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MA Hoisting 2A study material Questions and Answers fully Solved
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MA Hoisting 2A study material
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MA Hoisting 2A study materialSwing Gear - answer Attaches the main frame to the car body. Allowing the mainframe
to rotate independently of the undercarriage.
Swing Motor - answer Allows mainframe to rotate 360 degrees independent of track
direction or equipment movement
Rotary Manifold - answer Directs hydraulic oil to the track motors to allow the tracks to
function independently while the main frame is in any position
Front Idler - answer Cushion the machine from shock when digging and should be
positioned at the front / at the hole when digging. Maintains tension on the track rails
Track Rails – answer A series of links, pins, and bushings onto which the grouser pads
are bolted
Grouser Pads – answer Devices intended to increase traction. Wider pads decrease
ground pressure. Narrow pads increase traction.
Dig Safe notice - answer72 Hour minimum
30 Days maximum
permit required indefinitely unless a break in work
Minimum distance you must keep from digging from a known utility - answer18 Inches
Dig Safe Regulations - answer220 CMR 99
Red - answerElectric
Yellow - answerGas, Oil, Steam
Orange - answerCommunications
Blue - answerPortable Water
Purple - answerReclaimed Water
Green - answerSewer/ Drainage
Pink - answerSurvey Marks
, White - answerProposed excavation
Centerline Method - answerType of Material
Change in direction
Terminus point
The width (if greater than 2 inches)
Who / What is excluded form digsafe - answerPrivate companies and City / Town lines
are not required to participate in digsafe . Contractor / you are responsible for finding
and marking the private lines in the worksite
Dig Safe Safety Zone - answerWithin 18 width of the line which is color coded. Hand
digging only in safety zones.
Shoring - answerAddition of rigid material to support dirt walls
Trench - answerA hole that is deeper than it is wide, but, no more than 15 feet wide at
the bottom.
Protection is required on trenches greater than ___ feet, maybe less depending on soil
conditons. - answer5
Trench Law aka Jackies law - answer520 CMR 14:00
Permit required on trenches greater than ___ feet - answer3
Never start an engine while __________________________________ -
answerStanding on the ground
When a piece of equipment is no longer in use, - answerLower all moving parts, booms
and implements, to the ground
To prevent an equipment run away accident, always try to ______________________,
___________________________, and ________________________. - answerpark on
level ground, place transmission in neutral, and set parking brake
Proper way to enter / exit a piece of equipment - answerAlways use 3 points of contact
with steps, hand rails, and feet.
When entering / exiting a piece of equipment, never - answerJump on or off the
machine
Use steering wheel or any hand controls as hand rails
Try to enter or exit a moving machine
Is it a requirement to wear a seatbelt - answerYes, if equipped with ROPS
No, if not equipped with ROPS
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