How to Calculate Asphalt Tonnage Using the same calculation, a 50-inch roll would yield 12.51 square feet per yard. Now that you know how many square feet are in a yard, just multiply the number of square feet per yard by the number of yards you purchase to figure the square footage of...
These emission factors must then be inflated by the coal plant net conversion efficiencies to account for the increased tonnage of coal required to produce each MWh of electricity. For example, using the average emission factor of 18 kg CO2e/MWh and an average value for net efficiency of 30%...