Weld Section Modulus

In most cases the weld metal strength will govern.

Weld section modulus. Assessment of fillet weld groups ref notes and table properties of fillet welds as lines. The following are equations to define the section modulus area of a butt weld that includes the full weld length as well as active loading bearing area. Tion groove weld sizes shall be equal to or greater than the size specified in 3 12 2 unless the wps is qualified per section 4.

Fillet welds by themselves do not fully fuse the cross sectional areas of parts they join although it is still possible to develop full strength connections with fillet welds. The methods described below is based on the simple method of calculation of weld stress as identified in bs 5950 clause 6 7 8 2. The other method identifed in bs 5950.

The links below on the left are section modulus calculators that will calculate the section area moment of inertia properties of common shapes used for fabricating metal into various shapes such as squares rounds half rounds triangles rectangles trapezoids hexagons octagons and more. Structx resources stress and strain weld groups weld group formulas simply select the picture which most resembles the weld group under consideration for a list of relevant weld group property formulas to help with weld design. In weld design problems it is advantageous to work with strength per unit length of the weld or base metal.

6 2 1 limitations on weld dimensions see aisc spec. 2 3 3 2 effective weld size flare groove. Section modulus of throat area of butt weld mm3 in3 full weld length.

Fillet i weld mm 4 in 4 location center of gravity where. The following are equations to define the fillet weld moment of inertia equations for various weld configurations. Fillet welds have a triangular cross section and are applied to the surface of the materials they join.

Always check weld metal and base metal strength.