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MA Hoisting 2A study material Exam Questions and answers
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MA Hoisting 2A study material Exam Questions and answers
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MA Hoisting 2A study material ExamQuestions and answers
Swing Gear - -Attaches the main frame to the car body. Allowing the
mainframe to rotate independently of the undercarriage.
-Swing Motor - -Allows mainframe to rotate 360 degrees independent of
track direction or equipment movement
-Rotary Manifold - -Directs hydraulic oil to the track motors to allow the
tracks to function independently while the main frame is in any position
-Front Idler - -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 - -A series of links, pins, and bushings onto which the grouser
pads are bolted
-Grouser Pads - -Devices intended to increase traction. Wider pads decrease
ground pressure. Narrow pads increase traction.
-Dig Safe notice - -72 Hour minimum
30 Days maximum
permit required indefinitely unless a break in work
-Minimum distance you must keep from digging from a known utility - -18
Inches
-Dig Safe Regulations - -220 CMR 99
-Red - -Electric
-Yellow - -Gas, Oil, Steam
-Orange - -Communications
-Blue - -Portable Water
-Purple - -Reclaimed Water
-Green - -Sewer/ Drainage
-Pink - -Survey Marks
, -White - -Proposed excavation
-Centerline Method - -Type of Material
Change in direction
Terminus point
The width (if greater than 2 inches)
-Who / What is excluded form digsafe - -Private 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 - -Within 18 width of the line which is color coded.
Hand digging only in safety zones.
-Shoring - -Addition of rigid material to support dirt walls
-Trench - -A 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. - -5
-Trench Law aka Jackies law - -520 CMR 14:00
-Permit required on trenches greater than ___ feet - -3
-Never start an engine while __________________________________ - -Standing
on the ground
-When a piece of equipment is no longer in use, - -Lower all moving parts,
booms and implements, to the ground
-To prevent an equipment run away accident, always try to
______________________, ___________________________, and
________________________. - -park on level ground, place transmission in
neutral, and set parking brake
-Proper way to enter / exit a piece of equipment - -Always use 3 points of
contact with steps, hand rails, and feet.
-When entering / exiting a piece of equipment, never - -Jump on or off the
machine
Use steering wheel or any hand controls as hand rails
Try to enter or exit a moving machine
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