Why do we need a starter for a column?
Starters are needed to cast the column in proper alignment. Column starter marking is the process of casting the first 50 to 100 mm height of column for the alignment of rest of the column.
What is a column starter?
Column starter is a smaller part of the column of concrete material with the same length and breadth of column which give guideline for column extend for perfect layout.
What is a starter in foundation?
Starter bars are bars which are left to come out from the foundation in order to connect in a second stage the reinforcement of walls. When building reinforced concrete structure, it isn’t feasible to put up all the steel reinforcement bars in position in one go.
What is column shuttering?
Column box or shuttering for columns is made of plywood sheets or steel sheets fabricated with adequate stiffeners. A thin films of oil or grease should be applied to inner surface of the shuttering to enable easy removal of the column after the concrete hardens.
What is column pedestal?
Pedestal is a compression member who has the length to least lateral dimension ratio is less than 3. Pedestal is usually used in steel structure where the column load is very high.
Why reinforcement is provided in column?
Columns are essentially required with the primary longitudinal reinforcement and lateral ties to avoid buckling of the primary bars. The details of minimum and maximum limits of reinforcements, minimum no. of bars, the size of bars, cover requirements, diameter, and spacing are given in the above picture.
What is the purpose of a kicker?
In the construction terminology that I Use, a Kicker is a 5-15cm step that is provided at the Column/ Shear wall Base during the casting of the slab/ foundation. It is provided to ensure that the coordinates of the column/ wall are maintained uniformly between the slabs and essentially throughout the structure.
What is the use of starter in construction?
As the name suggests, starter bars are reinforcing bars cast into a member to give a lapped connection to further reinforcement in another concrete element to be cast against it. The easiest, and normally the cheapest method of creating starter bars is to simply have them projecting from the surface of the concrete.
What is column kicker?
What are column kickers? This 50mm-150mm step is provided at the base of a column or wall during the casting of a concrete slab. A column kicker helps to ensure the coordinates of a wall are maintained uniformly throughout the structure, which is impossible to rectify when the concrete has cast.
What is the purpose of column formwork?
Column Formwork is to be designed to be able to accommodate relatively high fresh concrete pressures as comparatively small cross-sections are concreted quickly. Therefore, the joints in particular are to be formed very carefully and tightly sealed.
How is a column constructed?
For example, a column might transfer loads from a ceiling, floor or roof slab or from a beam, to a floor or foundations. Columns are typically constructed from materials such as stone, brick, block, concrete, timber, steel, and so on, which have good compressive strength.