Here’s the big chart with four different arm slots and the progression of five pitches we have already been discussing plus the sinker, which is a lot like a cutter except with movement in the opposite direction. For the purposes of this chart, the slots as described have the following “clock” angles. Overhand: 12:00 2. If not, personally, I would have no problem using 2' long vertically slotted holes in an angle to transfer shear into another element (shear wall in this case) if I am only transfering a nominal amount of force through each bolt. If fact, coincidently, I just did 3 or 4 details doing that exact same thing this morning.

• Slot Angle Definition Math
• Slot Angle Definition Dictionary
• Slot Angle Definition Geometry
• Slot Angle Definition Meaning

Any discussion on weld types starts with the idea that it is important to distinguish between the joint and the weld.

Each must be described to completely describe the weld joint.

There are many different types of welds, which are best described by their shape when shown in cross section.

The most popular weld is the fillet weld, named after its cross-sectional shape.

Other types of welds include flange welds, plug welds, slot welds, seam welds, surfacing welds, and backing welds.

Joints are combined with welds to make weld joints.

Types of Joints

There are 5 main joints used in welding. These are:

• Butt joint
• Corner joint
• Edge joint
• Lap joint
• Tee joint

Types of Welds

Fillet Welds

A fillet weld joins two surfaces at an approximate right angle to each other. There are several types of fillet weld:

• Full fillet weld – is a weld where the size of the weld is the same as the thickness of the thinner object joined together.
• Staggered intermittent fillet weld – refers to two lines of intermittent welding on a joint. An example is a tee joint (see below) where the fillet increments that are in one line are staggered in comparison to the other line.
• Chain Intermittent fillet weld – refers to two lines of intermittent fillet welds in a lap joint or T where the welds in one line are approximately opposite those in the other line.

Other terms associated with fillet welds include:

• Boxing: which refers to the continuation of a fillet weld around a corner of a member. It is an extension of the principal weld.
• Convexity: Refers to the maximum perpendicular distance from the face of a convex fillet weld to a line joining the toes.

Groove Welds

The second most popular type of weld is the groove weld. There are seven basic types of groove welds, which are shown in figure 6-25.

The groove weld refers to beads that are deposited in a groove between two members to be joined.

More examples are shown in figure 6-26 above.

The type of weld used will determine the manner in which the seam, joint, or surface is prepared.

See figure 6-27 for the standard types of groove welds.

Surfacing Weld

These are welds composed of one or more strings or weave beads deposited on an unbroken surface to obtain desired properties or dimensions.

This type of weld is used to build up surfaces or replace metal on worn surfaces. It is also used with square butt joints.

See figure 6-28 below for examples.

Plug Weld

Plug welds are circular welds made through one member of a lap or tee joint joining that member to the other.

The weld may or may not be made through a hole in the first member; if a hole is used, the walls may or may not be parallel and the hole may be partially or completely filled with weld metal.

Such welds are often used in place of rivets.

NOTE: A fillet welded hole or a spot weld does not conform to this definition.

See figure 6-28 below for examples.

Slot Weld

This is a weld made in an elongated hole in one member of a lap or tee joint joining that member to the surface of the other member that is exposed through the hole.

This hole may be open at one end and may be partially or completely filled with weld metal.

NOTE: A fillet welded slot does not conform to this definition.

Flash Weld

Flash welding is referred to as a resistance welding process where fusion is produced over the entire abutting surface.

Heat is created by the resistance to the current flow between two surfaces and by the application of pressure after heating is mostly complete.

Flashing is accompanied by the expulsion of metal from the joint.

See Figure 6-29 below for an example of a flash weld.

Read more: Flash and Flange Weld Symbols

Seam Weld

A weld made by arc seam or resistance seam welding where the welding process is not specified.

This term infers resistance seam welding.

Refer to figure 6-29 below for an example of a seam weld.

Spot Weld

A spot weld is a weld made by arc spot or resistance spot welding where the welding process is not specified.

This term infers a resistance spot weld.

Read more: Spot Seam and Arc Weld Symbols

Upset Weld

An upset weld is a resistance welding process where fusion occurs progressively along a joint of over the entire abutting surface.

The application of pressure before heating is required and occurs during the heating period.

Heat comes from the resistance to the flow of electric current in the area of contact between the surfaces.

Welding Positions

Welding is often done on structures in the position in which they are found.

Techniques have been developed to allow welding in any position.

Some welding processes have all-position capabilities, while others may be used in only one or two positions.

All welding can be classified according to the position of the workpiece or the position of the welded joint on the plates or sections being welded.

There are four basic welding positions, which are illustrated in figures 6-30 and 6-31.

Read more about the different welding positions.

Plug welds are a round weld that is made inside of an existing hole most commonly in one piece of metal, welding that piece to another member. The plug weld symbol is a rectangle with a diameter symbol placed to the left of the symbol as well as the number associated with that diameter.

Some drawings will not indicate the hole in the print so the use of dimensions come in to play when locating where a plug weld will be executed. The location will be indicated by a centerline through the part.

Above is indicating a ½” plug weld offset 1” from the edge to the center of the weld.

Some plug welds may include a countersink of the hole of the plug weld. This is called the included angle of countersink. This angle is shown below the rectangle of the symbol itself or if the plug weld is to be on the other side it will be placed above the weld symbol. When figuring sizing of the hole remember that the diameter will be the narrow of the hole at the base of the weld.

Without a countersink included it will be necessary to follow shop standards and procedures to dictate what this needs to be, if any angle. Most shops have a procedure in place for tasks that will be done often. If it is needed it may be listed on a welding procedure for the plug welds that are being completed.

Slot Angle Definition Math

If a number of plug welds are needed there will be yet another element added to the symbol. This will be a number that is surrounded in parentheses, such as (6) for example.

When applying a plug weld it is important to know the depth of fill that is required. If the plug weld should fill the hole provided then the symbol will be left empty. This means there will be no dimension inside of the rectangle. If the hole should be filled only so much then this will be placed inside of the rectangle. This dimension will be in a fraction and indicates the amount in inches the hole will be filled, not the necessarily how much the hole will be filled.

Another element that can be added to this weld symbol may be the pitch (spacing) for multiple welds. This is located to the right of the symbol and is a number representing the center to center spacing for weld location.

Plug welds may have a contour symbol which will be added below the symbol or countersink angle if on the arrow side and above if it is on the other side of the reference line. There are many types of contours and finishing designations, these are covered in supplementary welding symbols.

This symbol represents:

Plug Weld

Arrow Side

½ inch in diameter

1/8” amount of fill

45 degree included angle of countersink

Flat contour

Finished by Machining

Slot Weld Symbol

The slot weld symbol is the same that is used for plug welds. The symbol will not show a diameter symbol before the size however. The size of the weld will be the slot width instead. This is shown to the left of the symbol just as it is shown in plug welds.

1/2” width slot weld

The length of the slot weld will be presented to the right of the symbol. This may also include a pitch showing the center to center spacing of the slot welds. If there is a pitch there will be a number of slot welds provided in parenthesis under the symbol on the arrow side or above the symbol on an other side weld.

The drawing must show the orientation of the slot welds as to not confuse direction along the part. The above image shows the slots with a vertical orientation to the part versus a horizontal layout as shown below.

A slot weld can include any number of elements, these are very similar to the plug weld symbol that was just explained.

These can include:

Arrow or other side

Size (width)

Slot Angle Definition Dictionary

Length of slot

Pitch

Depth of fill

Number of welds required

Contour

Finish

Make no mistake on the fill of a plug or slot weld fill. There is a possibility of having a fillet weld inside of a hole versus actually filling the hole for a plug weld. This could also be mistakenly done on a slot weld.

Slot Angle Definition Geometry

Plug and Slot Quiz

Slot Angle Definition Meaning

Write down all information regarding the below Welding Symbols.