AWS D1.9-D1.9M pdf free download

AWS D1.9-D1.9M pdf free download.Structural Welding Code- Titanium.
2.4.2 Complete Joint Penetration (CJP) (;rc Welds. The weld size of a complete joint penetration groove weld shall he the thickness of the thinner part joined. Weld reinforcement shall not he used when calculating weld size.
2.4.3 Partial Joint Penetration (PJP) Groove Welds. Weld reinforcement shall not be used when calculating weld size.
2.4.4 Effective Area. The effective area shall be the product of the effective weld length multiplied by the weld size.
2.5 Fillet Welds
2.5.1 Maximum Weld Size. The maximum fillet weld size permitted along edges of material shall be as shown in Figure 2.1 and detailed in the following subclauses:
(1) The thickness of the base metal, for metal less than 1/4 in [6 mm] in thickness.
(2) 1/16 in [1.5 mm] less than the thickness of base metal, for metal 1/4 in [6 mm] or more in thickness, unless the weld size is designated on the drawing or the weld is designated on the drawing to be built out to obtain full throat thickness. The distance between the edge of the base metal and toe of the weld may he less than 1/16 in 11.5 mmj, provided the edge is clearly visible and the weld size clearly verifiable.
2.5.1.1 The effective length of a straight fillet weld (not curved) shall be the overall length of the full-size fillet, including end returns with lengths no greater than the width of the narrower member. No reduction in effective length need he made for either the start or the crater of the weld if the weld is of full size throughout its length.
2.5.1.2 The effective length of a curved fillet weld shall be measured along the centerline of the effective throat. If the effective length of a fillet weld in a hole or slot leads to an effective area greater than the area found from 2.6.1, then the effective length of the fillet weld about the curve shall he used.
2.5.1.3 The minimum effective length of a fillet weld shall be at least four times the weld size, or the weld size shall be considered not to exceed one fourth its effective length.
2.5.1.4 The minimum length of an intermittent fillet weld shall he 1-1/2 in [38 mm] or four times the weld size. whichever is greater.
2.5.2 Effective Area. The effective area of the fillet weld shall he the product of the effective weld length and the effective throat. Stress in a fillet weld shall he considered as shear applied to this area, for any direction of applied load.
2.5.3 Effective Throat. For fillet welds between parts meeting at angles between 80° and 1(X)° the effective throat (E) shall he taken as the shortest distance from the joint root to the weld face of a 90° diagrammatic weld (see Figure 2.8). For welds in acute angles between 60° and 80° and for welds in obtuse angles greater than 100°. the weld leg size required to provide the specified effective throat shall be calculated to account for geometry.
2.5.4 Fillets in Holes or Slots. Fillet welds in holes or slots in lap joints may be used to transfer shear, to prevent buckling, or to prevent separation of lapped parts. These fillet welds may overlap previous parts of the weld, subject to the provisions of 2.5. 1 .2. Fillet welds in holes or slots shall not be considered plug and slot welds.
2.5.5 Fillets in Skewed T-Joints. Fillet welds may be used in skewed T-joints having a dihedral angle of not less than 60° nor more than 120° (see Figure 2.2. details A and B).
2.5.6 Size and Spacing of Holes and Slots. Minimum spacing and dimensions of holes or slots when fillet welding is used shall conform to the requirements of 2.6.
2.6 Plug and Slot Welds
2.6.1 Effective Area. The effective area shall he the nominal area of the hole or slot in the plane of the faying surfaces. Plug and slot welds shall be designed to resist shear loads parallel to their effective area.
AWS D1.9-D1.9M pdf download.