ASWP16 Use of a Mobile Crane to Remove Trees
Crane Equipment:
The ASWP committee recommends that a load cell should be part of the mandatory
equipment of the crane. The load cell can be used to verify the load being lifted against the
estimated load to verify estimates and to ensure future loads will be adjusted accordingly. The
ASWP committee recognizes that all mobile cranes do not have load cells and that crane
operators develop a sense of what the loads are based on previous work experiences
Ground personnel and Arborist on ground shall have specific training in:
Communication techniques with crane operator
Sling usage
Hazards associated with crane use and lifting heavy loads
Lifting paths including lifting near pedestrian and or traffic areas
Landing zone restrictions including releasing of loads on cranes, balancing loads on
ground to ensure they do not roll, and clean up procedures
5.0 Work Practice
The following information will provide general information that is required when working with a
crane to remove trees.
5.1 Worksite Assessment
Step Action
Determine if crane can be
used on worksite
Ensure crane can access the location (i.e. road
conditions/weight limitations, access over/under bridges etc.),
mobility within site, maintaining safe working loads at various
boom angles
There is enough outrigger room and security
Ground stability for the crane
Ensure crane setup location will provide adequate protection
from hazards such as electrical, overhead structures,
buildings, septic systems, underground obstructions and
services etc.
Ensure there is adequate space available for the crane, and
applicable, work equipment (i.e. aerial device, chippers or
trucks) to complete the work
Ensure there is adequate space for the crane and its boom to
move freely in and maintain appropriate limits of approach to
electrical apparatus
Assess tree for: rot, structural weaknesses, animal nests,
loose bark, branching characteristics and any potential
hazards for the lifting operation
Determine crane size
required
Assess weights of potential loads
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