Description

Two or more heavy loads traversing ice need to be kept a distance apart. The distance between loads varies with the ice quality, weight and weight distribution.


 

NOTE: The following table assumes that loads are of equal weight and that the ice is good with a thickness appropriate to the load.

Weight in Tons

Minimum Distance Between Loads in Feet

0.1

17

1

34

2

48

3

58

4

67

5

75

10

106

20

149

30

183

40

211

 

People walking on ice should keep at least 10 feet apart.

 

distance in feet between loads =

= 100 * (minimum thickness of ice for load) / 12 =

= 100 * 4 * SQRT(tonnage) / 12 =

= 33.33 * SQRT(tonnage)

 

The data in the table can be modeled in a number of ways in Minitab.

 

distance in feet =

= (0.3671 * ((SQRT(tonnage))^2)) + (30.37 * (SQRT(tonnage)) + 5.139

 

distance in feet =

= (14.22 * ((LOG10(tonnage))^3)) + (26.14 * ((LOG10(tonnage))^2)) + (30.51 * (LOG10(tonnage))) + 35.43

 

Limitations:

• These distances do not apply if traveling near a large opening in the ice.

• A person traversing ice should always be observing the ice for early signs of failure.

 


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