Welding to a plate with rebar anchorage

Hi Tom,

Typically, engineers avoid welding on or near anchors for the following reasons:

• The mechanical properties of the anchor rod could be changed resulting in reduced load capacity.
• The chemical composition of welding area could be altered negatively affecting performance under dynamic loading.
• The corrosion resistance ability could be reduced through the welding operation.
• The combination of different influence factors has not been tested (welding different materials, alternative anchor rod materials, welding methods, welding quality, etc.). 
• Welding does not comply with the approvals of mechanical or adhesive anchors. 
• For adhesive anchors, welding could negatively affect the adhesive bond due to the conduction of heat through the anchor element.
• Welding could remove the length identification mark.

The engineer on the project will be responsible for deciding if welding is acceptable for their application.

Hope this helps,
Adam