Category: Writing

A board foot is the amount of lumber contained in a board
that is 1 inch thick, 1 foot wide, and 1 foot long (Fig. 11-13).
Fig. 11-13

1. If 65 square feet of copper flashing is needed for a
particular job and 20% is to be added for waste, how much should be ordered?
2. The total cost of building a house is $146,000. What
percentage is spent on excavation, foundation, and framing if these costs are
$72,275?

1. Cube with sides of 10 feet 6 inches. Answer should be in
cubic feet rounded to 1 decimal place.
2. Rectangular solid with a width of 5½ inches, length of 3
feet 3 inches, and height of 8 inches. Answer should be in cubic inches.

1. In constructing a building, 2% of the total cost is
allowed for excavation. What is the total cost of the building if the
excavation costs $2,825?
2. In making mortar, lime is used in an amount equal to 12%
of the cement. How much lime is necessary if 995 pounds of cement is used?

1. What is the difference in the cross-sectional area (area of the opening) between a 12-inch-diameter culvert pipe and an 18-inch-diameter culvert pipe? Answer should be square inches rounded to 1 decimal place.
2. An attic area requires 400 square inches of opening area for ventilation. How many 8-inch-diameter openings are needed?

1. It is estimated that 2,550 square feet of decking is
needed for a roof. If an additional 20% is added for waste, what is the total
amount required?
2. The total area to be covered with oriented strand board
(OSB) is 1,250 square feet. How much should be ordered if 8% is added for
cutting and waste?

A semicircular bay is built to enclose one side of a spiral
staircase, as shown in Figure 11-10. What is the area of the floor inside the
bay? Answer should be in square feet rounded to 2 decimal places.
Figure 11-10

1. How wide must insulation be to wrap around an 8-inch
square duct?
2. How wide must insulation be to wrap around an
8-inch-diameter round duct? Round to one decimal place.
3. What is the perimeter of a rectangular building lot that
is 80 feet wide and 140 feet deep?

1. A conduit has an inside diameter of 2.875 inches. What is the cross-sectional area of the inside of the conduit (the area of the opening)? Answer should be in square inches rounded to 3 decimal places.
2. A circular tabletop with a diameter of 36 inches is covered with plastic laminate. The laminate is cut from a square piece 36 inches on a side. What is the area of the waste? Answer should be in square inches rounded to 2 decimal places.

1. Circle with a diameter of 14 meters. Round to 1 decimal
place.
2. Circle with a diameter of 62 feet 6 inches. Answer should
be in square feet rounded to 2 decimal places.
3. Half circle with a radius of 18 inches. Answer should be
in square inches rounded to 1 decimal place.