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1. Check the end frames to see that the posts are plumb (use
a level to ensure that they are perpendicular to the earth’s surface—see
Chapter 14) and the horizontal pieces are level.
2. Have your instructor check your work before you proceed.

Plank the first stage of scaffolding. The planks should have cleats to prevent them from slipping off the end frame (Fig. 5-8).
Fig. 5-8

1. Place planking approximately 8 feet from the ground. The
planking from the first stage can be moved up, or you may choose to leave that
planking in place and place new planking on the second stage.
2. Install guardrails around your work platform, according
to the manufacturer’s instructions.

1. A surprising number of ladders that are in use present
serious safety hazards. You may have such a ladder at home, or your school
might have one or more older ladders that present safety hazards.
2. Find a stepladder or extension ladder that has been in
use for a few years and inspect it. Complete the following form as you do your
inspection.

1. How many feet of cove molding are needed to trim a room
with four walls, measuring 16 feet, 12 feet, 16 feet, and 12 feet?
2. In a five-day workweek, you worked seven hours, eight
hours, seven hours, six hours, and nine hours. How many hours did you work that
week?

What is the total length of the house shown in the partial
floor plan in Figure 6-1?

1. A house requires ductwork in the following lengths: 26
feet, 18 feet, 9 feet, 8 feet, 8 feet, 5 feet, and 3 feet. How many total feet
of ductwork are needed?
2. A house requires 12 cubic yards of concrete for the main
slab, 6 cubic yards for the footings, and 7 cubic yards for the garage. How
many total cubic yards are required for the house?