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# Stockpile Volumes

Volumes of natural stockpiles:

• 1 ft3 = 0.02832 m3 = 28.32 dm3 = 0.03704 yd3
• 1 ft (foot) = 0.3048 m = 12 in = 0.3333 yd
.

Download and print Stockpile Height vs. Diameter and Angle of Repose Chart

### Mass of a Pile

The mass of a pile can be calculated as

m = ρ V                              (1)

where

m = mass (kg, lb)

ρ = density of the volume in the pile (kg/m3, lb/ft3 )

V = stockpiled volume (m3, ft3 )

For density - be aware of the bulking factor for the stockpiled material.

### Example - Stockpiled Anthracite Coal

Anthracite coal with density 65 lb/ft 3 is stockpiled in a conical pile with diameter 30 ft and height 8 ft .

According the diagram above the volume of the pile is approximately 2000 ft3 .

The total mass of the pile can be calculated as

w = (65 lb/ft3 ) (2000 ft3 )

= 130000 lb

.

### Calculator - Volume of a Coned Pile

The calculator below can be used to calculate volume and mass of a coned pile.

### Calculator - Volume of a Rectangular Pile

The calculator below can be used to calculate volume and mass of a rectangular pile.

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