LESSON 5 ANSWERS TO SELF TEST EXERCISES
1. The quantities of items such as cement, nails, and scaffolding are generally arrived at by estimate, whereas
pieces of lumber used for framing (c) would be calculated by a takeoff from the framing drawing. (para 5-2,a)
2. Major groups of construction are assigned a number which will be listed under the column heading of section
number. (para 5-2,d) (fig 5-2)
3. The specifications of individual items will be described in detail in the item column. (para 5-4,b) (fig 5-2)
4. The specification for 10 pieces of 2 x 4, 8 feet in length, will appear in a bill of materials as follows: The item
will be assigned an item number. The description 2 x 4 -8ft will appear in the "item" column. The
abbreviation for pieces (PCS) will appear in the "unit" column and the number 10 will be listed under the
"quantities required" column. (para 5-4,b) (fig 5-2)
5. Table 2-1, lesson 2, lists the actual dimensions of a piece of 1" x 6" dressed lumber as 3/4" x 5 1/2". The width
of the tent floor is 8' 10" or 106". Assuming a 15-percent waste factor, the correct calculation is listed as
choice b: 106" divided by 5 1/2" /.85, or 23 pieces of lumber 10 feet long. (para 5-4) (table 2-1) (fig 5-3)
6. Assuming that all sleepers are correctly cut to an 8' 10" length (no waste factor), one 10-foot board will be
needed for each sleeper; thus six pieces will be required. (para 5-4) (fig 5-3)
7. Each side brace is 4' 10" long. With proper cutting, two braces can be made from each 10-foot length of 1 x 6.
Since four braces are required, two pieces of 1 x 6-10 ft would have to be ordered. (para 5-4) (fig 5-3)
8. Each skirt board is 9' 2" long: therefore, a 10-foot length of 1 x 6 is needed for each skirt board. As shown on
the drawing, four skirt boards are specified. (para 5-4) (fig 5-3)
9. The two top rails are each 9' 2" long, so two 2 x 4-10 ft are needed. Since the four corner uprights are each 5'
1" long, four more 2 x 4-10 ft are needed. When these four pieces are cut to a proper length of 5' 1", four
pieces of length 4' 11" will remain. Two of these four pieces can be cut to a length of 3' 7" and used as the
center uprights. Therefore, two 2 x 4-10 ft for the top rails and four 2 x 4-10 ft for the uprights adds to a total
of six 2 x 4-10 ft. (para 5-4) (fig 5-3)
10. With proper cutting, four brace stakes, each 2' 4" in length for a total of 9' 4", can be made from one 2 x 4-10
ft. (para 5-4) (fig 5-3)
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