a bank yard is aprox 3000 lbs. it depends on the material rock vs clay etc how much a yard of pile will weigh but rule of thumb is about 8 percent less.
Depends on the soil... Concret , for example weighs about 140lbs/FT3 27 CF/CY so a CUYD weighs 3,780lbs Soil can weigh 3,00lbs/CUYD or as little as half that