Bologna is home to numerous prestigious cultural, economic and political institutions as well as one of the most impressive trade fair districts in Europe. In 2000 it was declared European capital of culture and in 2006, a UNESCO âcity of musicâ.ologna is also one of the wealthiest cities in Italy, often ranking as one of the top cities in terms of quality of life in the country: in 2011 it ranked 1st out of 107 Italian cities.
Add topsoil to achieve a total topsoil depth of 10-15 cm (4-6 inches), after firming. The topsoil should be a loamy sand, sandy loam, clay loam, loam, silt loam, sandy clay loam or other soil suitable for the area.
Confidence votes 270. That depends That depends upon how deep the soil bed is and how much moisture is in the topsoil. But here are some ballpark numbers for you: A yard of soil will cover a 10' by 10' area to a depth of three inches. In other words, figure a third of a yard per 100 square feet for every inch of depth.Length x width x # of inches deep divided by 324 = the number of cubic yards needed for that task.o, for example, if you are using 3 of topsoil over 880 square feet then your calculation would be: 880 times .25 (3 = .25 feet) = 220 cubic feet (divided by 27--there are 27 cubic feet in a yard) equals 8.15 cubic yards.