pavement management, pms, asset management, road maintenance planningfinal ho

Design and Implementation of Road Maintenance Reform. Republic of Moldova

Hamid Zarghampour2010-11-26

Moldova

Planning using HDM


Asset Management today Set Goals and Objectives Collect Inventory and Condition Data Rates of Deterioration Performance Standards & Measures Life-Cycle Cost Analysis Investment Strategies Programs, Projects, and Practices Monitoring Feedback and Adjustments


For any kind of planning (programme, Project)!

We need Data/Information:

Road Network

Work standards

Traffic data (Vehicle Fleet)


Before 1 December 2010 We need

- More than 1? If so:- SPECIFY

- Visualizing section’s conditions- Map (GIS)

-Verify -Cost estimates-Maintenance activities

-Routine-Periodic

- Rehabilitation- Terminology

- VF available- Previous studies?

- Purchase of new traffic counter will be recommended


GISData collection

Evaluation

0-500 500-1500 1500-40004000-7000 7000-0

20

40

60

80

100

120

Systems

Asset EvaluationCost-BenefitsMinistry, RA, RU

Condition Data and analysis

Visual inspections


Condition Data and analysis

Need for Inspection Manual- Course will be recommended

IRIPurchase of newequipment will be recommended-For this study:- 900 km of:-National and Secondary roads

- HDM 4- Purchase will be recommended

- Overview next week:- Programme- Project

− Modelling RN− Review results− Writing report

Next week

Script for selection of Homogenous sectionsis available


Information, Data What kind of information do we need?

It is always dependent on: What decisions do we need to make? What information/data are required to make these

decisions? Can we afford to collect the data? If it needs updating, can we afford to keep data current over

time?

Guiding Principle Collect only the data you need! Collect it only when you need to! The level of detail should be appropriate for the decisions

being made: Network level data for network level analyses project level for project level analyses


Calibration of Condition DataFor Program Analysis

STEP BY STEP


What to be Calibrated?

Distress Mode

All Structural Cracking

(%)

Wide Structural Cracking

(%)

Transverse Thermal Cracking

(%)

Ravelling (%)

No. potholes per km

Edge break (m² per km)

Mean rut depth (mm)

New 0 0 0 1 0 0 2

Good 5 0 0 10 0 10 5

Fair 15 9.5 0 20 5 100 15

Poor 20 15 0 25 20 200 20

Bad 25 19 0 30 50 300 25


How to calibrate?

1. Select Sections in different condition– Good to Bad using data in existing PMS– Use Agreed criteria for IRI:

Road Class

Paved Roads Unpaved Roads

Good Fair Poor Bad Good Poor Bad National Roads 4 6 8 >8 - - -Secondary 5 7 9 >9 6 8 10


2- Inspect selected section in different condition as follows:a) Randomly choose 3 sections of

100 mI. Each section has to be marked

GPS, or other means

b) Use inspection manual, describe distresses

c) Fill the protocol for each section of 100I. Severity II. Propagation of distresses

d) Estimate distresses severity and propagation and calibrate HDM4 configuration


2. Inspection Manual Shall contain the following

1. Definition of different distresses– Cracking along wheel patch– Alligator cracking– thermal Cracking, etc…

2. Severity– Rutting:

– S1 < 10 mm– S2 >10 and < 20 mm– S3 > 20 mm

3. Propagation/distribution/Spreading – Local < 10% of the total

section’s length– Moderate > 10% <50% of the

total section’s length– General > 50% of the total

section’s length

4. Method of measurement5. Protocol for inspection

(papers or digital)

Exam

ple

Exam

ple

Exam

ple

Exam

ple


Inspection Manual

Recommendation

1- Study Existing Manual,

2- Identify described distresses in the existing manual and compare with default distresses in HDM4

3- Prioritize which distresses can be measured today

4- Method of measurements for each distresses


Data collection for Project analysis

For Project analysis we need detailed data

Working only on the section o be repaired

Identifying distresses following the Inspection manual Exa

mple

Project 2 km

Section A

-B

pavement management, pms, asset management, road maintenance planningfinal ho

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