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1. Obtain three adhesives you would like to know more about.
2. Read the label instructions for each adhesive carefully.
3. Prepare joints to be bonded with each of the three
products you are testing according to the instructions on the labels. Prepare
enough pieces to make two separate test joints for each adhesive.

1. Mix and apply the adhesives according to the
manufacturer’s instructions and clamp or otherwise hold the joints together as
instructed.
2. Allow the adhesive to cure for the amount of time the
manufacturer specifies for full curing.
3. Immerse one of the test pieces for each adhesive in a
bucket of water and let them soak overnight.

1. List three defects that would be reasons to remove a web
sling from service.
2. Who should inspect synthetic slings, and how often?
3. List three defects that would be reasons to remove a
steel alloy chain sling from service.

What type of hitch is shown in Figure 18-47?
Figure 18-47

What type of hitch is shown in Figure 18-48?
Figure 18-48

What is indicated by the hand signal in Figure 18-49?
Figure 18-49

What is indicated by the hand signal in Figure 18-50?
Figure 18-50

1. Attach a suitable sling and a tag line.
2. Check the path of the load to ensure that it is clear and
that no one will be in danger. Check to see that the crane boom can be extended
and swung over the landing area without any obstructions.

1. Mark off the length on the right top and bottom edges.
The length will be about twice the width.
2. Sketch the two remaining vertical lines and the back
edges.
3. Which type of pictorial drawing is easier to draw on the
job site?
4. Which type of drawing is used for working drawings?

Identify each of the drawings in Figure 19-13 as oblique, isometric, or orthographic.
Figure 19-13