Introduction to slab formwork

Slab formwork is a temporary system used in construction to shape and support fresh concrete until it reaches the strength necessary to support itself. This system is essential for the correct formation of slabs, which are horizontal structural elements that transmit loads to beams, columns or walls. The formwork guarantees the shape, dimensions and surface finish of the slab, being essential for the quality and safety of the structure.

The design and execution of slab formwork varies depending on the type of slab, anticipated loads, site conditions, and available technology. In addition, the formwork must be resistant, easy to assemble and disassemble, and allow adequate shoring to ensure stability during the concrete setting process.

Traditional wooden formwork

Traditional wooden formwork is one of the oldest and most widely used methods for slab construction. It consists of wooden boards, boards and beams that are assembled to form the base where the concrete is poured. Its flexibility and availability make it an economical option for small projects or in areas where other materials are not accessible.

However, wooden formwork requires careful maintenance and can present problems with warping or moisture absorption, which affects the quality of the finish and the durability of the system. In addition, their useful life is limited, which implies greater spending on materials for large-scale or repetitive projects.

Despite these limitations, its ease of adaptation to irregular shapes and complex architectural details keeps it current in many works, as long as it is used with appropriate protection and assembly techniques.

Metal formwork

Metal formwork, typically made of steel or aluminum, offers a strong, reusable, high-precision solution for slab construction. This type of formwork is especially useful in medium and large-scale projects where speed of assembly and disassembly is required, as well as high quality in the concrete finish.