August 11, 2021
Interlocking Concrete Pavement Institute 14801 Murdock Street, Suite 230 Chantilly, Virginia 20151 Attention: Mr. Robert Bowers
Subject: Peer Review of “Comparison of Life-Cycle Maintenance and Rehabilitation Costs for Typical Pavement Systems” 04-02107794.000-IM-0-L-0001-0A
Dear Sir:
Englobe is pleased to review the report titled “Comparison of Life-Cycle Maintenance and Rehabilitation Costs for Typical Pavement Systems” dated June 4, 2021. The intent for the report is to evaluate the life cycle costs (LCCA) for the maintenance portion of the asset. Initial cost was not considered due to the initial cost being absorbed by the developer. The report is evaluating the costs relevant to the owner after turnover from a developer. The report follows standard LCCA principles as described in Ministry of Transportation of Ontario, “Guidelines for the Use of Life Cycle Cost Analysis on MTO Freeway Projects”. The discount rate used was 4 percent which is in the normal range. Overall, the report is based on well established principles and can be reproduced by an owner using their local cost data. Comments below are additional highlights of important information provided in the report or reflections on costs provided. Comments: •
Pavement cross-sections are standard sections used in some municipalities in Ontario. These sections, as indicated in the report, are thicker than required such that fatigue is not a concern in the LCCA. Fatigue damage is not normally the driver for low volume roads, trails and sidewalks, usually environmental effects are the primary drivers. The maintenance schedule reflects this.
Englobe Corp.
T 519.685.6400 F 519.685.0943 london@englobecorp.com
Unit 12 – 60 Meg Drive London (Ontario) N6E 3T6 Canada
Subject : Peer Review of “Comparison of Life-Cycle Maintenance and Rehabilitation Costs for Typical Pavement Systems” 04-02107794.000-IM-0-L-0001-0A
August 11, 2021
•
The cost for partial depth repair is based off a 2011 study. The expectation would be some inflationary increases for this item. Some agencies are moving away from partial depth repairs since they are costly in comparison to full depth PCC repair.
•
Cost for full depth repair is based on a 2011 study, the expectation would be some inflationary increases.
We trust the enclosed is to your satisfaction. If, additional information should be required, please communicate with the undersigned. Yours very truly, Englobe Corp.
Mick Prieur, P.Eng, PMP Director – Geotechnical and Materials Engineering-SWO
MP
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