Include the cost of gravel. For a 4-inch slab, you'll need the same amount of gravel you calculated for concrete, as the gravel bed will also be 4 inches deep. Use the same calculation to arrive at cubic yards of gravel, then multiply by 1.5 tons per cubic yard to get the number of tons you will need.
Average Iceland Salaries. The average salary for iceland jobs is $54,000. Average iceland salaries can vary greatly due to company, location, industry, experience and benefits.This salary was calculated using the average salary for all jobs with the term iceland anywhere in the job listing.verage iceland salaries can vary greatly due to company, location, industry, experience and benefits. This salary was calculated using the average salary for all jobs with the term iceland anywhere in the job listing.
The population of Iceland was estimated as 276,365 in July of 2000, with a slow growth rate of 0.57 percent. Iceland is the most sparsely populated country in Europe, with an average of 3 inhabitants per square kilometer.In 2000, the birth rate stood at 14.86 births per 1,000 population and the death rate at 6.87 deaths per 1,000 population.celand is the most sparsely populated country in Europe, with an average of 3 inhabitants per square kilometer. In 2000, the birth rate stood at 14.86 births per 1,000 population and the death rate at 6.87 deaths per 1,000 population.