2. Objectives
• Define the following terms:
– Detail drawing
– Assembly print
– Subassembly print
• Correctly identify the size of the
legs of a fillet weld
• Correctly identify a double fillet
weld
3. Objectives (cont’d.)
• Correctly identify fillet welds having
unequal legs
• Correctly identify the length of a
fillet weld using:
– Notes
– Dimension
• Correctly identify the extent of a
fillet weld
4. Size of the Legs
• Size of the fillet weld refers to the
length of the legs of the weld
• Two legs assumed to be equal size
• Size shown to left of weld symbol
• Double fillet weld shown on both
sides of the joint
• Size of legs indicated for each fillet
weld
5.
6.
7.
8.
9. Size of the Legs (cont’d.)
• Fillet welds may have unequal legs
– Size of each leg indicated in
parentheses at left of weld symbol
• Symbol does not specify which
dimension belongs to which leg
– Must be detailed on the drawing
• General note covers size of fillet
welds
– Dimension not on welding symbol
10.
11. Length of Fillet Welds
• Length placed immediately right of
weld symbol if specified
• Lengths described by symbols with
dimension lines
• When length not specified on the
welding symbol
– Fillet weld assumed to be continuous
• When weld-all-around symbol
used, no length required
12.
13.
14.
15.
16. Determining the Extent of
Welding
• Two methods to show extent of
welding:
– Graphically by section lining
• Extension lines used as terminal points
• Dimension lines with dimensions
included
– Multiple arrows point out sections to
be welded
• Arrow applied for each section
17.
18.
19. Pitch and Intermittent
Welding
• Intermittent welding consists of a
series of short welds
– Each short weld called an increment
• Pitch: center-to-center distance
– Shown right of the length increment
dimension
• Chain intermittent welding: welds
appear directly opposite each other
20.
21.
22.
23. Pitch and Intermittent
Welding (cont’d.)
• Staggered intermittent welds not
directly opposite each other
• When making combination weld
– Leave space between end of
continuous weld and beginning of first
intermittent weld
– Space equal to pitch minus the length
of one increment
24.
25. Pitch and Intermittent
Welding (cont’d.)
• Length of increment extended to
terminate the weld at end of joint
– When length of joint extends beyond
specified length of the increment
– Same applied to staggered
intermittent welds
• Extension and dimension lines
used with welding symbol
28. Use of Fillet Weld in
Combination with Other
Symbols
• Fillet weld symbol used in
combination with other symbols
• True of many other weld symbols
29.
30. Summary
• Size of the fillet weld refers to the
length of the legs of the weld
– Two legs assumed to be equal size
• Fillet welds may have unequal legs
– Size of each leg indicated in
parentheses at left of weld symbol
31. Summary (cont’d.)
• Two methods to show extent of
welding: graphical, multiple arrows
• Intermittent welding: series of short
welds
