Salary. During residency training, an OB/GYNâs annual salary may range from $45,000 to $60,000. Salary will increase with each year of training. After residency is completed, the starting salary is generally between $200,000 and $250,000 per year.alary. During residency training, an OB/GYNâs annual salary may range from $45,000 to $60,000. Salary will increase with each year of training. After residency is completed, the starting salary is generally between $200,000 and $250,000 per year.
copper and steel metal roofing is typically made of galvanized or stainless steel sheeting but copper sheets and tiles are also available the cost of a steel roof depends on the sheet profile the finish applied and the size and shape of your roof but offer excellent durability with a lifespan of 50 years or more copper offers an old world appeal to your roof as it ages to a pale green patina and can last up to 100 years
1 Expect to pay more for a premium, long-life product. 2  Architectural asphalt -- These products last about 30 years on average.  Wood shingles and shakes -- Wood roofing has a target lifetime of 30 years, but it can last much longer under moderate weather conditions.