## JOINT FITUP

The design of the structure may require a joint spacing or root opening (gap) between members being welded. This is indicated by welding symbols or notes on the print. Spacing as required must ensure that the overall dimensions are maintained. For example, consider the joining of two lengths of structural shapes with a %" root opening to provide a specific overall length, as illustrated in Figure 11.7. In Figure 11.7(a), the 6-foot dimension must be maintained. Thus, the combined lengths of both members must be 6 feet minus %", or 5'-117/8" to give a finished length of 6 feet. In Figure 11.7(b), a bevel groove joint is required at the top and bottom of the channel. The length of channel required is 5'-8" minus the combined size of the “H” beams located at the top and bottom, minus the root gap dimension required at the top and bottom. Therefore, the length of channel required is:

5'-8" - 12" = 4'-8" - 14" = 4'-7%"

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

 (3) .

1. Sketch the joint preparation indicated by the following welding symbols:

 c.

 (4) .

.

 NOTE: ALL JOINTS WELDED ON BOTH SIDES

 (5)

2. a. Add an appropriate weld symbol to each of the following sketches. All members are heavy-gage metal. Assume that there is no joint preparation other than what is shown on each sketch.

b. Identify each weld symbol used.

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NOTE: WELD ON ARROW SIDE

 (1)
 (2)

(6) .

a. Identify the joints shown in the following sketch by placing the identification next to the arrowhead.

b. Identify the weld(s) that would be applied to each joint. List the joint, then the applicable weld(s).

a. What is the length of the channel that is required in fabricating the following assembly?

 b.

b. Prepare a three-view orthographic sketch with dimensions (top, front, and right side views) of the assembly.

c. Include a detailed drawing to show the joint preparation required.

a. Identify the joints formed in the assembly of the following structural shapes.

b. Explain the significance of the welding symbol shown.

d. What is the significance of the break in the welding symbol arrow line?

e. What is the significance of the letter “C” in the dimension C" X 18.75?