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# Stockpile Volumes

## Volume of natural stockpiles - cubic feet, yard, metre and decimetre

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/ft3 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.

diameter (m, ft)

height (m, ft)

density (kg/m3, lb/ft3)

### Calculator - Volume of a Rectangular Pile

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

width (m, ft)

depth (m, ft)

height (m, ft)

density (kg/m3, lb/ft3)

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Temperature

oC
oF

Length

m
km
in
ft
yards
miles
naut miles

Area

m2
km2
in2
ft2
miles2
acres

Volume

m3
liters
in3
ft3
us gal

Weight

kgf
N
lbf

Velocity

m/s
km/h
ft/min
ft/s
mph
knots

Pressure

Pa (N/m2)
bar
mm H2O
kg/cm2
psi
inches H2O

Flow

m3/s
m3/h
US gpm
cfm

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