Wooden formwork is a construction support for molds used in concrete projects. It can be used to create formworks for pouring concrete or to support large boards for carrying out larger formwork installations. Depending on the materials used, wood can be reused in multiple projects, especially if handled carefully. Hardware stores may have a range of wood suitable for this purpose, and there are also pre-made wooden products specifically designed for use in formwork.
Before concrete can be poured on a construction site, a mold is needed to hold it in place while it hardens. The molds provide shaping and stability while the concrete sets and begins the drying process. In traditional wooden formwork, workers place a series of wooden planks at the desired height and connect them into a continuous shape for the project, such as a low wall. Alternatively, they may use panels made of materials like plywood to create a smooth surface, supported by formwork wood that holds the wood in place during the pouring and drying process.
Before work on a project begins, workers may measure and set lines to define the space and ensure that the outlines of any formwork are vertical and square. Once done, they can start assembling the formwork wood to prepare the site. If necessary, they can also add structural steel. Steel rods can stabilize and reinforce walls and floors that may need to bear large loads, ensuring they do not fail under pressure.
Common wood can be used for formwork, along with processed wooden and plastic products. In the case of common wood, workers may treat it with oil or other materials before use to prevent sticking. This makes it easier to remove the formwork once the concrete has set and allows the wood to be reused for other projects. Wood degrades quickly when formwork is used multiple times, unless it is treated. Construction companies may prefer processed products that last longer and are specifically designed to fit together, allowing for quick and easy assembly.
The choice of materials for formwork wood can largely depend on the specifics of the project. For home improvement activities, cleaning available wood and oiling it for easier removal later may be the most cost-effective solution. Construction companies that regularly work with concrete may prefer materials that can withstand repeated use.
