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 .
Step 4. Multiply the cost per ounce of liquor by the amount added to each drink. You'll need to estimate your liquor cost for each and every drink you serve. If you're pouring one ounce of vodka in your screwdrivers, your liquor cost per drink for a $30 bottle of vodka is 0.91 cents.tep 5. Multiply the liquor cost by four or five to establish the price of the drink. Again, the amount of profit you desire for each drink is determined by you as a bar owner or manager. To earn a 75 percent profit on each drink, multiply your liquor cost by four.