Hi all I have just been tasked with getting everything in order to have a few guys here at our job qualified for tack welding with the GTAW process. I see everything I need in D1.1 to qualify down to 1/8"  but I don't see anything in D1.3 for qualifying tack welders for thicknesses less than 1/8".  Just wondering if someone could point me in the right direction to get some guys qualified to tack sheet steel <1/8"? thanks!