Doing the Math on Teacher Pensions: How to Protect. Teachers and Taxpayers. Do the math on teacher pensions and it just doesnât add up. In 2014 teacher pension systems had a total of a half trillion. dollars in unfunded liabilities â a debt load that climbed more than $100 billion in just the last two years. Across the.
1 These prices can double for a roadway-quality driveway (geotextile fabric covered with three layers of compacted gravel, each about 3-4 thick), or $450 -$1,800 for 12'x25' and $11,000 -$60,000 or more for a driveway 12' wide and a quarter-mile long. A cubic yard of driveway-grade crushed gravel costs about $10 -$60 or more, depending on whether it is picked up by the customer at the gravel yard or delivered to the job site, and the size and type of gravel used.
1 A cubic yard of gravel (weighing roughly 1.2 to 1.7 tons) costs about $10 -$90 or more if hauled away by the customer, or $20 -$120 or more delivered. A gravel path can cost $100 -$1,000 for do-it-yourself materials, or $300 -$2,000 or more with professional installation. 2  Complete installation of a gravel driveway starts at roughly $0.75 -$3 or more a square foot, or about $300 -$1,000 for a 12'x25' single-car driveway, 4-8 thick.