A252 Reinforcement mesh with 8mm wires is frequently used in domestic heavy duty applications and commercial concreting as a fabric for reinforcing concrete slabs, walls and other constructions. When encased in concrete, mesh greatly increases the rigidity and strength of the structure. As the coefficient of thermal expansion is similar in both steel and concrete, a steel mesh reinforced concrete slab or wall expands and contracts at a comparable rate, therefore temperature fluctuations will not cause cracking of the concrete. Reinforcing steel is very strong in tension and concrete is strong in compression, by combining these two materials a very durable building structure is created. Steel reinforcement mesh is frequently specified by a qualified structural engineer.
For DIY, Self-Build and many domestic applications such as patios, driveways, shed and garage bases, walls etc. A142 mesh is most commonly used. It has 6mm longitudinal and cross wires and is reasonably light and manageable. As the expected loads placed on domestic concrete slabs etc. are relatively low, there is less requirement for a heavier mesh.
Need some help? Call our friendly team of foundation experts on 01268 571571.
Genius Hints. Always have sufficient concrete covering for the mesh, both above, below and around. Mesh should be supported from below at regular intervals by Continuous Hystools, Circular Wire Spacers, Concrete Bar Spacers or Plate Spacers which are made for this purpose. Lemon carry a large stock of these and many more accessories and can deliver to site along with your reinforcement on one of our specialist crane offload lorries.
Standardised mesh fabric is defined in British Standard denominations (such as A193, or B785). These numbers refer to the cross sectional areas of the mesh per metre squared. So with A193 mesh for example, there is 193mm2 of steel in each 1m (1000mm) width of mesh.