Frequency will vary. 20-30+ years. After the initial build in any brick, block or stone building or structure the mortar will last quite a while. Especially if it has been maintained by way of spot tuckpointing and a quality masonry sealer is applied as often as necessary.
To become a CEO, you will most likely need a minimum of a bachelor's degree and an extensive amount of work experience in the industry that you want to work in.You'll also need managerial experience.he Master of Business Administration (MBA) can be helpful for becoming a top executive within a large corporation. MBA programs often contain an internship or capstone project, which can provide much-needed work experience.
Graduates with a bachelor's degree in economics will find they are employable in a range of occupations, including leadership positions. In a 2006 study, researchers at Bentley University in Waltham, Massachusetts, found these graduates are more likely than any other major to become the CEO of an S&P 500 company. bachelor's degree is the minimum requirement for this position, most economists continue their education and earn advanced degrees. According to the Bureau of Labor Statistics, the median wage of economists in the U.S. in 2011 was $89,450.