The size of a fillet weld is determined **by its ‘leg length’**. The figure is pretty theoretical – it depicts an equilateral triangle – whereas a real weld is never flat, and will be either concave or convex, and not necessarily equal-length legs. For strength calculations, we’re interested in the throat thickness.

What is the maximum size of the fillet weld?

- The maximum size of fillet weld will be=
**0.7 x T**, where T is the base metal thickness. In case of dissimilar thickness, we should consider the thinner base metal thickness. Fillet welds joints are most commonly used in fabrication and structures. A fillet weld joint can be loaded in any direction in shear, compression, or tension loading.

The formula is** T x W**. The fillet weld sizes are usually determined by the fillet weld legs. So, to determine the fillet weld sizes, you should measure the length of the fillet weld legs of the widest right triangle that you can see in the cross-section of the fillet weld.

Contents

- 1 How is fillet weld measured?
- 2 How do you measure weld size?
- 3 How is fillet weld convexity measured?
- 4 What is the maximum size of fillet weld?
- 5 What is the minimum size of a fillet weld?
- 6 What is the size of weld?
- 7 What does G mean in welding symbol?
- 8 What are the 3 types of fillet joints?
- 9 What is the weakest plane in fillet weld?
- 10 How do you calculate the area of a weld?
- 11 How minimum & maximum size of fillet weld is determined?
- 12 What is the maximum size of fillet weld made with a single pass?
- 13 What is the maximum size of fillet weld for a plate of square edge?

## How is fillet weld measured?

Fillet weld sizes are measured by the length of the legs of the largest right triangle that may be inscribed within the fillet weld cross section. Fillet weld sizes determine theoretical throat.

## How do you measure weld size?

Fillet welds may have a size associated with them. This size is called out on the left side of the symbol before the vertical side. The size is indicating the leg length of the weld. If a single size is called out this is specifying that weld should have equal leg sizes.

## How is fillet weld convexity measured?

1) Maximum convexity (C) = 0.1 × actual fillet weld size (S) + 0.03 in.

## What is the maximum size of fillet weld?

The maximum size of fillet weld is obtained by subtracting 1.5mm from the thickness of the thinner member to be jointed. When welds are applied to round toe of steel sections, the maximum size of the weld should not be more than 1/3 of the thickness of the section at toe.

## What is the minimum size of a fillet weld?

Explanation: The minimum size of fillet weld should not be less than 3mm and not more than thickness of thinner part joined.

## What is the size of weld?

The leg length is usually designated as the size of the weld. The throat of the weld is the distance from the center of the face to the root of the weld. Typically the depth of the throat should be at least as thick as the thickness of metal you are welding.

## What does G mean in welding symbol?

When a finish symbol is used, it shows the method of finish, not the degree of finish; for example, a C is used to indicate finish by chipping, an M means machining, and a G indicates grinding. When this symbol is placed on a welding symbol, welds are to continue all around the joint.

## What are the 3 types of fillet joints?

Tee Joint, Lap Joint, and Corner Joint.

## What is the weakest plane in fillet weld?

For a given amount of weld material, the fillet weld is not as strong as due to the heavy concentration of the stress. ∴ For fillet weld, the weakest plane is along the throat section.

## How do you calculate the area of a weld?

the area of the excess weld metal is given by the formula (w x h)/2. the area ‘A’ is (t-r) x (2r +g). the area ‘B’ is g x r.

## How minimum & maximum size of fillet weld is determined?

The size of a fillet weld should be calculated by the designer of the welded structure, based on the nature and magnitude of applied loads, on the material and on the design basis.

## What is the maximum size of fillet weld made with a single pass?

For GMAW and FCAW, the largest single pass fillet weld in the horizontal position, for prequalified WPSs, is one size larger — 3/8”. All of the above has lead to the general rule-of-thumb that 5/16” is a reasonable maximum weld size for single pass welds, made in the horizontal position.

## What is the maximum size of fillet weld for a plate of square edge?

When filet weld is applied to the square edge of member, the maximum size of weld should be less than the edge thickness by at least 1.5 mm.