ice
- properties
- compression strength
- coef. of friction
- .0050 to .015 -- pounds of drag per pound of load
- with snow cover it is much higher
- density
- types
- hard black ice
- 8 deg F to 20 deg F
- 20 deg F to 33 deg F
- 34 deg F to 36 deg F
- snow ice
- 8 deg F to 20 deg F
- 20 deg F to 32 deg F
- 33 deg F to 38 deg F
- shell ice
- slush ice
- snow cover
- light fluff - less than .2 inches
- light density snow less than .5 inches
- light density snow - .5 inches to 2.0 inches
- moderate density snow - .5 inches to 1.5 inches
- hoar frost or rime ice
