rigging 3 Flashcards
a sling placed in a choke configuration is good for about half the weight of the same sling placed in a
vertical configuration
a sling placed in a basket configuration is good for about twice the weight of the same sling placed in a
vertical configuration
3 types of slings
synthetic, wire rope, chain sling
weakest sling configuration
choker
strongest sling configuration
basket
sling configuration for setting poles
choker
using multiple slings for a vertical configuration is a
bridle type configuration
slings with missing or illegible name tags must be
immediately removed from service
iwrc stands for
independent wire rope core
eip stands for
extra improved plow steel
chains used for lifting, rigging, or hoisting must be a min of
80 alloy chain
shackle used for attaching or joining hardware such as insulator assemblies to structures
material shackle
shackle used to join slings, provide effective means of choking slings, or provide attachment points for rigging purposes
rigging shackles
when using a rigging shackle choker configuration, always rig the
eye end of the sling to the shackle pin and the running end through the shackle body
sling length weight
—————- x —————— =
sling height # of slings
sling tension
p.t.o. is?
power take off
on a incline spoils are stored?
uphill
what configurations are digger derrick turrets mounted in?
rear center, forward center, corner mount
the boom is strongest when it is
fully retracted and at the highest possible angle
actual lift capacity is defined by what three factors
the stability of truck, the manufactures imposed lifting limitation, the physical position of the boom
the vertical distance the sheave is from the height of the turret base
sheave height
the horizontal distance the hook is from the center of the turret
the hook radius
