As a benchmark, one inch of solid wood has an R-value of 1. In comparison, an inch of blown fiberglass insulation has an R-value of 3.1 - 3.4 and an inch of blown cellulose in an attic has an R-value of 3.2 - 3.7. Along with knowing the R-value of a particular insulation, it is also important to calculate the R-value of a total system.
54 MARTA Employee Salaries. MARTA employees earn $41,500 annually on average, or $20 per hour, which is 38% lower than the national salary average of $61,000 per year. According to our data, the highest paying job at MARTA is an Electronics Technician at $41,000 annually while the lowest paying job at MARTA is a Bus Operator at $32,000 annually. Advertisement.
Salary Outlook. According to the BLS, the median annual salary for a transit and intercity bus driver was $36,700 in 2013. The best-paid drivers made $60,960, while the lowest-paid made approximately $21,170. The highest-paid in the profession work in San Jose, California; Santa Cruz, California; and Chicago. School bus drivers earn less than transit and intercity bus drivers, with a median salary just over $28,000 per year.