2 pints = 1 quart 2 pints = 1 quart .001 millilitre
8 quarts = 1 peck 4 qts. = 1 gallon .01 centilitre
4 pecks = 1 bushel 1 gal. = 231 cu. ins. .1 decilitre
4 quarts = 268.8 cu. ins. 1. litre or cu. decim.
1 heaped bushel = 1-1/4 10. dekalitre
struck bushels. 100. hectolitre
The cone in a heaped 1000. cu. metre or
bushel must be not kilolitre
less than 6 ins. high.
As if this were not enough, when we go to sea we use another system.
The depth of water is measured in fathoms (6 feet = 1 fathom), the mile
is 6086.07 feet long = 1.152664 land miles, and 3 sea miles = 1 league.
In our cubic measure:
1728 cubic inches = 1 cubic foot
27 cubic feet = 1 cubic yard
A cord of wood is 4 ft. × 4 ft. × 8 ft. = 128 cubic feet.
A perch of masonry is 16-1/2 × 1-1/2 × 1 = 24.75 cubic feet
Isn't it about time we used the metric system? The reader will not
mind one more standard unit. Lumber is measured by the board foot. Its
dimensions are 12 × 12 × 1 inches; it contains 144 cubic inches and
is 1/12 of a cubic foot. A board 10 feet long, 1 foot wide and 1 inch
thick contains 10 board feet. One of the same length and width but only
1/2 inch thick contains 5 board feet.
The contents of any piece of timber reduced to cubic inches can
be found in board feet by dividing by 144, or from cubic feet by
multiplying by 12. As simple examples: How many board feet in a piece
of lumber containing 2,880 cubic inches? 2880/144 = 20 board feet. How
much wood in a joist 16 feet long, 12 inches wide and 6 inches thick?
16 × 1 × 1/2 = 8 cubic feet: 8 × 12 = 96 board feet. A simpler method
may be used in most cases. How much wood in a beam 9 inches x 6 inches,
14 feet long? Imagine this timber built up of 1-inch boards. As there
are nine of them, and each 14 ft. × 1/2 foot × 1 inch and contains 7
board feet (Fig. 235), 7 × 9 = 63 board feet. Again, how much wood in
a timber 8 inches × 4 inches, 18 feet long? This is equivalent to 4
boards 1 inch thick and 8 inches or 2/3 foot wide. Each board is 18 ×
2/3 × 1 = 12 board feet, and 12 × 4 = 48, answer. (See _b_, Fig. 235).
To take a theoretical case: How much wood in a solid circular log of
uniform diameter, 16 inches in diameter, 13 feet and 9 inches long?
Find the area of a 16-inch circle in square inches, multiply by length
in inches and divide by 144.