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.
According to www.ssb.no: the average monthly income in in Norway is 35200 NoK (5904,23 $ as of 12.29.10). That number times 12 makes the annual income 70850,76 $ or 422395.8 â¦ NoK. Keep in mind that these numbers are from 2009. 3 people found this useful.hat is the average income per year in Norway?   A person with an income of 10,000 crowns ($2,700) is considered distinctly well-off; the possessor of more than this would be accounted rich even in Christiania. The a â¦ verage middle-class income in one of the provincial towns is not much over 3,000 crowns ($810).