Plain concrete is strong in compression, but weak in tension. For this reason, it was originally used for simple, massive structures, such as foundations, bridge piers, and heavy walls.
Over the second half of the nineteenth century, designers and builders developed the technique of embedding steel bars into concrete members in order to provide additional capacity to resist tensile stresses.
This pioneering effort has resulted in what we now call reinforced concrete (RC). Until a few decades ago, steel bars were practically the only option for reinforcement of concrete structures.
The combination of steel bars and concrete is mutually beneficial. Steel bars provide the capacity to resist tensile stresses.
Concrete resists compression well and provides a high degree of protection to the reinforcing steel against corrosion as a result of its alkalinity.
- Material properties
- FRP bar properties
- Flexural members
- Members subjected to combined axial load and bending moment
- Design of a one-way slab
- Design of a T-beam
- Design of a two-way slab
- Design of a column
- Design of square footing for a single column