of overlap to cover this area.

The flanges on the rear wheels are aligned to fall exactly

in. between those on the front wheels, providing full

coverage on each pass. The two wheels compact a total

of 76 inches (193 cm) of width with 30 inches (76 cm)

between, allowing the operator 8 inches (20 cm)

Hourly production is based on one machine pass, and ideal

conditions at 100% efficiency.

To determine cubic yard per hour production at speeds and

To determine actual cubic yard per hour production,

lift thickness other than those listed above, refer to the

divide the above figures, by the number of machines

passes required to achieve the desired density.

following equation.

SPEED LIFT

SPEED LIFT

(km/hr.) x 19,3 x (cm) = m3/hr.

(M.P.H. X 103 X (IN.) = cu. Yd./hr.

NUMBER OF PASSES

NUMBER OF PASSES

definite height for a number of blows, usually 25 times the

The K300 is equipped with a power shift transmission.

number of layers. The Standard Proctor uses three layers, a

This means that the operator is able to start in a low gear

5.5 pound (2,5 kg) rammer, and a 12 inch (31 cm) drop

and shift to a higher speed range without slowing down.

applying a 12,375 ft-lbs of compactive effort. The Modified

When rolling resistance is high, or the machine is

Proctor uses five layers, a 10 pound (4,5) rammer, and 18

climbing an incline, a lower gear will often produce a

inch (46 cm) drop for a total of 56,250 ft-lbs of compactive

higher speed. The operator will be aware of this if he

effort. Obviously, the Modified Proctor density speci-

notices a slowing down after shifting to higher gear.

fications are much more difficult to meet.

The dozer blade on the K300 should not be used for

excavating or heavy dozing of undisturbed soils. Its

proper function is in leveling off irregularities in grade left

In-place soil density determination consists of removing a

by the earth-moving equipment and knocking down piles

sample of the compacted soil from a 4 to 5 inch (10 to 12,7

of truck-dumped fill material. It is also very helpful in

cm) diameter hole. The moist soil is weighed and its

leveling off and back-dragging the fill to minimize water

moisture content determined. The volume of the hole is

penetration.

determined by measuring the amount of material of known

weight required to fill the hole. This may be either water or

sand and thus the name of the test. The dry weight of the

material removed is then stated in pounds per cubic foot

(kilograms per cubic meter).

The generally accepted standards for the control of

densities and moisture in soil compaction are the

Standard and Modified Proctor. A container of known size

An instrument is used employing gamma rays which are

is gradually filled with a stated number of layers of soil

and a rammer of known weight is dropped from a

the soil moisture,

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