Two or more members may be welded to another member by means of a plug weld. When this is specified, the joint or joints to be welded are shown by a section drawing. The section drawing shows the member or members that will require joint preparation, Figure 15.14(a) and (b). Note the variation on the preparation FIGURE 15.14 ■ Plug welds in a three-member assembly, required.

Graph paper is provided at the end of this review for your use.

1. How does a slot weld differ from a plug weld? a.

b.

2. Show the desired welds called for in sketch A in sketch B.

6. a. Complete the following welding symbol to indicate a [4]/4" plug weld with a 60° angle of countersink on the other side of the joint, a 4" pitch, and depth of fill.

b. Sketch how the weld would appear on the drawing.

7. Complete the following welding symbol to indicate three 1" plug welds on the arrow side member of the joint with 6" pitch, :/2" diameter, and 60° countersink.

30° 5/8 f—]2 4^ DET

4. Where on the welding symbol is the size of a plug weld shown?

5. List all information supplied by the welding symbols shown.

b.

When is depth of filling not shown on the welding symbols for plug and slot welds?

9. Apply the correct symbol or symbols to the top view for the welds shown in the section view.

10. Interpret fully the welds specified on the design of the Building Girder.

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11. a. What is the purpose of including the note shown in the tail of the following welding symbol?

b. If the note were not included, what would be the required finish?

12. Complete the following welding symbol to indicate six %" plug welds having a depth of filling with a 3" pitch to join three members of a fabrication as shown in the following drawing.

(e.

d

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І1/4І 4

8 60'

^2-12 1 t—j 3" Z

0 Ї

BUILDING GIRDER

, JOETAIL ■T*|, rjvV

SEE NOTE

NOTE: UNLESS OTHERWISE SPECIFIED SIMILAR WELDS HAVE THE SAME DIMENSIONS.

SLOT WELDS (5)

V-GROOVE WELD, DEPTH, FLUSH

FILLET WELDS WITH CONVEX CONTOUR

SQUARE GROOVE WELDS (FIELD WELDED) WITH GROOVE WELD SIZeI"

-FILLET WELDS, and 1 Legs (detail"A")

PLUG WELDS (INCLUDE PITCH, SIZE, DEPTH, ANGLE OF COUNTERSINK - SELECTION OF SIZES OPTIONAL)

1 ^ DETAIL A

T|—i-4

REINFORCED BEAM

13. Prepare a two-view sketch, front and side views, of the reinforced beam. Include all welding symbols necessary to describe the welds. Include weld details and dimensions where necessary.

14. Sketch the welding symbol that will indicate the following plug weld.

15. Apply the welding symbol that will indicate the following slot weld.