A gallon of water equals 231 cubic inches and weighs 3-1/3 pounds. A cubic foot of water equals 7-1/2 gallons and weighs 62-1/2 pounds.
Water expands 1/11 of its bulk in freezing.
One cubic inch of water evaporates into a cubic foot of steam.
One inch of rainfall means 100 tons of water on every acre.
Doubling the diameter of a pipe or cylindrical vessel increases it's capacity four times.
Double-riveting is 16 to 20 percent stronger than single riveting.
To find the circumference of a circle, multiply the diameter by 3.1416. To find the diameter of a circle, multiply the circumference by .31831. To find the area of a circle, multiply the square of the diameter by .8862.
To find the contents of a pile of cordwood, multiply the length, width and height together and divide the product by 128. This will give you the number of cords.
KP, WA, entered 1999-12-11