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Know the Column Formwork Parts and How to Install It

Navigasi - In a construction structure, column formwork serves as a form of building design. Column formwork is designed by pouring concrete inside with various shapes. In the process, the column formwork uses removable and non-removable varieties with the characteristics of quick installation.

Know the Column Formwork Parts and How to Install It
Know the Column Formwork Parts and How to Install It


The column formwork itself has important parts. Each part has its own way of installation. Here are the parts of the column formwork and how to install it:

What are the Parts of Column Formwork? As for some parts of the column formwork you need to know:

1. Column shoes (kicker)


The manufacture of a column shoe is adjusted according to the plan of the column cross section. The material used is generally wood, nails, bolts or both which are used as a connector so that the resulting shape is really rigid.

The kicker is attached to the base of the column or floor by means of nails. In addition to using wood material, you can also use cast concrete with a height of approximately 5 cm or you can also use aluminum/elbow iron. The main purpose of kicker installation is to place the mold or column formwork in the correct position.

2. Mold/Formwork Panel (Shutter)


A wide variety of materials can actually be used as molded panels or formwork. However, what is commonly used is plywood. This is because of the consideration of the economical aspect in which its use can be used four to five times and the surface of the concrete made tends to be smoother.

The manufacture of panels for the sides of the mold or column formwork is supported using wooden beams in the direction of the heart. This panel is also supported horizontally with horizontal reinforcement in the form of clamps that are adjusted to the plan. The part that needs more attention is how to bring together the panels to form a corner that can meet well. Upright reinforcing beams usually use wooden beams with sizes and spacing based on the plan.

For now, upright reinforcing beams are widely used by companies or manufacturers of molds or formwork that have patent rights. The advantages of using prefab beams are that they tend to be lighter in weight, uniform in dimensions, stronger, more durable, straighter, and can be used repeatedly. In addition, horizontal reinforcing beams (clamps) usually use wooden beams that are pressed and locked or shut off with nails.

These horizontal beams tightly bind the mold or formwork around the column. Horizontal beams will also be useful in castings where the weight of the wet aggregate can compress the plywood panels onto the uprights. Until finally it can be held by this horizontal beam. Another material that can also be used in this process is steel clamps.

In an effort to remove all impurities that can adversely affect the concrete, one of the panels should be provided with a hole in the base of the panel. This hole makes it possible to clean the bottom of the column before the casting process is carried out. This hole is called a clean out hole which is adjusted based on needs. 3. Support (Braching)

The mold or column formwork must be supported in all directions to avoid changes in position, especially during the casting process. Materials that can be used are iron pipes, wooden blocks, and scaffolding pipes. You can also rent scaffolding if you don't want to be complicated.

3 Tips for Choosing Column Formwork


Column formwork is an important part of a construction. Without proper column formwork, the foundation of a building will be a bit weak and, in the worst case, not able to withstand the weight of the building. Therefore, you have to make sure that you choose the right column formwork.

Then how? Here are some tips that you can use as a guide when choosing column formwork molds.

1. Ensure Quality


The main tip in choosing the right column formwork is to ensure quality. The column formwork you choose must be appropriate and in accordance with the structure of the column to be worked on.

Then, the surface of the column formwork must be flat so that the results of the column concrete casting will produce perfect results.

2. Security


Safety is important in the world of construction. You should also pay attention to this when choosing column formwork. You have to make sure that the column formwork you choose is strong enough to withstand the workload during the work process

3. Effective and Efficient


The construction process is inseparable from costs and materials. You must ensure that the selection or manufacture of column formwork has gone through an effective and efficient process as possible and has been adjusted to the needs.

What Materials Are Needed To Make Column Formwork?


You need some equipment to make column formwork smoothly and get good results. Here are some of the materials you will need to make column formwork.

  1. Column panels. Column panels serve as column formwork.
  2. Tie Rod. This tool will have a function as a fastener between panels on the formwork.
  3. Push Pull Base. This tool serves to hook the push pull prop with the floor so that the column stands upright.
  4. Push Pull Prop. This tool functions as a reinforcing brace and a vertical adjustment device that makes the column or wall stand upright.
  5. Tie Rod Wing Nut. This tool has a function to adjust and strengthen the relationship between panels or column formwork with tie rod scaffolding.
  6. Waller. This tool is similar to a belt that serves to strengthen the walls of the column formwork.
  7. Push Pull Brackets. This tool functions as a hook between the push pull prop and the column formwork.


What are the Steps for Installing Column Formwork?


For the installation of column formwork, you can follow these steps:



  • Set the correct position on the column with the measuring tool.
  • Make a mark for the column shoe based on the planned column size by pulling the thread moistened with paint.
  • Then, pulled from the ends of the column and control the straightness of the position of the other columns.
  • Installing column shoes.
  • Installing and completing the column reinforcement includes the installation of concrete decking on the outer sides of the reinforcement.
  • Installing molded panels or formwork that has been coated with oil. Then, put a cover on the corner of the panel meeting as an anticipation measure in case of leakage.
  • Installing column clamps according to plan.
  • Position the location of the mold or formwork so that it is vertical and supported firmly, it should use a theodolite.
  • Cleaning dirt or remnants of wood, wire, or other pieces that are in the mold or formwork through the cleanout hole.
  • Cast concrete to the planned height, which is more than 2.5 cm above the base elevation of the beam.
  • After the concrete is strong enough, the mold or formwork can be removed.

When is Column Formwork Dismantling?


Ideally, the demolition of the concrete formwork is carried out 8 hours after casting ends. You have to make sure that you are not in a hurry to dismantle the formwork. Why is that? Because dismantling the formwork too quickly will make the binding process to the formwork imperfect. This can have an impact on damage or defects in the column formwork. Those are the parts that are in the column formwork and also how to install it. With the knowledge of the parts that are in the column formwork, you are expected to know what the functions are and also how to install them. As a result, you can create a strong building structure properly and correctly. 
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