EP 1110-1-8
(Vol. 7)
31 July 03
APPENDIX C
GUIDE FOR SELECTING OPERATING CONDITIONS (Continued)
EQUIPMENT TYPE
AVERAGE
SEVERE
L35:
Loaders, Front End
Bank excavation,
Loading shot rock,
Crawler Type
intermittent ripping,
cobbles, glacial till, and
basement digging of
caliche; steel millwork; high
natural bed clays, sands,
density materials in
silts, and gravels; some
standard bucket;
traveling; and steady full
continuous work on rock
throttle operations.
surfaces; large amount of
ripping of tight rock
materials; high impact
conditions; and saltwater
environment.
Depreciation Period:
10,000 hours
8,000 hours
L40:
Loaders, Front End
Continuous truck loading
Loading shot rock (large
Wheel Type
from stockpile; low to
loaders); handling high
(does not include
medium density materials
density materials with
skid steer and tool
in properly sized bucket;
counterweighted machine;
carriers)
hopper charging in low to
steady loading from very
medium rolling resistance;
tight banks; continuous
loading from bank in good
work on rough or very soft
digging; and load and carry
surfaces; load and carry in
on poor surfaces and slight
hard digging; travel longer
adverse grades.
distances on poor surfaces
with adverse grades and
saltwater environment.
Depreciation Period:
9,250 - 13,500 hours
8,750 - 12,000 hours
L45 and L50:
Loaders with Backhoe
Utility applications in
Production applications or
Crawler Type and
medium to heavy soil;
digging in rock; regular use
Wheel Type
occasional use of constant
of constant flow
flow implements and dig
implements; and dig
depths to 3.05 meters
depths over 3.05 meters
(10 feet).
(10 feet).
Depreciation Period:
8,000 hours
6,000 hours
C-4
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