This section is from the book "The Building Trades Pocketbook", by International Correspondence Schools. Also available from Amazon: Building Trades Pocketbook: a Handy Manual of reference on Building Construction.
16 ounces................................= | 1 pound.........................lb. |
112 pounds................................ = | 1 hundredweight ......cwt. |
20 cwt., or 2,240 lb.................= | 1 ton...............................T. |
24 grains (gr.) ..........................= | 1 pennyweight .........pwt. |
20 pennyweights...................... = | 1 ounce.........................oz. |
12 ounces................................... = | 1 pound.........................lb. |
1 lb. = 12 oz. = 240 pwt. = 5,760 gr. | |
2 pints (pt.) .............................= | 1 quart........................qt. |
8 quarts ...................................= | 1 peck....................pk |
4 pecks......................................= | 1 bushel .......................bu. |
1 bu. = 4 pk. = 32 qt.= 64 pt. | |
The U. S. struck bushel contains 2,150.42 cu. in. = 1.2444 cu. ft. Its dimension are, by law, 18i in. in diameter and 8 in. deep. The heaped bushel is equal to 1 1/4 struck bushels, the cone being 6 in. high. The dry gallon contains 268.8 cu. in., being 1/8 bu.
For approximations, the bushel may be taken at 1 1/4 cu. ft.; or a cubic foot may be considered 4/5 of a bushel.
The British bushel contains 2,218.19 cu. in. = 1.2837 cu. ft. = 1.032 U. S. bushels.
4 gills (gi.) ..........................= | 1 pint ............................pt. |
2 pints...............................................= | 1 quart.................................qt |
4 quarts................................... = | 1 gallon .....................gal. |
31 1/2 gallons...................................= | 1 barrel...............................bbl |
2 barrels, or 63 gallons ..........= | 1 hogshead................hhd. |
lhhd. = 2bbl. = 63 gal. = 252 qt. == 504 pt. = 2,016 gi. | |
The U. S. gallon contains 231 cu. in. = .134 cu. ft., nearly; or 1 cu. ft. contains 7.480 gal. The following cylinders contain the given measures very closely:
Diam. | Height | Diam. | Height | ||
Gill............. | 1 3/4 in. | 3 in. | Gallon ...... | 7 in. | 6 in. |
Pint ......... | 3 1/2 in. | 3 in. | 8 gallons | 14 in. | 12 in. |
Quart ....... | 3 1/2 in. | 6 in. | 10 gallons | 14 in. | 15 in. |
With water at its maximum density weighing 62.425 lb. per cu. ft.), a gallon of pure water weighs 8.345 lb.
For approximations, 1 cu. ft. of water is considered equal to 7 1/2 gal., and 1 gal. as weighing 8 1/3 lb.
The British imperial gallon, both liquid and dry, contains 277.274 cu. in. = .16046 cu. ft., and is equivalent to the volume of 10 lb. of pure water at 62° F. To reduce U. S. to British liquid gallons, divide by 1.2. Conversely, to convert British into U. S. liquid gallons, multiply by 1.2; or, increase the number of gallons 1/5.
 
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