Linear footage is a unit of area equivalent to square feet. Another name for this measurement is board feet, which manufacturers apply to materials 1 foot in width, such as wooden boards.
These materials' linear footage is their length in feet. A room's linear footage is the sum of its different sectors' areas.
You need to know a room's area when you refinish its floor, when you lay down carpet or when you calculate heating or cooling requirements.
- Locate the largest rectangular area in the room. If the room is rectangular, this is the entire room. If not, it is only a part of the room.
- Measure the rectangle's length and width. For example, a room may contain a rectangular area measuring 12 feet by 10 feet.
- Multiply the rectangle's length by its width. For example, 12 times 10 is 120 square feet.
- Multiply the length and width of any remaining rectangular spaces in the room. For example, if another single segment of the room measures 7 feet by 15 feet, multiply 7 by 15, equaling 105 square feet.
- Divide all remaining areas of the room into triangles. For example, imagine that the remaining area of the room forms a triangle 7 feet long and 3 feet wide.
- Multiply each triangle's length by half of its width. For example, half of 7 times 3 is 10.5.
- Add together the segment's areas. For example, 120 plus 105 plus 10.5 make 235.5 square feet. This is the room's linear footage.