- \n
- Minimize maintenance deferral beyond allowable intervention intervals.<\/li>\n\n\n\n
- Maximize the mean time interval between disruptive road closures.<\/li>\n\n\n\n
- Protect the structural integrity of the pavement subgrade by reducing the frequency of repetitive trenching.<\/li>\n<\/ul>\n\n\n\n
![\"\"](\"http:\/\/141.23.68.248\/wp\/wp-content\/uploads\/2026\/02\/image-559.png\")
<\/a><\/figure>\n\n\n\nFig01.<\/strong> Road Original Maintenance Timeline<\/p>\n\n\n\n
![\"\"](\"http:\/\/141.23.68.248\/wp\/wp-content\/uploads\/2026\/02\/image-560.png\")
<\/a><\/figure>\n\n\n\nFig02.<\/strong> Sewer Original Maintenance Timeline<\/p>\n\n\n\n
![\"\"](\"http:\/\/141.23.68.248\/wp\/wp-content\/uploads\/2026\/02\/image-561.png\")
<\/a><\/figure>\n\n\n\nFig03.<\/strong> Stormwater Manhole Original Maintenance Timeline<\/p>\n\n\n\n
![\"\"](\"http:\/\/141.23.68.248\/wp\/wp-content\/uploads\/2026\/02\/image-562.png\")
<\/a><\/figure>\n\n\n\nFig04.<\/strong> DN200 Water Pipe Original Maintenance Timeline<\/p>\n\n\n\n
![\"\"](\"http:\/\/141.23.68.248\/wp\/wp-content\/uploads\/2026\/02\/image-563.png\")
<\/a><\/figure>\n\n\n\nFig05.<\/strong> Water Tank Original Maintenance Timeline<\/p>\n\n\n\n
Maintenance Strategic Scenarios<\/h2>\n\n\n\n
To evaluate the impact of coordination on the urban corridor, we analyzed three distinct maintenance scenarios. These scenarios allow us to compare the traditional siloed approach against forced bundling strategies to identify the most efficient lifecycle path.<\/p>\n\n\n\n
Scenario 1: Independent Baseline (Original)<\/strong>
In this scenario, each of the five systems: road, sewer, water main, stormwater, and treatment facility, operates on its own design lifecycle. Maintenance occurs only when an individual asset reaches its failure threshold or scheduled service date. While this ensures assets are serviced exactly when needed, it results in high Total Closure Days due to frequent, uncoordinated excavations. Bundling only occurs by chance when schedules happen to align.
Scenario 2: 5-Year Coordinated Road Cycle<\/strong>
This strategy moves toward a Coordinated Maintenance Window. All non-emergency utility work is synchronized with a fixed 5-year road closure cycle. Sub-surface interventions are either accelerated or slightly deferred to fit within this window. This approach aims to reduce the frequency of trenching and minimize the long-term damage to the pavement subgrade caused by repetitive cutting.
Scenario 3: 10-Year Coordinated Road Cycle<\/strong>
This represents an Extreme Bundling strategy. By extending the maintenance interval to 10 years, we maximize the Mean Deferral Time and significantly reduce the number of road closures over the 75-year lifecycle. However, this scenario increases the risk of run-to-failure events for utilities, as some assets may require intervention before the 10-year window arrives.
Objective: Independent vs. Forced Bundling<\/strong>
The goal of comparing these scenarios is to find the sweet spot on the Pareto Frontier. We seek a strategy that provides enough flexibility for utility reliability (Scenario 1) while capturing the massive cost and structural benefits of synchronized closures (Scenarios 2 and 3).
<\/p>\n\n\n\nCoordinated Maintenance Scenario Analysis:<\/h2>\n\n\n\n
To identify an efficient maintenance schedule, a parameter space simulation was conducted to evaluate coordinated intervention scenarios. Hundreds of scenarios were assessed by varying the frequency (years) and duration (days) of road closures required to service the integrated utilities.<\/p>\n\n\n\n
![\"\"](\"http:\/\/141.23.68.248\/wp\/wp-content\/uploads\/2026\/02\/image-564.png\")
<\/a><\/figure>\n\n\n\nFig06. <\/strong>Scenario mapping of Road Closure Duration vs. Frequency<\/p>\n\n\n\n
As shown in the Parameter Space plot, the Total Closure Days (indicated by the color gradient from green to red) increase significantly when closures are too frequent or poorly coordinated. The highlighted scenarios (red triangles) represent high-performance cases that achieve the required maintenance with minimal impact on the town\u2019s mobility.<\/p>\n\n\n\n<\/p>\n\n\n\n
Pareto Frontier Results and Selection:<\/h2>\n\n\n\n
To identify the final recommendation, a\u00a0Pareto Frontier Analysis<\/strong>\u00a0was conducted. This analysis plots the conflict between minimizing the total days the road is closed and maximizing the time between those closures (Deferral Time).<\/p>\n\n\n\n
<\/p>\n\n\n\n
![\"\"](\"http:\/\/141.23.68.248\/wp\/wp-content\/uploads\/2026\/02\/image-565.png\")
<\/a><\/figure>\n\n\n\nFig07.<\/strong> <\/strong>Pareto Frontier identifying the optimal trade-offs between Mean Deferral Time and Total Closure Days<\/p>\n\n\n\n
Results Analysis:<\/h2>\n\n\n\n- \n
- Initial State:<\/strong>\u00a0Without coordination, the separate systems would result in frequent, overlapping closures, potentially exceeding 300+ total closure days over the 75-year lifecycle.<\/li>\n\n\n\n
- Optimized Selection:<\/strong>\u00a0The Pareto Frontier (blue line) reveals a high-efficiency zone. By selecting an optimal solution from the “elbow” of the curve, we can achieve a\u00a0Mean Deferral Time of approximately 4 to 6 years<\/strong>\u00a0while keeping the\u00a0Total Closure Days below 100 days<\/strong>\u00a0for the entire lifecycle.<\/li>\n<\/ul>\n\n\n\n
Conclusion:<\/h2>\n\n\n\n
By integrating the maintenance of the water tank, water main, sewer, and stormwater systems into the road\u2019s lifecycle plan, we significantly enhance the service level of the corridor. This coordinated approach ensures that the coastal town maintains water reliability and roadway safety with minimal long-term disruption.<\/p>\n\n\n\n
< Integration Context <\/a>————— Lfie-Cycle Analysis<\/a> > <\/p>\n","protected":false},"excerpt":{"rendered":"Integration Logic and Objectives The urban water corridor consists of five interdependent systems: Hot Mix Asphalt (HMA) road, DN300 foul sewer, DN200 water main, stormwater manholes, and a water treatment facility. These systems share aContinue reading<\/a><\/p>\n","protected":false},"author":300,"featured_media":0,"parent":24056,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-25192","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"http:\/\/141.23.68.248\/wp\/index.php?rest_route=\/wp\/v2\/pages\/25192","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/141.23.68.248\/wp\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"http:\/\/141.23.68.248\/wp\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"http:\/\/141.23.68.248\/wp\/index.php?rest_route=\/wp\/v2\/users\/300"}],"replies":[{"embeddable":true,"href":"http:\/\/141.23.68.248\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=25192"}],"version-history":[{"count":11,"href":"http:\/\/141.23.68.248\/wp\/index.php?rest_route=\/wp\/v2\/pages\/25192\/revisions"}],"predecessor-version":[{"id":28311,"href":"http:\/\/141.23.68.248\/wp\/index.php?rest_route=\/wp\/v2\/pages\/25192\/revisions\/28311"}],"up":[{"embeddable":true,"href":"http:\/\/141.23.68.248\/wp\/index.php?rest_route=\/wp\/v2\/pages\/24056"}],"wp:attachment":[{"href":"http:\/\/141.23.68.248\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=25192"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
- Optimized Selection:<\/strong>\u00a0The Pareto Frontier (blue line) reveals a high-efficiency zone. By selecting an optimal solution from the “elbow” of the curve, we can achieve a\u00a0Mean Deferral Time of approximately 4 to 6 years<\/strong>\u00a0while keeping the\u00a0Total Closure Days below 100 days<\/strong>\u00a0for the entire lifecycle.<\/li>\n<\/ul>\n\n\n\n
- Initial State:<\/strong>\u00a0Without coordination, the separate systems would result in frequent, overlapping closures, potentially exceeding 300+ total closure days over the 75-year lifecycle.<\/li>\n\n\n\n