Formwork is a critical element of concrete construction. It improves the efficiency of the project by providing appropriate access, ensuring the structural integrity of the structure, and providing safe working conditions for the workers. A good formwork system should be flexible, strong, and rigid, and it should be designed to be reusable. However, if a system is not used appropriately, it can cause problems and even permanent consequences.
When deciding which type of formwork to use, consider the construction site, the environment, and the specific building application. The type of material used is important to the quality and durability of the finished product. For example, plastic forms are lightweight, flexible, and durable. They are best suited to repetitive structures. This type of formwork is commonly used in residential projects.
Another common formwork option is engineered formwork. Unlike traditional formwork, engineered formwork is made from pre-assembled modules. These systems can be set up and removed on-site, saving time and labor costs. Many construction companies prefer this form of formwork. As a result, it is more affordable and offers a smoother surface finish.
Reusable plastic formwork is a modular system, which can be assembled and used over and over again. Typically, this type of formwork is used for quick pours of concrete. Typical uses include wall formwork in housing and municipal construction projects.
Another alternative is single-use formwork. While this form of formwork is cheaper, it is not as versatile as timber or steel. There is also a risk of damage and discoloration during the construction process.
If you are using a pre-formed concrete panel, then your building plans should ensure that the size of the unit is consistent with the structure’s overall size and design. You may also want to ensure that the form is able to be easily and safely moved. Some formwork systems are designed so that they can be removed without damaging the concrete.
Depending on the needs of the project, you may choose a custom-built formwork system. These formwork systems are usually designed to meet the specifications of the individual project. Generally, they are designed to minimize the labor costs involved and shorten the duration of the project.
Several other types of formwork exist, such as fiberglass, aluminum, and steel. Each is used for different applications. Steel formwork is waterproof, has a smooth surface finish, and is economical. In addition, it has a high durability and is easily installed with a crane. Unlike metal formwork, it does not shrink or warp.
Aluminum formwork is lighter and more economical than steel. This type of formwork is often used in cast-in-situ concrete. Compared with a prismatic section, it uses less concrete. Because it is a lightweight material, the formwork can be transported and assembled quickly.
Other common types of formwork include timber, plastic, and fabric. Timber is the most widely used type of formwork. Although it is inexpensive, it has a limited reusability and is a time-consuming to assemble. Plastic and fabric alternatives are popular on residential sites and are able to be reused for over 100 times.
