It would depend on the material the board is made from.
1 x 18 pine boards are used for wide shelves and can support a lot of weight, but will sag at lengths of 4 feet or more unless they are center braced.
The actual width of a six inch board is 5-1/2in.
The recommended thickness of cement board for a tile floor installation is 1/2 inch.
A board foot is 12 inches by 12 inches by 1 inch thick. A board 6 inches wide, 24 inches long and 1 inch thick is still 1 board foot. Any combination of the three measurements that add up to the first, 12x12x1 is considered 1 board foot.
Yes, you can use 1/4 inch cement board on floors for tiling.
Assuming you mean 18 inch by 18 inch, you will need 133 and 1/3 tiles.
Fonts are typically measured in "points" (pt). Each point is roughly 1/72 inch. 1 inch = 72 pt 1/4 inch = 18 pt The font uses 72 pt size, with an 18 pt stroke (outline) on each character
lineal is the length board feet is 1ft wide X 1 ft long X 1 inch thick = 1 board foot
Measure and cut the cement board to fit the bathroom walls. Secure the cement board to the wall studs using cement board screws. Leave a 1/8 inch gap between boards and a 1/4 inch gap between the board and the floor. Tape and mud the seams with fiberglass mesh tape and thin-set mortar. Allow the mortar to dry completely before tiling over the cement board.
1 board foot is a board that is 1 foot long, 1 foot wide and 1 inch thick, so since you did not give length and with of the boards there is no way to answer your question.
0.708661417 inchesDirect Conversion Formula 18 mm*1 in25.4 mm=0.7086614173 in
A board foot is 12 inches by 12 inches, 1 inch thick. Any combination of measurements that equal this is 1 board. 6x24x1 is 1 board foot. 2.9 board foot could be anything. There should be another measurement saying what this is. Board foot is used to figure cost as most common wood is the same price per board foot. Could be 2x4, 2x12 or 1 inch, it all works out the roughly the same price.
85 inches