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.
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.
A board foot is 1' by 1' by 1", so it is 200 square ft 1 inch thick.
lineal is the length board feet is 1ft wide X 1 ft long X 1 inch thick = 1 board foot
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
Neither. Bolt tensile strength is in pounds per square inch. You are confusing torque with bolt strength. Typically a bolt will be torqued to stretch the bolt and preload it to about 50% of its strength. The relation between torque T and preload P is T = 0.15DP where D is bolt diameter(inch), T is inch pounds and P is pounds. Then stress is P/A where A is bolt area and this stress is 1/2 of strength. Note that torque in foot pounds is simply in lb/12, or 12 inch pounds = 1 ft lb
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
1 feet = 12 inch(25 feet + 8 inch ) - (18 feet + 10 inch) = (24 feet + 20 inch) - (18 feet + 10 inch)= 6 feet + 10 inchthe reminder is 6 feet 10 inch