AWS D1.3

Date 10-09-2002 14:31

I have a few questions about this code and I hope you guys can help out. These are all pertaining to arc spot welds on decking.

1) If a PQR is tested using a A572 grade 50 (Group 2) steel for the base metal welded with E-6022 does this cover Group 1 steels also? Section 1.2.1 does not clarify this enough for me. I did notice in the D1.1 code that the filler metal requirements is 70XX for Group 2 steels. But D1.3 1.2.1 does not say that this matters.

2) In D1.3 4.6.4.1 it requires a 1/2" minimum base metal. What is the qualification range of the base metal? Some joist are 1/8" thick and it is hard to stay within the variables of the WPS when the PQR was done on 1/2" material.

By John T. (*)

Date 10-09-2002 18:41

1) 1.2.1 does say that "These steels may be welded to any of the steels listed in the latest D1.1" I agree it's pretty vague but the fact remains.

2) I dont know what the significance of the 1/2" material is, but it shows up in all of the qualification tests where sheet steel is being welded to supporting structural steel. I asked a SCWI the same question when preparing some WPS's for fillet welds and he "suggested" using a range of 1/8" - 3/4". I know this does not answer your question, but it's all I have.

By rhoople (*)

Date 10-16-2002 20:06

First of all, why are you using a E6022 rod? I assume you are using the SMAW weld process. In D1.1 you should be using a E7015, 16, 18, or 28 for ASTM A 572 grade 50 mat. Look at table 3.1 in the D1.1-2002 code book, it gives you all the filler metal combinations for prequalified base metals. Yes it would then also qualify that filler material for group I and II, I hope this helps you.

By Wildturkey (**)

Date 10-18-2002 13:00

This was a WPS that was submitted to me for review. I was told that the PQR could be done on a Group II steel since the electrode had to match the lowest tensile strength of the two steels being joined together. In this case being the decking. I rasied the flag about table 3.1 and after talking with our SCWI he said this would be ok.

By rhoople (*)

Date 10-16-2002 20:18

Part 2 of your question, It qualifies you to the material tested and thicker, you might have to do a seperate PQR for the .125" material. Now, if you would have done your PQR to sheet to sheet, you would be qualified to both sheet to sheet, and sheet to supporting structural member.

By Wildturkey (**)

Date 10-21-2002 12:08

Where does D1.3 state this? I havent been able to find it.