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Old 01-11-2010, 02:52 PM   #17
hazelnut
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Default Found this for you

Description and thickness1
Strength
Other
clear blue ice, < 3” thick
Unsafe, can break anytime under the weight of an average person
Do not traverse
clear blue ice, 3-5” thick
Capable of holding up a human
Groups should spread out as traveling together will stress the ice
clear blue ice, < 6-8” thick
Capable of supporting a group of people or equipment like a ski mobile
Minimum thickness needed for group activity
clear blue ice, < 8-12” thick
Capable of holding the weight of a car, but why risk it
A car creates a pressure wave a when it crosses the surface of the ice. If the water is four feet deep driving any faster than 9 mph could shatter the ice around you
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