Risk factors for falling ice:
(1) accumulation of ice (heavy wet snow, freeze-thaw cycles, etc.)
(2) sudden thaw
(3) high winds or ground vibration that dislodges the piece of ice
Risk for injury:
(1) large block of ice
(2) release from a significant height
(3) landing on head or neck
(4) hitting the eye
(5) having an accident while to dodge the falling missile
Fall from height:
(1) building
(2) glacier
(3) cliff or mountain side
where:
• 1 cubic meter of ice weighs about 1,000 kilogram
• 1 cubic foot of ice weighs about 62 pounds
kinetic energy in joules =
= 0.5 * (mass in kilograms) * ((velocity in meters per second)^2)
