Strategy for design:
• CL smooth profile 12m and average level 10m.
• Apply slope as from airport regulation.
• Water drainage milling and paving same thickness.
• Connection shoulder water drainage
• Slope Shoulder water drainage variable
• Raise/lower milling surface respecting minimum and maximum milling value
• Pave in parallel constant thickness
Benefit of working in differential milling thickness milling and constant fixed paving thickness:
• Better control of quantity
• Easy way to achieve good I.R.I. avoid bumping
• Easy to pave for the asphalt crew
• Avoid all the compaction issue
• Longer life for the runway wearing course
• Respect of thickness for investigation: Coring of the asphalt no penalties
Benefit of working in differential milling thickness milling and constant fixed paving thickness:
1. EGL – Milling Variable thickness
Benefit of working in differential milling thickness milling and constant fixed paving thickness:
Milling – Asphalt level constant thickness
Strategy for use a third party design:
Advantages
•Adjust the EGL scan DTM to the real elevation using a points measure by TS
•Import the design in Magnet using a DWG format
•Check the cut and fill value for the milling design
•Pave in constant thickness
Disadvantages
•No way to have a dynamic quantity control
•No way to identify the over milling and under milling areas
•No way to control the smoothness during the design
•Quality depends from the original measurement method used by surveyor.
•Long time spent in measurement to have an acceptable quality.
Strategy during the work:
• Scan and process data
• Identify by scan the pre-fill area
• Pre-fill with paver the areas
• Scan and process data
• Design using the milling to adjust all the runway
• Pave in thickness constant
• Use the sonic in 2D to maintain the thickness in the surface milled and copy the pervious pass in the junction.
Create a control points permanent pole for the base.
Best position of the base pole
1.Middle of the runway
2.Open sky
3.Not close to the edge
4.Easy to reach
Create a control points permanent pole for the base.
Measure the point with Total Station
1.Same coordinate system of design or conventional measurement
2.Hight accuracy measurement part of the points used for resection
3.Two control point for resection close to the base point
Create a control points permanent pole for the base.
A good quality base point gives always benefits:
•Good quality of the scan
•Easy to move in absolute
•Will be used in every layer
•Easy to get as-built from RDM1
Process data:
Using base ccordinates measured by Total station UTM coordinates to process trajectory data.
Move the scan and design in absolute:
Use the Total Station to measure some points in the EGL
Upload the points in the TN3 in Magnet
Using the cut/fill value in the points
Calculate the delta
Move the DTM and design with same calculate offset
Every layer from now will have the same offset
You can calculate as built volume with RDM1 scanning every layer.
