Jackson Township
Highway Department
TEMPERATURE
EFFECT ON SALT
| TEMP FAHRENHEIT |
LBS. OF
ICE MELTED
BY 1 LB OF SALT |
EFFECTIVENESS
|
|
30 Degrees
|
46.3#
|
100%
|
|
25 Degrees
|
14.4#
|
31%
|
|
20 Degrees
|
8.6#
|
18.5%
|
|
15 Degrees
|
6.3#
|
13.6%
|
|
10 Degrees
|
4.9#
|
10.5%
|
|
5 Degrees
|
4.1#
|
8.8%
|
|
0 Degrees
|
3.7#
|
8.0%
|
|
-6 Degrees
|
3.2#
|
6.9%
|
NOTE THE LARGE DROP OF EFFECTIVENESS
FROM 30 DEGREES TO 25 DEGREES (100% DOWN TO 31%). THIS IS ONE REASON
WHY GRIT IS SOMETIMES ADDED TO SALT AS THE TEMPERATURE DROPS. GRIT THEN
PROVIDES SOME TRACTION.
|