Singly reinforced Sections | Design of RCC Structures
In our series of articles for singly reinforced sections, we have covered the following:
- Basic definitions and formulas
- Understanding stresses and modular ratios
- Assumptions for singly reinforced sections
- Design procedure for Singly reinforced section – I
- Solved Numericals for Singly reinforced beam | Method I
- Design of Singly reinforced sections | Design Method 2
- Solved Numericals for Singly reinforced beam | Method 2
- Moment of Resistance for Singly reinforced sections
- Solved numerical example | Moment of resistance
- Solved numerical example 2 | Guide to singly reinforced sections
Now, we will move on with our discussion on “assumptions for singly reinforced sections”.
- The sections that are plane before bending remain plane after bending, at any cross-section.
- All tensile stresses are taken up by steel reinforcement and none by concrete.
- The stress to strain relationship of steel and concrete under working load is a straight line.
- The modular ratio m has the value 280/3σcbc
- There is a perfect adhesion between steel and concrete and no slip takes place between steel and concrete.