Deighton User Group Conference Bowmanville, 1014 July, 2000 - PowerPoint PPT Presentation

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Deighton User Group Conference Bowmanville, 1014 July, 2000

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Drove pragmatism very hard. Maintained simplicity. e.g. ... Progress not perfection (pragmatism) Keep it simple. Success if RESURFACING predicted in Y10 ... – PowerPoint PPT presentation

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Title: Deighton User Group Conference Bowmanville, 1014 July, 2000


1
Deighton User Group Conference Bowmanville,
10-14 July, 2000
  • New Zealand National Implementation of dTIMS
  • Our Approach and Experiences

Gordon Hart Maintenance Engineer Transit New
Zealand, NAPIER
2
Coverage
  • Background
  • Integrated Business Systems
  • Project Objectives
  • Project Development
  • Project Management
  • Implementation
  • Project Deliverables
  • Where we are up to
  • Some things we have learned
  • Some things we need

3
Background
4
New Zealand ?
  • All of the graphic files
  • removed to make the
  • presentation small enough
  • to email

5
Unique Asset Management Challenges
6
New Zealand Roading Assets
The public road network in New Zealand would wrap
around the world 2 ¼ times
We are dealing with a substantial network
7
An issue of scale
Many roads Small population Leads to Thinly
distributed income
8
New Zealand is
  • Geologically VERY young
  • Many difficult soils
  • Geologically VERY variable
  • Many different subgrade conditions
  • Many different construction materials
  • Environmentally variable
  • Many different climatic zones

A modelling nightmare
challenge
9
New Zealand Roads
  • Lightweight, low strength pavements
  • Lightly trafficked
  • Crushed rock chip sealed pavements that are very
    sensitive to moisture content
  • Timely and regular maintenance is required to
    avoid the need for disproportionate future
    expenditure

10
Roading Administration in New Zealand
11
State Highway Management Structure
One of 74 RCAs
Responsible for road funding
Responsible for management of State Highways
12
RCA Development Cooperative
Asset Management Systems and best practice
  • State Highways
  • Transit New Zealand
  • RIMS Group
  • Roading Information Management Systems Best
    Practice Group
  • Local Roads
  • 74 Road Controlling Authorities

Appointed Representatives
13
Delivery (Acquisition)
  • Traditional
  • PSMC

14
Some ingrained NZ Asset Management Principles
(that we have had to comply with)
15
Economic Imperatives
  • Economics rules
  • Economics rules
  • Economics rules

16
Investment Criteria
  • Benefit-Cost Ratio
  • Differential in user costs
  • Divided by
  • Differential in capital costs
  • Offset by maintenance cost differential
  • Net Present Value
  • Not targeting user benefits
  • BUT
  • Agency costs would be reduced by the application
    of investment

More than 70 of the national State Highway
programme is subject to some form of benefit cost
analysis
17
Competing Initiatives
  • Service Level
  • Maximise condition
  • Minimise user costs
  • Cost Effective Life Cycle
  • Minimise agency costs
  • Minimising the total ownership costs accrued over
    the life of the asset

We were lucky! Ideally suited to TTC analysis
18
Routine Maintenance
  • Do nothing is NEVER an option
  • In international terms, New Zealand employs a
    very high standard of routine maintenance
    intervention
  • If it breaks, we fix it
  • Deterioration is disguised
  • Do minimum is the least cost option required to
    maintain the service level

19
Treatments, Triggers and Resets
Decay in Condition (DETERIORATION)
EXCELLENT
Condition Improvement (RESET)
ASSET CONDITION
Minimum Acceptable Standard (TRIGGER)
Treatment Applied
POOR
TIME
20
Maintenance Cost Management
AWT/Routine Maintenance ECONOMIC BREAK POINT
COST DEVELOPMENT CURVE
THESE COSTSAREAVOIDED
per KILOMETRE
HOLDING MIS APPLIED
OPTIMAL INTERVENTION POINT
TIME
21
ExistingInventory(about 12 years old)
22
Existing Inventory - RAMM
  • Assets
  • Pavement Structure
  • Surfacings
  • Shoulders SWC
  • Signs
  • Culverts
  • Minor Structures
  • Markings
  • Railings
  • Traffic Facilities
  • Features
  • Condition
  • Roughness
  • Rutting
  • Shoving
  • Texture
  • Scabbing
  • Cracking
  • Skid
  • (Deflection)
  • Demand
  • Traffic
  • Loading
  • (Environmental)
  • Work
  • Rehabilitation
  • Maintenance Work

23
Models and KPIs
  • Complex Indices
  • Surface Integrity Index
  • Maintenance Cost Index
  • Models
  • Roughness
  • Rutting
  • Texture
  • Cracking
  • Potholes
  • Ravelling
  • Performance Indices
  • Remaining Seal Life
  • Remaining Service Life
  • (These are utilised principally to control asset
    consumption in PSMC situations.)

24
Location Reference
  • Longitudinal SH - RS - Displacement
  • e.g. 2 / 244 / 1.45

25
Treatment Length
  • The unit at which work will be executed
    (intervention applied)
  • A uniformly performing section of pavement that
    is performing differently to the sections either
    side

26
Integrated Business Systems
27
Business Practice Model
Asset Management Plan
Fund Allocation Model
28
Computer tools are only one input
Inventory and Condition Data
Optimised Work Programme
We are not trying to replace expert knowledge
29
Project Objectives
30
Principal Objectives
  • Single nationally controlled model
  • Fully integrated into accepted asset management
    systems
  • Co operative development (pool of resources)
  • Upskill the entire industry (Client, Consultant
    and Contractor)
  • Transfer ownership
  • Sustainable

31
Development Principles
  • Coordinated
  • principal consultant with key technical
    responsibility
  • Pragmatic
  • Progress not perfection
  • Simplicity
  • Keep it simple
  • Sophistication only when timely
  • Depth of the ocean not height of the waves

32
Project Development
33
Developed in 3 phases
  • Phase I
  • Preliminary System
  • First cut setup
  • Limited calibration
  • Sort data issues
  • Training
  • Motivation
  • Custom software
  • Pavement strength issues
  • Launch for familiarisation
  • Extensive documentation
  • Phase II
  • Refinement
  • Refined setup
  • Refined models
  • More calibration
  • Training
  • Documentation perfection
  • Research needs assessment
  • Support (help desk)
  • Phase III
  • Further refinement
  • Capture HDM 4
  • Ongoing support
  • Further calibration
  • Model control and audit procedures
  • Research support

34
Success Factors
  • Experienced team - drew on appropriate
    international expertise
  • Drove pragmatism very hard
  • Maintained simplicity
  • e.g. treatment strategies
  • Dr. Christopher R. Bennett.
  • Mr. Theuns Henning
  • Dr. Nabin Pradhan
  • Dr Gustav Rhode
  • Mr. Mike Riley
  • Mr. Doug Wilson

35
Development Expectation
36
Project Management
37
Functional Relationships
RIMS Group Project Owner
Transfund Policy
Deighton Ass Software
HTC Ltd Implementation
RCAs Users
Contractual
License
Sales
Functional
Support
38
Implementation
39
Software Setup
Issue We trigger all treatments on need not
strategy THEN we optimise the strategies (there
are no predefined strategies)
Performance Analysis Period
Trigger anything to satisfy standard
Performance Analysis
Economic Analysis Period
Performance Analysis Period
Economic Performance Analysis
Every treatment on every treatment length is
triggered every year
Generate only what is needed to achieve standard
?1999 RIMS
40
Typical run times
  • Years 1 to 10 every treatment in every year
  • Years 11 to 20 performance based
  • 700km
  • 1709 sections
  • generating 36 strategies per section
  • about 10 functions and resets
  • 4.5 hours to generate
  • 20 minutes to optimise
  • pentuim III 550mhz 128mb RAMM

We find this quite acceptable
41
Implementation Model
Asset Inventory (RAMM)
Ad Hoc Data (Specialised)
RIMS Standard Setup
Standardised Outputs
Strength Programme (Assign SN)
Interface Programme (Data Conversion)
Reporter Programme
Calibration Standards
dt2699 File
Locally Calibrated Setup
dTIMS Performance Economic Analysis
42
Intellectual
  • Sustainable training programme
  • Asset Management
  • Software
  • Setup
  • Data issues
  • Three tiered
  • Management - Understanding
  • Technician - Operation
  • Expert - Calibration
  • Extensively documented

43
Data
  • Conversion of existing condition data
  • Long term move to more appropriate data
  • e.g. Rutting data (length -gt depth)
  • Provision of flow charts to assess missing data
  • Focussed initially on key sensitivities

44
Strength Determination
  • Horses for courses
  • In increasing degrees of sophistication
  • Typical Pavement Design Method
  • ARRB Method
  • Benkleman Beam Method
  • CBR Layer Method
  • FWD without Layer Thickness Method
  • FWD with Layer Thickness Method
  • Software developed to ease the pain

45
Converting Data
Other Data
Strength Programme
Interface programme
RAMM
dT2699
Database
46
Project Deliverables
47
You dont have to be a rocket scientist
1.
We want the tools used as a matter of course by
the every day practitioner !
48
Industry Awareness
  • Develop life cycle asset management expertise
  • Application of the principles as a matter of
    course by the average practitioner

49
Software
Interface Software
dTIMS
Strength Programme
50
Calibrated Setup
  • Initially pragmatic
  • Ongoing refinement and calibration
  • Meeting set requirements
  • NZ economic approach
  • International state of the art
  • flexible (it can grow with us)
  • etc

51
Documentation
  • dTIMS manual
  • Three volume domestic manuals
  • Technical Reference Manual
  • How it all works
  • Software users guide
  • For the NZ software
  • Using the system and tutorials
  • dTIMS idiots guide
  • Worked examples

52
Training Package
  • Sustainable
  • Develop programme
  • Develop delivery capability
  • Delivery
  • Covers
  • Pavement management principles
  • dTIMS

53
Research Coordination
  • Identify needs
  • Vet proposals
  • Assist with steering projects
  • Support academic researchers

54
Where are we up to
55
Status
  • Most RCAs have brought in
  • Phase I delivered June 1999
  • Phase II rolling out now
  • Phase III commissioned
  • Awareness achieved (extensive training)
  • Enthusiasm abounds
  • Setup and models proving reasonable

56
Issues
  • A lot of calibration yet to pass
  • Data deficiencies yet to be corrected
  • Some knowledge yet to be gained
  • We need more days in the year

We are not there yet
57
Some things we've learned
58
(Key success factors)
Retain Reality
  • Recognise the limitations
  • Set realistic goals/expectations
  • Progress not perfection (pragmatism)
  • Keep it simple
  • Success if RESURFACING predicted in Y10
  • Its only a tool not an answer

Remember - Our profession is more artistic than
scientific
59
Calibration
60
Integration
  • Providing an integrated solution is essential
  • MUST ensure that data conversion and assignment
    of defaults is simplified

61
Some things we need !
62
Priority Enhancement Needs
  • Type A
  • Option to define which is the base strategy
  • Exclude maintenance only strategy
  • Optimisation based on IBC and NPV
  • Type B
  • Exogenous benefits for treatment types
  • Budget categories for treatments or road sections

63
Option to define the base strategy
  • Do nothing is not an option in N.Z.
  • Routine maintenance will always be executed
  • Does not affect the analysis BUT makes reporting
    cumbersome
  • Using post processing software at present (MESSY)

64
Exclude Maintenance only strategy
  • Do Nothing and Maintenance and Periodic are the
    defaults
  • MP is often more than required (low use roads)
  • Because it is automatically selected on the
    efficiency frontier it disguises treatments that
    may be more economic

65
Optimisation based on IBC and NPV
  • We cannot currently optimise on NPV
  • A network could contain both conditions
  • treatment justified by user benefits (IBC)
  • Intervention would optimise agency costs (NPV)
  • Requirement - if IBC lt limit, check for minimum
    cost strategy (present value of agency costs)

66
Exogenous benefits for treatment types
  • Similar to delay cost option
  • Need to be able to weight treatments based on
    benefits not calculated by dTIMS e.g.
  • Traffic safety
  • Environmental impacts

67
Budget categories defined for treatments or road
sections
  • Currently different parts of a network with
    different budget constraints must be treated in
    separate optimisation runs
  • For example, the urban and rural sections
    separately budgeted
  • Need to be able to define budgets for parts of
    network as well as treatments

68
Thank You
69
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