3 cubic yards of topsoil is about the size of a pickup truck bed, heaped. When poured into a loose pile, it measures 9.6 ft wide and 3.36 ft tall.

Volume
3 cubic yards
3 yd³ (2.29 m³)
about the size of a pickup truck bed, heaped
Topsoil typically ranges 1–1.4 g/mL depending on how it's packed. A firmly packed scoop weighs more.