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Weighing and Marking | Up
Equipment Operator Advanced - Advanced construction equipmet operators manual | Next
Figure 2-8.—Weight and balance of tracked vehicle |
Figure 2-6.-Portable scales.
Step 5.
(FAW). The
Determine the forward axle weight
FAW is the total weight reading of the
scales under each front tire. Example: The left front
tire scale reads 3,000 pounds, and the right front tire
scale reads 3,000 pounds, and the FAW equals 6,000
pounds. This “FAW” is written (FAW 6,000) on a
piece of weather-resistant material, such as duct tape,
with a grease pencil,
fender above the axle.
and attached to the vehicle
Remember, this tape must be
removed upon arrival at the site to avoid the removal
of the paint on the vehicle.
Step 6. Determine the intermediate axle weight
(IAW). The IAW is the total weight reading of the
scales under the intermediate tires.
Follow the
procedures for Step 5 and label the reading as “IAW”
on the masking tape.
Remember, the IAW is the
weight readings of both scales added together and
recorded in pounds.
Step 7. Determine the rear axle weight (RAW).
The RAW is the total weight reading of the scales
under the rear tires. Follow the procedures for Step 5
and label the reading as “RAW’ on the masking tape.
Remember, the RAW is the weight readings of both
scales added together and recorded in pounds.
NOTE: The RAW for vchiclcs with tandem axles
is the weight of the IAW and the RAW added together
and labeled above the trunnion (fig. 2-7).
Step 8. Compute moment 1 (Ml). The formula
for M 1 is distance 1 times the forward axle weight or
D1 x FAW = M1.
Step 9. Compute moment 2 (M2). The formula
for M2 is distance 2 times the intermediate axle
weight or D2 x IAW = M2
Figure 2-7.—Marking procedures.
2-7
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