What is Column Kicker? Why it is Used in Construction?
Column Kicker is a small concrete step used at the bottom of columns or walls to make sure that correct coordinates of columns or walls are maintained between floor slabs. So, a column kicker should be used at all positions where columns or walls are constructed. After the construction of the kicker is completed, then the formwork of columns or slabs can be placed immediately, and the kicker will guarantee exact column base alignment and location.Dimensions and Formwork of Column Kicker
The thickness of the column kicker ranges from 50mm to 150mm whereas its width and length are the same as the column for which the kicker is constructed. The best height of the column kicker is 150mm because it provides a good structural start for the column or wall.
Fig.1: Column Kicker
Structurally, the thickness of the kicker less than 150mm is not desired. If the kicker thickness is greater than 150mm, then it tends to slump with the weight of concrete in them. After the formwork of the column kicker is placed, then fresh concrete is placed monolithically with the slab.
Fig.2: Column Kicker Formwork Installation
Advantages of Column Kicker
- Maintains column and wall dimension between slabs
- Prevent the movement of longitudinal reinforcement of columns
- Helps the maintaining of vertical alignment of the column
- Simplify the installation of column formworks, so it enhances the quality speed of construction.
- It ensures the provision of designated column concrete cover
Fig.3: Checking column cover after kicker formwork is placed