Q:What is the spacing between the reinforcing bars in a welded rebar mesh?

There are clear standards for the spacing of rebar in welded rebar mesh, mainly divided into two cases: the direction of fabrication and the vertical direction. The spacing of rebars in the direction of fabrication is usually limited to three standard values: 100mm, 150mm, and 200mm. This is the most common and standardized setting. Whether it's a pre-formed mesh or a custom mesh, this direction is basically based on these dimensions.

The spacing of the vertical reinforcing rebars is relatively flexible, ranging from 100mm to 400mm, and must be an integer multiple of 10mm. In other words, you can see specifications such as 100mm, 150mm, 200mm, 250mm, 300mm, 350mm, and 400mm, and in some cases, even more than 400mm.

If used for cement-concrete pavement of highways, when cold-rolled ribbed rebars are used, the longitudinal steel bar spacing should not exceed 200 mm, and the transverse rebar spacing should not exceed 300mm.

The allowable deviation of grid spacing is usually ±10mm. The control standards for this deviation are slightly different at the factory and during site acceptance, but they are both within this range.

In areas of stress concentration, such as at floor corners or where pipes pass through, the spacing may be increased to 80mm or even 50mm, but this is a special design and not a standard specification.

Time：09/11/2026 16:18:36