In general construction, what is the purpose of using welded wire reinforcement?

Using welded wire reinforcement serves the primary purpose of increasing the tensile strength of concrete slabs. Concrete is strong in compression but weak in tension, making it susceptible to cracking under tensile forces. By integrating welded wire reinforcement into the concrete, the tensile strength is significantly enhanced. The welded wire mesh consists of a grid of steel wires that are welded at intersections, providing a systematic means to distribute tensile forces throughout the slab. This reinforcement helps prevent shrinkage cracks and enhances the overall durability and performance of the concrete structure.

While the other options might have some validity in specific contexts, they do not align with the core function of welded wire reinforcement. For example, while cost reduction can sometimes be an indirect benefit due to improved slab performance, it is not the reinforcement's primary intention. Similarly, aesthetic value and thermal insulation are not functions that welded wire reinforcement addresses, as these pertain to design choices and material selections external to the functions of strengthening concrete.