Post on 20-Jul-2020
Substantial Road Capital Budget Savings
Michael Maher, Ph.D., P.Eng.
Golder Associates Ltd., Senior Pavement and Materials Engineer
Roozbeh Rashedi, Ph.D.
Infrastructure Solutions Inc., VP of Technology
1) Increasing infrastructure deficit & continuous deterioration
2) Lack of attention to preventive maintenance
3) Lack of true optimization capability at network-level analysis
4) Lack of affordable, easy-to-use, yet powerful capital planning tools
5) Lack of a full life cycle solution
Road Capital Planning Challenges
Challenge 1 - Increasing Infrastructure Deficit
Challenge 1 - Increasing Infrastructure Deficit
Challenge 2 – Attention to Preventive Maintenance
Published July 2016
Challenge 2 – Attention to Preventive Maintenance
Challenge 3 – Incorporating True Optimization
A Simple Comparison: Optimization vs. Ranking/BCA
Road
Section
Current
Condition
(PCI)
Treatment Type 1 (T1) Treatment Type 2 (T2) Treatment Type 3 (T3)
CostAfter-Repair
PCI
Benefit
(PCI Gain)Cost
After-Repair
PCI
Benefit
(PCI Gain)Cost
After-Repair
PCI
Benefit
(PCI Gain)
A 35 $1,000 50 15 $2,000 70 35 $ 3,000 100 65
B 55 $500 75 20 $1,000 90 35 $ 2,000 100 45
C 70 $500 90 20 $1,000 100 30
D 80 $200 90 10 $2,000 100 20
E 50 $800 70 20 $1,500 80 30 $ 3,000 100 50
A Simple Comparison: Optimization vs. Ranking/BCA
Road
Section
Current
Condition
Treatment Type 1 Treatment Type 2 Treatment Type 3 T1 T2 T3
Cost Benefit Cost Benefit Cost Benefit B/C B/C B/C
A 35 $1,000 15 $2,000 35 $ 3,000 65 1.50 1.75 2.17
E 50 $800 20 $1,500 30 $ 3,000 50
B 55 $500 20 $1,000 35 $ 2,000 45
C 70 $500 20 $1,000 30
D 80 $200 10 $2,000 20
Selection Treatment Cost Benefit
A 3 $ 3,000 65
Total $ 3,000 65
Solution:
Available Budget = $3,000
A Simple Comparison: Optimization vs. Ranking/BCA
Road
Section
Current
Condition
Treatment Type 1 Treatment Type 2 Treatment Type 3 T1 T2 T3Max B/C
Cost Benefit Cost Benefit Cost Benefit B/C B/C B/C
D 80 $200 10 $2,000 20 5.00 1.00 5.00
B 55 $500 2 $1,000 35 $ 2,000 45 4.00 3.50 2.25 4.00
C 70 $500 20 $1,000 30 4.00 3.00 4.00
E 50 $800 20 $1,500 30 $ 3,000 50 2.50 2.00 1.67 2.50
A 35 $1,000 15 $2,000 35 $ 3,000 65 1.50 1.75 2.17 2.17
Selection Treatment Cost Benefit
D T1 $ 200 10
B T1 $ 500 20
C T1 $ 500 20
E T1 $ 800 20
A T1 $ 1,000 15
Total $ 3,000 85
Solution:
Available Budget = $3,000
A Simple Comparison: Optimization vs. Ranking/BCA
BCA Solution
Total Benefit = 85
Ranking Solution
Total Benefit = 65
IS THERE A BETTER SOLUTION?
Road
Section
Current
Condition
(PCI)
Treatment Type 1 (T1) Treatment Type 2 (T2) Treatment Type 3 (T3)
CostAfter-Repair
PCI
Benefit
(PCI Gain)Cost
After-Repair
PCI
Benefit
(PCI Gain)Cost
After-Repair
PCI
Benefit
(PCI Gain)
A 35 $1,000 50 15 $2,000 70 35 $ 3,000 100 65
B 55 $500 75 20 $1,000 90 35 $ 2,000 100 45
C 70 $500 90 20 $1,000 100 30
D 80 $200 90 10 $2,000 100 20
E 50 $800 70 20 $1,500 80 30 $ 3,000 100 50
HOW CAN WE FIND THE BEST POSSIBLE
SOLUTION?
A Simple Comparison: Optimization vs. Ranking/BCA
𝑴𝒂𝒙 𝒛 = 𝑿𝒊𝒋. 𝑩𝒊𝒋
𝑿𝒊𝒋. $𝑪𝒊𝒋 ≤ $𝟑, 𝟎𝟎𝟎
𝑿𝒊𝒋 ≤ 𝟏
12% improvement over BCA and 46% over Ranking solution!
Solve
Selection Treatment Cost Benefit
B T2 $ 1000 35
C T2 $ 1000 30
D T1 $ 200 10
E T1 $ 8000 20
Total $ 3,000 95
Solution:
Optimizing Real-Life Problems
A Real-Life Example
Challenge 4 – Affordable, Easy-to-Use, and Powerful Tools
Challenge 4 – Affordable, Easy-to-Use, and Powerful Tools
Challenge 5 – Full Life Cycle Solutions
Concluding Remarks
To attain substantial road capital budget savings it is
necessary to:
1) Address infrastructure deficit and deterioration
2) Pay more attention to preventive maintenance
3) Utilize true optimization capability at network-level analysis
4) Build affordable, easy-to-use, yet powerful tools
5) Follow a full life cycle solution
Questions?
Roozbeh Rashedi
Infrastructure Solutions Inc.
VP of Technology
roozbeh@Infrasol.ca
www.infrasol.ca
Michael Maher
Golder Associates Ltd.
Senior Pavement and Materials Engineer
Michael_Maher@golder.com
www.golder.ca
Contact: