#### 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.

**In our next article, we will discuss the design methods of Singly reinforced sections.**

This blog is very educative and beneficial.

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how can you be able to know the quantity of dead load or imposed load in designing of reinforced concrete beam

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why 0.67 fck value is taken in concrete assumptions.

compressive strength of concrete is taken as 0.67 times the compressive strength of concrete in cube….and don’t ask nonsence type questions

two types of loads are in beam one is live load and other is dead load(self load) along these all types of load is negligible ….

self load is calculate by (vol×per unit load) and live load is actually given in questions….

boath the loads are summed and total load are detemined