What is the wire size for welded wire fabric (WWF) that is 2" x 4"?

Welded wire fabric (WWF) is a material made from wire strands welded at their intersections, primarily used for reinforcement in concrete construction. The dimensions provided, such as 2" x 4", refer to the spacing of the wires, meaning that the wires are spaced 2 inches apart in one direction and 4 inches apart in the other.

The size of the wire itself, designated in the given choices, corresponds to the gauge of that wire, which is a critical factor in its strength and application. A 16/16 wire size indicates that both the longitudinal and transverse wires are 16-gauge, which is a common choice for many applications of welded wire fabric, providing a balance of strength and flexibility appropriate for general use in flooring and other structural applications.

In contrast, the other options involve different gauges that either exceed the strength or flexibility needed for typical installations or do not conform to general industry standards for a 2" x 4" WWF layout, making them less common or unsuitable for general concrete reinforcement applications. Thus, the choice of 16/16 wire is justified based on its compatibility with the specified spacing dimensions and common usage in construction practices.