GPS 101 & Trimble CCS900

Compaction Control SystemMike Winsor

Keystone Precision Equipment

GPS 101• GPS Defined• Different levels of positioning

accuracy• What it means to us

GPS• 38 satellites in orbit• 11,000 miles

altitude• $13 billion

Department of Defense investment

• Department of Defense maintains and operates the system

• Available everywhere for free

Other Satellite Constellations

• GLONASS–

Owned and operated by the Russian Government

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India investing–

New SATs placed in orbit

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Solutions have become much better• Can augment GPS positioning

Types of GPS Positions

• Autonomous–

10-15m horizontal

• DGPS–

0.5 - 5m horizontal

• “Float”–

Meter to sub-meter

• “Fixed”–

1-3cm (0.03’-0.1’)

Real Time Kinematic GPS

What does it mean to us?• Allows us to measure and map

specific data in specific locations• We can measure and record the

“compaction” of material in real time with the ability to map the data such that we can return to specific locations with high accuracy

Compaction Control Technology

• Can be referred to as–

“Compaction Control System” (CCS)–

“Intelligent Compaction” (IC)–

“Continuous Compaction Control” (CCC)

• Derived from US and EU highway standards–

US DOT / Federal Highway Administration–

Germany – FDVK (Flächendeckende Verdichtungskontrolle)

–

Finland–

Sweden – ATB Väg 2004–

Austria – RVS 8S.02.6

Compaction Control Technology• Measures soil stiffness as an indication of

soil compaction

• Controls the machine compaction effort versus measurement data

• Displays compaction measurements, pass counts, provides guidance to the operator

• Maps and records compaction data

Compaction Measurement

Machine Compaction Measurement

Traditional Compaction Measurement=

CMV Relative Measure• CMV is a relative measure of soil

stiffness• CMV value is affected by a number of

variables, for example:–

Machine size–

Material type–

Material moisture–

Direction of travel–

Machine speed

• CMV represents the value across the entire drum width

Basic Compaction Control and Documentation• Provides base-level functionality• No interface to OEM on-board vibratory control

or compaction sensor systems• Uses standard Trimble GCS900 v10 components

–

No new or special hardware –

Standard system install on most OEM rollers–

Single and Dual Trimble MS990 Smart GPS+GLONASS Antennas drum mount configurations

022482-1087 – HH-Z5

Basic Compaction Control and Documentation – On-machine Software• Pass count mapping and

inspection–

View where compaction has taken place in real-time

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Data displayed in job site coordinates

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Reduces over/under- compaction of the work area

022482-1087 – HH-Z5

• Layered Lifts–

Sub-material layers compacted in lifts

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Defined in the office or cab–

Allows faster, more balanced compaction

Basic Compaction Control and Documentation – On-machine Software

• Cut / Fill Coverage Mapping–

QA / QC design grade specifications have been met, post-compaction

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Catch errors prior to the start of paving operations

022482-1087 – HH-Z5

• Productivity reporting–

Includes: • System usage• Compaction terrain logging • Machine productivity statistics

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Logged to a new *.TAG file• Replaces the *.ST file

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Analyzed in Trimble SiteVision® Office 7

Advanced Compaction Control and Documentation– On-machine Software• CMV View compaction

levels in real-time –

Detect where compaction does not meet design spec

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On-screen inspection of coverage area

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Immediate QA/QC of compaction

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Reduce use of traditional methods for validation of problem areas

022482-1087 – HH-Z5

Advanced Compaction Control and Documentation– On-machine Software• Proofing mode and

summary–

On-machine validation of final compaction runs

–

Increases the quality of the final compacted material

022482-1087 – HH-Z5

1. Strip the topsoil

• Guides the operator to the edge of strip–

No stakes required Cost reduction–

Reduces over strip Cost reduction• Not restricted to scrapers, use any machine

–

e.g. Dozer/Grader/Excavator/Scraper

2. Excavate unsuitable material

• Guides the operator to the extents of excavation–

No stakes required Cost reduction–

Reduces over excavation Cost reduction• Not restricted to Excavators, use any machine

–

e.g. Dozer/Scraper

3. Compact, validate in-situ material

• Measure stiffness using intelligent compaction–

Look for soft spots Better to sort it out now than fix later

• Record the surface–

For volume calculations –

Ensure that you get paid

4. Place a layer of imported material

• System controls grade – guides the operator–

Correct layer thickness Meets spec for compaction• As a result you get a smooth surface

–

Trucks travel faster Increase productivity–

Water runs off if it rains Less downtime

5. Compact layer of imported material

• Record the number of passes & measure density using intelligent compaction–

Documentation Verify that you meet specifications–

Look for soft spots Better to sort out now, than fix later

• Record the surface–

Calculate the volume Progress payments

6. Place the next layer of imported material

• System controls grade – guides the operator–

Reduces number of passes to grade, increases productivity–

Ensures the correct layer thickness –

Meets spec for compaction• Higher quality final product!

–

To grade with less time & effort

7. Compact the layer of imported material

• Record the number of passes & measure density using intelligent compaction–

Documentation Verify that you meet specifications• Record the final surface

–

Documentation that you have met grade requirements–

Calculate the volume Progress payment for imported material

Summary• Integrated solutions for all machines

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Reduces costs–

Increases productivity–

Reduces re-work–

Provides QA/QC–

Process Improvement

• Provides value in all phases of the project–

Stripping topsoil–

Excavating unsuitable–

Grading imported material–

Compacting imported material

Thank you