E3 Flashcards
what must be done if a load, being lifted accidentally comes in contact with the book of a crane?
the crane need to be inspected
How long can a suspended load be left on a hook while the operator is not at the control’s?
not aloud
in what situation is acceptable forms worker to ride a load?
not aloud
What’s the min clearance required while working around a 100,000 volt power line
4.5m or 15feet
What’s the minimum clearance required while working around a 200,000 volt power line
4.5m or 15ft
describe “centre of gravity”
point of balance
Where should the slings attach to the load, in relation to the centre of gravity?
equal distance to or above point of balance
Where will a loads centre of gravity be positioned after it is lifted off the ground? does the position of the centre of gravity depend on how the loads rigged?
down and no It doesn’t
turnbuckles are used to adjust then length of slings so that loads can be lifted
in a level position
turnbuckles are used to adjust then length of slings so that loads can be lifted
in a level position
the screw threads at each end of a turnbuckles sleeve must be ?
left handed at one end and right handed at the other
shoulder type eye bolts and able to withstand pulls at angles no greater than
45 degrees
When several ropes are to be attached to a single hook, make the connection to the hook using a
shackle
the U-bolt part of a cable clip must be installed so it bears on the
dead end of the rope
the number of cable clips required for a connection depends on the
diameter of the rope
correctly installed cable clips will reduce the break strength of wire rope by
20%
When are speaker bars used?
long loads such as gang forms, tilt up, ECT (prevents tipping and stressing)
what sling type should be used to lift 25peices of 25ft long steel pipe
double wrapped, double choker, double wrapped, double basket hitch
a pulling device that can either chain or cable is the
come-along
a apparatus capable of long, continuous lifts is the
tirfor jack
tirfor jacks can be made to travel in the opposite direction by
relocating the pipe handle in the other direction
a tirfor jack is a hoisting device which uses a
wire rope
If you overload a tirfor jack the shear pin will break off and
all load movement will stop
rollers are used
to move loads sideways
How should slings and wire rope be stored
in a dry location and off the ground
what should be done with a wire rope sling that has a kink in it?
remove from service and tag
what should be done if there is a possibility of shock loading when using a wire rope sling?
use oversized ropes
what should be done with a broken wire in a wire rope sling
work broken wire back and forth untill it breaks
what must be done with a wire rope that has been subjected to bird caging?
remove rope from service or remove undamaged section
is it safe to replace a lost pin in a shackle with a high strength bolt ?
no
is it safe to repair a slight tear in a synthetic web sling ?
no
what type of rope is suitable for use as a tag line
polypropylene
what type of synthetic fibre rope conducts electricity when it gets wet
nylon
How long should a tag line be
long enough to be safe
Where should a tag line be attached to a long load
at the end using a bowline
Where should the worker stand if they are guiding a load of trusses onto a roof
in a safe location should the load fail
the sound of light signal for “Lower” is
three bells or flashes
the sound or light signal for “stop” is?
one bell or flash
the sound or light signal for “all clear” is
4 bells or flashes
the sound or light signal for “raise” is
two bells or flashes
What type of foot wear must be worn during material handling?
csa approved steel-toed work boots
What type of gloves are not considered safe for handling materials
gauntlet type gloves
when a crane starts taking up the slack in the slings around a load avoid
getting your fingers pinched
when moving a suspended load without a tag line
guide and follow the load
how should loose material be stored
blocked, banded together or in bins
when rigging loose bundles of round stock use
double wrapped basket hitches
tag line should be used to control loads because they allow control from
a safe distance
padding should be applied to all loads that have
sharp corners
when using cranes or hoists to roll or turn heavy structural shapes you must avoid
violent movements
if you are using cross sticks to stabilize a pile you must place the cross sticks directly over
existing cross sticks
when lifting with a sling, you must make sure that the sling is long enough so that the angle formed by the sling from the horizontal is greater than
60 degrees
