All grating must be firmly fastened in place and welding panels to the supporting structure provides a superior, permanent installation. The diagram below indicates the recommended minimum weld size and spacing for pedestrian applications.
Vehicular applications typically require additional welding, size and spacing as determined by the specifying authority.
When the grating is designed to be removable or when welding is not practical, consider these mechanical fasteners. The minimum fastener spacing for pedestrian applications is equal to the minimum weld pattern illustrated above.