Knife Plates

[Don P]

This is a link to what luap is describing.
chapter 3 describes the procedures for prequalified welds;
https://law.resource.org/pub/us/cfr/ibr/003/aws.d1.1.2000.pdf

Edit, here is some text describing the certification for WPS's, Welding Procedure Specifications. Our building department really hasn't looked very hard at welding and steel bolting in the past, that is changing so I've been reading up and taking a certification class in hopes of being able to do basic prequalified welds in the field. In the past for instance on one job I welded up reinforcing steel cages inside of stone piers that were then welded to the knife plates The pier reinforcing steel was also welded to horizontal bars that supported the railings. This was all happening in conjunction with the stonemason's work. It is much easier for me to do it than to call in a welder repeatedly for small jobs. Right now I'm waiting on one to come weld the tops and bottoms of 4 steel posts. Much easier if I can do it. I may have to call in a special inspector which is the way the BO is leaning, that is the purpose of my reading this stuff of late. Anyway, here is what I was just reading, I had found the shortened version in a code reference which referred to this;

4.1.1.2 Previous WPS Qualification.
The engineer may accept properly documented evidence of previous
qualification of the WPSs that are to be employed. The
acceptability of qualification to other standards is the Engineer's
responsibility, to be exercised based upon the
specific structure, or service conditions, or both. AWS
B2.1.XXX-XX Series on Standard Welding Procedure
Specifications may, in this manner, be accepted for use in
this code.


4.1.2 Performance Qualification of Welding Personnel.
Welders, welding operators and tack welders to be
employed under this code, and using the shielded arc
welding (SMAW), submerged arc welding (SAW), gas
metal arc welding (GMAW), gas tungsten arc welding
(GTAW), flux cored arc welding (FCAW), electroslag
welding (ESW), or electrogas welding (EGW) processes,
shall have been qualified by the applicable tests as described
in Part C of this section. See Commentary.

4.1.2.1 Previous Performance Qualification.
Properly documented evidence of previous performance qualification
of welders, welding operators and tack welders
may be accepted with the Engineer's approval. The acceptability
of performance qualification to other standards
is the Engineer's responsibility, to be exercised
based upon the specific structure, or service conditions,
or both. Welders and welding operators qualified by standard test to
AWS B2.1, Standard for Welding Procedure and Performance Qualification,
may, in this manner, be accepted for use in this code.