Solutions
A four legged bridle sling arrangement is attached to a rigid
load. How many and which sling legs would be assumed to
support the load? Correct Answers Two opposite diagonal
slings must be capable of supporting the load.
Before leaving the site what must be provided to restrict access
to the site? Correct Answers Barricades or fences
Before moving off what should be done with grounded
attachments? Correct Answers Attachments should be raised to
the correct travelling height or stowed.
Before performing the work with an excavator, what should you
do if you have not used the machine
before? Correct Answers Read the operators manual to
familiarise yourself with the machine (e.g. controls and decal
information).
Before reversing a machine what precaution should be taken? **
Correct Answers Look back over both shoulders to ensure the
path of travel is clear. Sound horn twice before moving unless
there is a reversing/motion alarm fitted.
Before reversing an excavator, what action should you take?
Correct Answers Look back over both shoulders to ensure the
path of travel is clear. Sound horn twice before moving unless
there is a reversing/motion alarm fitted.
,Describe how you would safely mount/dismount an excavator.
** Correct Answers Facing the machine use the grab-rail or
handrail and steps to mount /dismount the machine (Three
points of contact).
Describe the correct way to park an excavator. Correct Answers
Park on level ground, apply park brake or place in park, lower
bucket to ground with cutting blade resting on the ground, turn
off machine
For what reason should the key be removed from ignition of the
machine? Correct Answers To prevent unauthorised movement
From excavator load chart "Appendix A" what is the SWL to be
hoisted over the side at a radius of 3.0 metre and at a hook
height of 3.0 metres? Correct Answers 10750 kg
From excavator load chart "Appendix A" what is the SWL to be
hoisted over the side at a radius of 6.1 metre and at a hook
height of (minus) - 3.0 metres? Correct Answers 3900 kg
How are vehicles/machines stopped from coming too close to an
excavation? ** Correct Answers By using barricades and
warning signs
How do you calculate the cubic capacity of the bucket of an
excavator? Correct Answers LxWxHt / 2
How do you do you fill machine tyres with water ballast?
Correct Answers Wheel jacked up with the valve at the top of
, the wheel, fill with water to manufacturer's specifications, add
antifreeze if required and then add air pressure.
How do you select the appropriate bucket to perform the
excavation work? Correct Answers • Type of material to be
excavated
• Size of the excavation or trench to be considered
How far away from an excavation must material be dumped? **
Correct Answers Attachments should be lowered with coming
to rest no closer than 0.5 metres from the excavation
How far must people be kept away from the excavator when it is
digging? ** Correct Answers The operating radius of the
machine
How high must the bucket be kept above the ground when
driving forward? Correct Answers Only high enough to
provide ground clearance at all times.
How would you check the tension on the tracks of an excavator?
Correct Answers By placing a straight edge on the track from
the roller to the driver wheel and measuring the distance from
the straight edge to the track.
How would you dismount a machine that contacted live power
lines, which could not be released, or the power turned off? **
Correct Answers Jump well clear of machine ensuring