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PREPARING AREAS, USE OF GUIDE MARKERS
Every area to be plowed should be inspected before snowfall for
potential hazards. Holes should be repaired, raised manhole
covers leveled or noted and obstructions noted to prevent
damage to the plow mounting or vehicle undercarriage.
Markers or stakes with reflectors should be in position to indicate
boundaries of areas to be plowed, location of shut-off valves,
catch basins and other hazards. Markers should be at least three
feet above the ground; higher in areas of deeper snowfall.
The first step in organizing an efficient plan is to prepare a map
or procure a blueprint of the area. Locate and mark all utilities,
outlets, shutoffs, catch basins and possible emergency
equipment that must be reached from outside.
Figure the square footage of each area and the total area.
Especially note areas from which snow will have to be carried,
call "trapped'' areas. Although hauling is expensive, it is
necessary where piled snow would limit access. indicate clearing
priorities on your map.
This may aid you in preparing a priority plan for your clearance
operation.
KEEP SNOW UNDER CONTROL
Deep or heavy, wet snow, because of its increased weight, calls
for more skillful and powerful plowing than light powder snow.
Always plow in low gear and keep plowing. Heavy snow may
also require clearing a path or area for working room to move
snow to another area. Remember that wet snow weighs about 12
pounds per cubic foot. As it piles up in front of a snowplow
blade, the weight can quickly increase to several tons.
Where packed snow or ice must be plowed, it is sometimes
necessary to lower the cutting blade to rest directly on the road
surface. In that situation, plow in lowest gear for greatest power
to the cutting edge. This method also prevents the plow from
"climbing over" the icy surface.
If plowing very deep snow, 12 inches or more, you may have to
plow with the blade partially raised to shear off successive layers
of snow until a working area is clear. Then work small "bites" into
the edge. The "bite" depth should be inversely proportional to
the snow depth. A rule of thumb: 6 inch snow may be plowed
with the entire blade width; 9-inch snow with 3/4 of the blade
width; and 12-inch snow with only 1/2 of the width. Experience
will show what work can be done without stalling or getting
stuck.
Efficient Snow Clearance Starts with Planning