Snow and Ice Control
7
priority because of requirements on MSRs and alternate routes. Snowplowing
vehicles should be reassigned to their original routes as soon as it is feasible to do
so. Sanding can be limited to hills and intersections except when icy conditions
require sanding operations. The objective here is to provide reasonably safe
driving for a prudent driver. An acceptable accumulation of snow would be three
inches. The maximum average accumulation of snow would be five inches.
Class D
These routes are Type S under STANAG 2174 and are seriously affected by
weather. Lower traffic roads and side streets and roads and streets located in
billeting/cantonment/residential areas should be plowed continuously during
average storms if possible and practical to do so. If conditions are such that the
other classes of roads cannot be adequately maintained, then equipment assigned
to Class-D roads should be reassigned to meet the priority of other roads. The
objective here is to provide reasonably safe driving conditions as soon as it is
practical to do so. Sanding should be done only where and when needed. An
acceptable accumulation of snow on these roads is four inches. The maximum
average accumulation of snow is six inches. Such roads are considered fair-
weather roads, and if non-paved may become impassable with severe weather.
Operations
The normal material available to the various units for winter road main-
tenance includes sodium chloride (salt) and sand. These materials should be
applied as shown in the tables in Appendix A. The amounts shown are the
minimum; increasing amounts may be applied as necessary. Some units or
locations may have calcium chloride (CaCl) in liquid and/or solid form. Plowing
during snowstorms should be continuous whenever possible until the storm
abates or terminates. Upon termination of the storm, final plowing and cleanup
should take place until the objectives have been met.
Calcium chloride in liquid or solid form will not be used when temperatures
are 25 F or higher and are expected to remain there or rise. Common salt works
well in this temperature range and does not need the addition of calcium chloride
to be effective.
When the temperature drops below 25 F, salt begins to lose its effectiveness
and its action is significantly reduced. When the temperature is 25 F or lower,
liquid calcium chloride (or other anti-icer or deicer) may be added to the salt at
the rate of ten gallons per ton of salt. This increases the salt's action and lowers
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