Formwork system is defined as a solid barrier that helps to shape the concrete until it hardens and get a certain strength. The concrete takes the shape of the formwork system or molds in which it is contained. When it comes to the selection of concrete formwork systems, people think that it is dependent on the application of the formwork system in “where” and by what measures. The concrete formwork system selected for a construction project is dependent on the following points:

#1 Pouring Concrete Size

#2 Weight on the Formwork System

#3 Pressure Exerted on the Formwork System by Concrete

#4 Type of Compaction

#5 Amount of concrete to be retained

There are a few key detailed elements that should be considered while selecting a concrete formwork system, which is listed below:

1. Workers’ experience or using habits with a particular type of old formwork system affects the choice of new formwork. Without proper training of how to using a new formwork system, the loss is expected. While no production loss is expected if a familiar formwork system is chosen. 

2. As many people think, steel forms are a better choice compared with other types in providing tolerances. Steel forms have intrinsic stiffness and do not absorb moisture. Therefore, steel formwork system is less likely to be deformed what assured the shape of concrete will not be deformed.

3. The concrete formwork system selected can be either purchased or rented. The cost of purchasing and its long-term use must be analyzed before buying it. If it is better to rent the formwork, then formwork type which is easily available and economical is chosen.

4. For low height structures, wood formwork is the best choice. For tall forms of 20ft height steel formwork with extra bracing and supports are the best choice compared to wooden formwork.

5. In terms of aesthetics, steel formwork provides a clean finish with fewer bug holes on the casted concrete surface compared with wooden forms.

6. For casting concrete with the straight, curve or several offsets, and abrupt turns, steel form is an efficient choice. Thin wooden forms can be used if cost is an issue.