4 tons of decomposed granite is about the size of a pickup truck bed, heaped. When poured into a loose pile, it is 9.46 ft (2.88 m) wide and 3.31 ft (1.01 m) tall.

Volume
2.88 cubic yards
2.88 yd³ (2.2 m³)
about the size of a pickup truck bed, heaped
Density estimated by AI from typical values. Decomposed granite typically ranges 1.45–1.85 g/mL depending on how it's packed. A firmly packed scoop weighs more.