Why reinforcement is provided alternative in column?

Question

Accepted Answer

Reinforcement is provided in column to increase its load-bearing capacity and prevent failure due to compression.

Reinforcement helps to resist bending and shear forces in the column.
It also helps to prevent buckling and reduces the risk of collapse.
The amount and type of reinforcement used depends on the size and height of the column.
For example, a taller and thinner column may require more reinforcement than a shorter and thicker one.

Accepted Answer

Axial compression load: The main bars or longitudinal reinforcement in a column resist the axial compression load imposed on the column and transfer it to the footing or the structure below.
- Lateral stability: The lateral ties, also known as secondary reinforcement, keep the longitudinal bars in position and provide lateral stability to the structure.
- Tensile forces: Concrete is not able to withstand tensile forces effectively. Reinforcement with steel, which is capable of enduring high levels of tension, helps the concrete withstand the tensile forces.
- Load transfer: Reinforcement with steel and concrete (RCC) helps transfer and resist the tensile stress developed at the bottom of the beam due to bending.
- Shear capacity: Lateral ties and binders resist buckling of vertical rebars and improve shear capacity.
- Ductility: Using lateral confinement enhances ductility and core concrete strength.

Accepted Answer

Reinforcement is provided alternately in columns to ensure proper distribution of load-bearing capacity and to enhance structural integrity. Alternating reinforcement helps prevent the occurrence of potential weak zones or failure points within the column, particularly in areas of high stress concentration. It also helps in controlling cracking and improving ductility, which are crucial factors for the overall performance and durability of the structure. Additionally, alternating reinforcement can optimize the use of materials and construction costs while maintaining structural efficiency.

Why reinforcement is provided alternative in column?

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