In 2011, nonresidential building construction provided almost a quarter of the 195,000 jobs for contractors, with average salaries at $45.41 per hour, or $94,450 per year. Building equipment contractors contained 14 percent of the positions at a mean $46.52 per hour, or $96,750 per year.
Burps can also be caused by drinking carbonated beverages, such as beer, soft drinks, energy drinks, and wine in which case the expelled gas is primarily carbon dioxide from the drink itself. Common diabetes drugs metformin and Byetta can cause burping, especially at higher doses. This often resolves in a few weeks.
Causes of constant burping can range from very benign conditions such as swallowing of air to life threatening ones such as gastric cancer. Here lists some possible causes of constant burping. One of the most common causes of constant burping is swallowing of air, also known as aerophagia in medical parlance. Aerophagia or swallowing of air tends to occur when you drink aerated drinks or eat too fast. Aerophagia also occurs when you drink liquids with the help of a straw.