EP 1110-1-8
(Vol. 9)
31 July 03
APPENDIX C
GUIDE FOR SELECTING OPERATING CONDITIONS (Continued)
EQUIPMENT TYPE
AVERAGE
SEVERE
T20:
Production dozing in rock;
Production dozing, push
Tractors
push loading in rocky,
loading in clays, sands,
Wheel Type (Dozer)
boulder strewn borrow pits;
silts, loose gravels; and
high impact conditions; and
shovel cleanup.
landfill compactor work.
13,000 hours
14,000 hours
Depreciation Period:
T30:
Working in gravels and
Working in sands and silts
Trenchers
abrasive materials at or
below rated capacity of the
Chain and Wheel
above the rated capacity of
machine.
Type
the machine.
6,000 hours
8,000 hours
Depreciation Period:
T45 and T50:
Consistently poor road
Varying loading and road
Truck Trailers
conditions; and oversized
conditions; and typical
Trucks, Highway
loading equipment.
construction use on a
variety of jobs.
6,500 - 10,000 hours
8,000 - 12,000 hours
Depreciation Period:
C-7
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