best practices for milling and profiling · milling or cold planing is the controlled cold milling...
TRANSCRIPT
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Best practices for Milling and Profiling
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What is Milling or Cold Planing?
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What is Milling or Cold Planing?Milling or Cold Planing is the controlled
cold milling of pavement to restore the surface to a specified profile. Bumps, ruts, and other surface irregularities are removed, leaving a uniform textured surface.
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Why is it needed?
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Why is it needed?
BEFORE
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Why is it needed?
BEFORE
AFTER
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3 KEY POINTS ON "MILLING SPECIFICATIONS"
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3 KEY POINTS ON "MILLING SPECIFICATIONS"
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Pattern
3 KEY POINTS ON "MILLING SPECIFICATIONS"
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PatternCross Slope
3 KEY POINTS ON "MILLING SPECIFICATIONS"
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PatternCross Slope
Longitudinal Smoothness
3 KEY POINTS ON "MILLING SPECIFICATIONS"
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What For?STANDARD MILLING
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-Removal of the existing pavement -to the desired depth
What For?STANDARD MILLING
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-To restore the pavement surface -to the specified grade and slope
-Removal of the existing pavement -to the desired depth
What For?STANDARD MILLING
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-To restore the pavement surface -to the specified grade and slope
-Removal of the existing pavement -to the desired depth
-To help improve the ride-ability -of an existing surface
What For?STANDARD MILLING
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What Equipment is needed for the job?
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What Equipment is needed for the job?
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What Equipment is needed for the job?
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What type of automatics are needed for the job?
Wire-rope sensor
Slope sensor Ultrasonic sensor
Sonic Skisensor
Rotary angle sensor
Laser sensor
3D sensor
Cylinder sensor
Control panel
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Questions that need to be answered:What is the depth at which is to be cut?What is the area in which needs to be cut?How many trucks to we have?Is there water source on site?ARE THERE ANY OBSTRUCTIONS?
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Zero point
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Starting off
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Starting off
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Loading of trucks hauling the RAP.
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STANDARD CUTTING PATTERNTRIPLE WRAP5/8” SPACING
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52 FPM 26 FPM
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131 FPM 66 FPM
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131 FPM
52 FPM
26 FPM
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Slow speed
Standard pattern
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CUTTER DRUMcomponents
LOOSE BEARING EQUALS A ROUGH GRADE
DOOR PRESSURE
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HOLDER VARIETY
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5 DEGREE SKEW
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Problems (High speed)
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What controls a good Cutter pattern ?In summary
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• Overall condition of the machineWhat controls a good Cutter pattern ?
In summary
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• Overall condition of the machine• Track pad condition
What controls a good Cutter pattern ?In summary
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• Overall condition of the machine• Track pad condition
What controls a good Cutter pattern ?In summary
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• Overall condition of the machine• Track pad condition
What controls a good Cutter pattern ?In summary
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• Overall condition of the machine• Track pad condition• Cutter drum condition and tooth
spacing
What controls a good Cutter pattern ?In summary
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• Overall condition of the machine• Track pad condition• Cutter drum condition and tooth
spacing• Cutter drum tooth holder condition
What controls a good Cutter pattern ?In summary
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• Overall condition of the machine• Track pad condition• Cutter drum condition and tooth
spacing• Cutter drum tooth holder condition• Cutter rotation speed
What controls a good Cutter pattern ?In summary
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• Overall condition of the machine• Track pad condition• Cutter drum condition and tooth
spacing• Cutter drum tooth holder condition• Cutter rotation speed• Cutter wrap
What controls a good Cutter pattern ?In summary
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• Overall condition of the machine• Track pad condition• Cutter drum condition and tooth
spacing• Cutter drum tooth holder condition• Cutter rotation speed• Cutter wrap • Grade control system
What controls a good Cutter pattern ?In summary
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• Overall condition of the machine• Track pad condition• Cutter drum condition and tooth
spacing• Cutter drum tooth holder condition• Cutter rotation speed• Cutter wrap • Grade control system• Pavement condition
What controls a good Cutter pattern ?In summary
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• Overall condition of the machine• Track pad condition• Cutter drum condition and tooth
spacing• Cutter drum tooth holder condition• Cutter rotation speed• Cutter wrap • Grade control system• Pavement condition• Ground speed
What controls a good Cutter pattern ?In summary
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• Overall condition of the machine• Track pad condition• Cutter drum condition and tooth
spacing• Cutter drum tooth holder condition• Cutter rotation speed• Cutter wrap • Grade control system• Pavement condition• Ground speed• Water for dust control and tooth
rotation
What controls a good Cutter pattern ?In summary
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• Overall condition of the machine• Track pad condition• Cutter drum condition and tooth
spacing• Cutter drum tooth holder condition• Cutter rotation speed• Cutter wrap • Grade control system• Pavement condition• Ground speed• Water for dust control and tooth
rotation• GOOD CREW!!!
What controls a good Cutter pattern ?In summary
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Fine milling
5/8” 5/16”
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1 cutting tool per cutting line 2 cutting tools per cutting line
With 1 rotation of the milling drum, 1 cutting tool cuts per each cutting line.
With 1 rotation of the milling drum,2 cutting tools are cutting per each cutting line.
20 m/min 20 m/min
¼ in ¼ in x 2
65.6 FPM65.6 FPM
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Monday, March 11, 13
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Daily Maintenance
Monday, March 11, 13
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Daily Maintenance
Cleaning of machine.
Monday, March 11, 13
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Daily Maintenance
Cleaning of machine.
Lubrication of machine.
Monday, March 11, 13
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Daily Maintenance
Cleaning of machine.
Lubrication of machine.
Tool changing.
Monday, March 11, 13
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Daily Maintenance
Cleaning of machine.
Lubrication of machine.
Tool changing.Check for leaks and repair accordingly.
Monday, March 11, 13
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Review:
* Know the job details.* Know what equipment is needed to perform job.* Know in what manner to operate equipment, and achieve quality desired.* Preventive and daily maintenance.* And most of all….
Monday, March 11, 13
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Always work safe!
Monday, March 11, 13
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Thank you!
Monday, March 11, 13