weld size per D1.1

By Kix

Date 06-11-2007 12:28

Well, if you want to stay in the prequalified status you will find the answer to your second question on page 71 in the 2006 D1.1. If you go outside of these limitations you will have to do testing. You did not state what code you are going by so i can only help if it's for D1.1. I know there is a rule about your not suppose to weave more then 3 times the electrode diameter, but i can't find it. I did find a rule about width to depth ratio on page 58. 3.7.2. Hope this helps!

By waynekoe (**)

Date 06-11-2007 19:43

You can't find it because there isn't one. As hogan says, read the table.

By Kix

Date 06-11-2007 19:48

Well, maybe you should look at it a bit closer. Hit those pages up like page 71 witch is table 3.7. If you go back to page 69 table 3.4 it will give you the minimum fillet welds for the thickness of plate you will be welding.

By cwi-cws (*)

Date 06-14-2007 01:22

KIX,i'm sure d1.1 does not state the rule about 3 times the electrode diameter. if you look at the footnotes on pg.71 it will answer your questions

By hogan

Date 06-11-2007 15:42

table 3.7

By gerald.beer Date 06-11-2007 21:22

Thankyou

By gerald.beer Date 06-14-2007 16:00

would someone explain 3.7.2 in words that I can pass along to the welders on the production floor

By swnorris (****)

Date 06-14-2007 16:13

The commentary explains it. See C-3.7.2 and Figure C-3.2

By CHGuilford (****)

Date 06-14-2007 16:30

Did you read the commentary to 3.7.2 in the back of D1.1? That might help you to clarify what is being said and why there is a concern.

I would tell the welders that a weld bead is not supposed to be deeper than the weld face is wide, and the weld bead is not supposed to "keyhole" so the weld nugget is wider than the weld face.

The "keyhole" would be difficult to see unless you cross cut and macroetch a weld sample. The depth/width determination would be noticeable by the joint prep.

By gerald.beer Date 06-14-2007 21:05

Thankyou ,I just read it and I am still unclear about bead width,not in relation to depth,but as to the choice of stringers instead of wide weaves in groove welds.I know that wide weaves are not good practice from a physics stand point ,but always thought that there was something in the code other than what you and our colleagues have just cited.I too have heard somewhere about 3 x electrode dia. but I am sure that come from some unofficial source.

By hogan

Date 06-14-2007 22:15

3.7.2 lists limits based on width to depth of a weld pass.
the last section on table 3.7 list your max single pass width

By gerald.beer Date 06-19-2007 15:36

I forgot to say thanks thanks

By 803056

Date 07-02-2007 04:27 Edited 07-02-2007 21:17

You need to consider the welding process when using table 3.7.

Consider the single pass vertical fillet weld made with SMAW. A 1/2 inch fillet leg translates into a face dimension larger than 5/8 of an inch. There goe the 3X the rod diameter restriction for low hydrogen electrodes. There are no restrictions on the width of the second layer, third layer, etc., for SMAW.

It is doubtful that the restictions of depth versus width limitations imposed would be concern with SMAW. It would most likely be a concern with SAW.

Now, if notch toughness is an issue, I would be concerned with the width of the layers because of the implications on travel speed and heat input.

Best regards - Al