 0.002.
• This is a standard value used to define the ultimate strain in concrete at the failure point under axial loads.

 Additional Information

• Strain Compatibility: The value of 0.002 is used in conjunction with the stress-strain curve for concrete, particularly in the design of reinforced concrete beams and columns. This strain value helps in determining the ultimate strength of concrete elements, ensuring that structures can carry the required loads safely.

• Safety Considerations: By using this limit state of collapse strain, the design ensures that the concrete remains within the elastic limit for most of the service life, only reaching failure (at 0.002 strain) under extreme loading conditions.