Which type of weld should be used when welding two reinforcing bars together in contact with a direct lap joint?

In the context of welding two reinforcing bars together in a direct lap joint, the use of double-flare-V-groove welds is appropriate due to their design and ability to provide a strong joint with optimal load distribution. The double flare-V-groove design ensures that both sides of the joint are accessible for welding, which is essential in creating a robust connection between the bars.

When reinforcing bars are joined in a lap joint configuration, a double flare-V-groove weld provides better penetration and fusion at the weld root, crucial for handling the stresses that may be encountered in structural applications. This weld type also allows for good accessibility and helps mitigate issues related to misalignment and warping, which can occur when welding similar materials like reinforcing bars.

Other weld types, while they may serve specific purposes, would not be as suitable for a direct lap joint between reinforcing bars as they lack the necessary configuration to ensure strong and effective attachment conducive to the anticipated loads.