How many pieces of 8-foot chair rail, installed at 36 inches height, are needed for the dining room?

• A. 3
• B. 4
• C. 5
• D. 6

Answer: (C)

To determine the number of pieces of 8-foot chair rail needed for installation at a height of 36 inches, it's important to first clarify how chair rail is typically installed and the measurements involved. Chair rail is generally placed around the perimeter of a room to visually separate the wall space, and it is measured in linear feet.

The installation height of 36 inches doesn’t affect the amount of chair rail needed in terms of material, as the length required depends on the perimeter of the dining room rather than the height of the chair rail itself. Assuming the dining room is a standard rectangular shape, you would need to measure the total perimeter by adding up the lengths of all walls.

Let’s consider that the room has an approximate perimeter of 24 feet (for a smaller dining room). Since each piece of chair rail is 8 feet long, you would divide the total perimeter by the length of each piece:

Total length required / Length of each piece = Number of pieces needed

24 feet / 8 feet = 3 pieces

In this case, if the dimensions of the dining room perimeter were larger, say 32 feet, then you would divide again:

32 feet / 8 feet = 4 pieces

The conclusion drawn from the calculation is