This project addresses several design issues related to the strength of fillet welds and partial joint penetration (PJP) welds. The primary objective of this research are: Develop a rational explanation of the directional strength increase for fillet welds.

AISC Specification for Structural Steel Buildings: Connection: Combination of structural elements and joints used to transmit forces between two or more members.

Table J2.3 of the AISC Specification (AISC, 2022) specifies minimum effect throats for PJP groove welds, but this is unlikely to govern for a fillet-reinforced PJP weld that is being designed for a full-capacity joint.

A CJP groove weld is defined in the AISC Specification as a “groove weld in which weld metal extends through the joint thickness, except as permitted for HSS connections.” A PJP groove weld is defined as a “groove weld in which the penetration is intentionally less than the complete thickness of the connected element.”

Mar 21, 2022 · This article covers what is CJP, PJP, their welding symbols, Inspection requirements, differences between CJP & PJP, and design details. What is CJP weld joint & CJP weld meaning? CJP means Complete Joint Penetration (also called Full Penetration weld ).

Apr 24, 2024 · IDEA StatiCa Connection offers PJP groove welds as an option for welds as per AISC 360 standards. Users can specify any weld that is edge-to-surface as a PJP weld in every manufacturing operation, e.g., weld or contact, fin plate, etc.

Jun 30, 2015 · A study featuring five full-scale tests on PJP-welded column splices is presented. The test matrix investigates a range of parameters including column sizes as well as variations in connection details.

PJP (partial joint penetration) welds are sized using an "effective throat". The AISC Specification has requirements for minimum effective throat thicknesses listed in Table J2.3. The program compares the specified effective throat against the thicknesses of the materials, and lists the weld as 'failing' if it does not comply.

In fact, the current AWS D1.1 allows filled weld substitution (or PJP with fillet rein-forcement) automatically unless the EOR specifically requires a CJP groove weld (for more about this, see Tom Schlafly’s article “The New Groove Weld System,” 01/12).

Oct 27, 2022 · The failure plane for the PJP weld is at the face of the bottom plate as shown in the image below, which comes from AISC's Design Guide 21. The throat dimension refers to the shortest distance from the root to the face of the weld, which for a PJP weld is approximately the depth of the groove.