Different types of RCC column exist on the basis of their shape, length and forces. Given below, the details of function and construction for these types of column.
Column stands for a vertical member that bears entire load of the beam, slabs and the whole structure. The floor and other portion of the building is modified according to the client’s or owner’s need.
In the structural drawing various information are given which range from the size of the columns, quantity of cement sand and aggregate to be blended, the number of steel bars to be arranged, gapping among the stirrups. The structural designer creates the structural drawing on the basis of the actual load on the column and the factor of safety.
A column stands for a vertical member that efficiently bears load through compression. Mainly, column belongs to a compression member as load delivers along its longitudinal axis. The reason for bending moment is because of wind earthquake or accidental loads.
Column transmits the load of the structure concerning slabs and beams over to underneath, and finally load is transmitted to the soil. The columns should be placed in such a manner so that no tensile stresses form at the cross section of the columns. The position of the columns location should be arranged in such a manner that it gets concealed in the walls partially or fully.
Types of RCC Column
Types of RCC Column depending on the Shapes
• Circular for exposed outside for good architecture view
• Square or rectangular traditional for any structure
Types of RCC Column depending on length
• Short column – if L/B<=12
• Long column – if L/B > 12
Here, L defines the height of the column and B defines width
Usually, floor height remains roughly 3 m or 10 feet, L/B ratio will be under 12, so in most of the cases short column is set. In some situation where height of floor surpasses 3 m or 10 feet, we have to verify L/B ratio so result becomes long or short column. Normally, on long column, more forces can be produced. Therefore, design should be created cautiously.
Types of RCC Column depending on moments
• Biaxial column: Designed for axial load and moment in 2 directions
• Uniaxial columns: Designed for axial load and moment in 1 direction
Usually, in a building corner most columns refer to biaxial columns and side column refers to uniaxial column and internal columns belong to any of these.
Construction Procedures of RCC Columns
Construction of RCC columns includes the following four steps:
• Column layouts
• Column reinforcement work
• Column formwork
• Pouring of concrete
Layout of Columns
Column layouts are accomplished by placing rope in the grid lines and mark the location of columns.
Column Reinforcement
The following checklist is required on the jobsite to facilitate the column reinforcement works:
• Verify the numbers and diameter of vertical bars
• Gapping among vertical bars
• Verify development length that is based on diameter of bar
• Lapping in alternate bars should derive at equivalent height.
• Lapping should not arise with beam or slab.
• Lapping should be at l/3 or 2l/3 of column according to structural notes
• Gapping among stirrups should be according to the drawing
• Hook should be bent perfectly at exact angles.
• Verify the stirrups corner. Vertical bar should appear at perfect angle edge of stirrup exactly bound with binding wire.
To gather more information, click on the following link.
https://theconstructor.org/structural-engg/types-of-rcc-column-construction/13700/
Column stands for a vertical member that bears entire load of the beam, slabs and the whole structure. The floor and other portion of the building is modified according to the client’s or owner’s need.
In the structural drawing various information are given which range from the size of the columns, quantity of cement sand and aggregate to be blended, the number of steel bars to be arranged, gapping among the stirrups. The structural designer creates the structural drawing on the basis of the actual load on the column and the factor of safety.
A column stands for a vertical member that efficiently bears load through compression. Mainly, column belongs to a compression member as load delivers along its longitudinal axis. The reason for bending moment is because of wind earthquake or accidental loads.
Column transmits the load of the structure concerning slabs and beams over to underneath, and finally load is transmitted to the soil. The columns should be placed in such a manner so that no tensile stresses form at the cross section of the columns. The position of the columns location should be arranged in such a manner that it gets concealed in the walls partially or fully.
Types of RCC Column
Types of RCC Column depending on the Shapes
• Circular for exposed outside for good architecture view
• Square or rectangular traditional for any structure
Types of RCC Column depending on length
• Short column – if L/B<=12
• Long column – if L/B > 12
Here, L defines the height of the column and B defines width
Usually, floor height remains roughly 3 m or 10 feet, L/B ratio will be under 12, so in most of the cases short column is set. In some situation where height of floor surpasses 3 m or 10 feet, we have to verify L/B ratio so result becomes long or short column. Normally, on long column, more forces can be produced. Therefore, design should be created cautiously.
Types of RCC Column depending on moments
• Biaxial column: Designed for axial load and moment in 2 directions
• Uniaxial columns: Designed for axial load and moment in 1 direction
Usually, in a building corner most columns refer to biaxial columns and side column refers to uniaxial column and internal columns belong to any of these.
Construction Procedures of RCC Columns
Construction of RCC columns includes the following four steps:
• Column layouts
• Column reinforcement work
• Column formwork
• Pouring of concrete
Layout of Columns
Column layouts are accomplished by placing rope in the grid lines and mark the location of columns.
Column Reinforcement
The following checklist is required on the jobsite to facilitate the column reinforcement works:
• Verify the numbers and diameter of vertical bars
• Gapping among vertical bars
• Verify development length that is based on diameter of bar
• Lapping in alternate bars should derive at equivalent height.
• Lapping should not arise with beam or slab.
• Lapping should be at l/3 or 2l/3 of column according to structural notes
• Gapping among stirrups should be according to the drawing
• Hook should be bent perfectly at exact angles.
• Verify the stirrups corner. Vertical bar should appear at perfect angle edge of stirrup exactly bound with binding wire.
To gather more information, click on the following link.
https://theconstructor.org/structural-engg/types-of-rcc-column-construction/13700/
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