Some useful construction tips for shuttering of column
To retain the concrete shuttering tightly in proper position and for correct arrangement, a concrete pad known as starter is casted prior to settling the shuttering.
The density will be approximately 45 mm to 60 mm and dimensions will be exactly equivalent to the dimensions of projected column.
The starter is to be cured for a day or 2 so that it becomes strong to set the shuttering around it.
Column box or shuttering for columns is formed with plywood sheets or steel sheets fabricated with plenty of stiffeners.
A thin film of oil or grease should be included with inner surface of the shuttering so that the column can be detached smoothly once the concrete gets solidified.
Shuttering should be arranged in a perfect manner to its verticality and diagonals should be examined to verify whether the dimensions are correct or not.
Formwork should be comprehensively supported with props size prior to pouring the concrete to resist it’s movement horizontally or vertically throughout concreting.
The gaps close to the shuttered joints should be sealed with plaster or a piece of wood to get rid of any leakage of slurry.
Appropriate space should be arranged in the inside face of the shutter and reinforcement by setting up cover blocks of about 40mm.
The shutters should be detached after 24 hrs. of casting and if it is required to detach them previously, it should be kept up to sixteen hours.
The removal of shutters should be performed delicately devoid of any jerks in order that edges of columns are not defective.
Precautions should be taken concerning fixing and supports of column shuttering so that it can’t be moved throughout concreting.
Diagonals of the shuttering should be examined properly to make sure that dimensions are perfect.
For more information, go through the following article civilsnapshot.com