Roofing Square Explained. The term roofing square and roof pitch are the most commonly used terms in the roofing industry. 1 roofing square = 100 square feet. It does not matter how you arrive at 100 square feet. 10 feet x 10 feet = 100 square feet or 1 roofing square. 5 feet x 20 feet = 100 square feet or 1 roofing square.
How much does it cost to produce 1 gallon of ethanol?It will cost about $1.10 to $1.20/gal to make the alcohol from various feed-stocks like corn, barley, potatoes, or Jerusalem artichokes. You will also have by-products which you can sell or use as animal feed, reducing the total cost down to about $.95/gal.. If you do this on a large enough scale, it will cost anywhere form $0.95/gallon to $1.40/gal to make the alcohol, depending on your feedstock. Look at my web pages, Mashing and Fermentation and also,  Molasses and Rum .
$100 billion per year is lost in productivity and related health costs due to alcohol. Fact 4. 7 out of 10 adults drink alcohol. Fact 5. One drink creates a feeling of relaxation. Two and a half drinks in an hour affects a person's judgment. Five drinks in two hours will raise the blood alcohol content to .1 0. (The legal limit is .8 to .10 depending on the state.) Fact 6. When the blood alcohol content reaches .10 the average drinker will experience blurred vision, slurred speech, poor muscle coordination, and a lack of rational judgment. Fact 7 It takes about one hour to eliminate one-half ounce of alcohol.