![For a given loading on a rectangular plain concrete beam with an overall depth of 500 mm, the compressive strain and tensile strain developed](https://www.gkseries.com/blog/wp-content/uploads/2023/07/For-a-given-loading-on-a-rectangular-plain-concrete-beam-with-an-overall-depth-of-500-mm-the-compressive-strain-and-tensile-strain-developed-.jpg)
Q. For a given loading on a rectangular plain concrete beam with an overall depth of 500 mm, the compressive strain and tensile strain developed at the extreme fibers are of the same magnitude of 2.5×10-4. The curvature in the beam cross-section (in m-1, round off to 3 decimal places), is _
Solution:
![](https://www.gkseries.com/blog/wp-content/uploads/2023/07/image-183.png)
Given,
ϵ=ϵt=ϵc=2.5×10−4
y = 250 mm = 0.25 m
As per flexure formula:
![](https://www.gkseries.com/blog/wp-content/uploads/2023/07/image-184.png)
=0.001m−1