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From page 109... ... 109 This example is intended to illustrate the steps an agency would take to analyze and prioritize preservation actions for tunnel operations and maintenance. While the example is fictional, manipulated real-world data have been used to illustrate the impact of many different preserva- tion actions in tunnels with varied average daily traffic and conditions. Read the entire page →
From page 110... ... 110 Guide for the Preservation of Highway Tunnel Systems Reliability: 20% Safety: 40% Security: 5% Preservation: 18% Quality of Service: 15% Environment: 2% Total = 100% ü OK To determine the LOS score for a preservation action, ratings for each LOS category are multiplied by the corresponding weight, summed, and then divided by 5 to achieve a score of between 0 and 100. Table D-2 provides an example showing the calculation of the LOS score for replacing the existing trench drains in Tunnel 1. Read the entire page →
From page 111... ... Table D-3. LOS ratings and LOS scores for all preservation actions. Read the entire page →
From page 112... ... 112 Guide for the Preservation of Highway Tunnel Systems Levels of Service Reliability Safety Security Preservation Quality of Service Environment LOS Score (Eq. Read the entire page →
From page 113... ... Detailed Example 113 • Agency oversight cost (generally taken as a percentage of the capital cost) ; • Change in annual costs considering energy, maintenance, closures, reduction in accidents, reduction in staff, and so forth; • Average daily traffic for each tunnel; and • Service life after improvement. Read the entire page →
From page 114... ... 114 Guide for the Preservation of Highway Tunnel Systems Annualized Life-Cycle Cost ( ) Read the entire page →
From page 115... ... Detailed Example 115 denominator. For more discussion on calibrating the cost-effectiveness score, see Section 5.3.4. Read the entire page →
From page 116... ... 116 Guide for the Preservation of Highway Tunnel Systems Table D-6. (Continued) Read the entire page →
From page 117... ... Detailed Example 117 Risk-Based Urgency Score The final component required to calculate the overall measure of effectiveness is the RBU score. The tunnel owner has compiled the following information for each preservation action. Read the entire page →
From page 118... ... 118 Guide for the Preservation of Highway Tunnel Systems • Risk of an unplanned event probability. – Rate 1 to 3, with 1 representing low probability and 3 representing high probability. Read the entire page →
From page 119... ... Detailed Example 119 Table D-8. (Continued) Read the entire page →
From page 120... ... 120 Guide for the Preservation of Highway Tunnel Systems Urgency Score Urgency score = urgency * 10 Urgency score = 5 * Read the entire page →
From page 121... ... Detailed Example 121 Table D-10. Measure of effectiveness scores for all preservation actions. Read the entire page →
From page 122... ... 122 Guide for the Preservation of Highway Tunnel Systems Levels of Service LOS Score CE Score RBU Score MOE Score Weights 35% 20% 45% Preservation Action Tunnel # Repair spalled portal concrete and replace stone facing 5 73.0 100.0 10.0 50.1 Remove and replace delaminated wall tiles 5 48.0 100.0 40.0 54.8 Repair deluge system on exhaust fans 5 70.4 24.2 80.0 65.5 Replace fluorescent lights in electrical room 5 16.0 100.0 10.0 30.1 Install lane signals every 300 ft within tunnel 5 74.2 65.0 40.0 57.0 Repair spalled concrete tunnel barriers 6 24.8 25.1 20.0 22.7 Repair spalls on arch and walls 6 51.0 17.5 20.0 30.4 Install new CCTV cameras and system 6 55.0 46.1 50.0 51.0 Install over-height truck detection equipment and system, remove existing 6 61.4 59.7 80.0 69.4 Install oil–water separator 6 18.0 100.0 30.0 39.8 Rehabilitate and upgrade existing ventilation system 6 72.8 2.7 80.0 62.0 Table D-10. (Continued) Read the entire page →
From page 123... ... Detailed Example 123 Table D-11. (Continued) Read the entire page →
From page 124... ... 124 Guide for the Preservation of Highway Tunnel Systems Evaluations of Funding and Staffing To evaluate the preservation actions that can be accomplished within the funding limit, to identify funding needs for future years, or to evaluate the staffing needs for future years, further analysis is needed. To facilitate these analyses, the user should collect the following information: • Percent of capital cost attributed to labor • Year that preservation action will be funded (This term is most effectively determined through trial and error by adjusting the user-priority values.) Read the entire page →
From page 125... ... Detailed Example 125 Labor cost with oversight = (labor cost) + (agency oversight) Read the entire page →
From page 127... ... 9 Repair/ replace ceiling panels at seven locations 2 60,000 50 30,000 100 30,000 2,400 32,400 32,400 30,000 62,400 2 1,872 64,272 10 Install lane signals every 300 ft within tunnel 5 110,000 50 55,000 0 – 11,000 11,000 66,000 55,000 121,000 2 3,630 124,630 11 Install lane signals every 300 ft within tunnel 2 400,000 50 200,000 0 – 40,000 40,000 240,000 200,000 440,000 2 13,200 453,200 12 Repair spalled portal concrete and replace stone facing 5 30,000 50 15,000 0 – 3,000 3,000 18,000 15,000 33,000 3 2,010 35,010 13 Remove existing concrete tunnel ceiling 6 8,000,000 65 5,200,000 0 – 800,000 800,000 6,000,000 2,800,000 8,800,000 3 535,920 9,335,920 14 Install manual fire alarm boxes 1 235,000 60 141,000 0 – 23,500 23,500 164,500 94,000 258,500 3 15,743 274,243 15 Increase tunnel daytime light level 3 502,000 50 251,000 0 – 50,200 50,200 301,200 251,000 552,200 3 33,629 585,829 16 Install flood gates 6 8,000,000 50 4,000,000 100 4,000,000 320,000 4,320,000 4,320,000 4,000,000 8,320,000 4 771,489 9,091,489 17 Install new CCTV cameras and system 6 220,000 50 110,000 100 110,000 11,000 121,000 121,000 110,000 231,000 4 21,420 252,420 (continued on next page) Read the entire page →
From page 129... ... Detailed Exam ple 129 27 Black hole effect – apply industrial coating to portals 1 120,000 70 84,000 0 – 12,000 12,000 96,000 36,000 132,000 5 16,567 148,567 28 Repair spalls on arch and walls 6 1,000,000 75 750,000 0 – 100,000 100,000 850,000 250,000 1,100,000 5 138,060 1,238,060 29 Install oil– water separator 6 90,000 50 45,000 0 – 9,000 9,000 54,000 45,000 99,000 5 12,425 111,425 30 Replace fluorescent lights in electrical room 5 30,000 70 21,000 100 21,000 1,200 22,200 22,200 9,000 31,200 5 3,916 35,116 31 Repair spalled concrete tunnel barriers 6 700,000 75 525,000 0 – 70,000 70,000 595,000 175,000 770,000 5 96,642 866,642 32 Replace expansion joint material in two locations 4 5,000 70 3,500 100 3,500 200 3,700 3,700 1,500 5,200 5 653 5,853 25 Remove and replace delaminated wall tiles 5 20,000 75 15,000 0 – 2,000 2,000 17,000 5,000 22,000 5 2,761 24,761 26 Install transient voltage surge suppressors 4 24,000 50 12,000 0 – 2,400 2,400 14,400 12,000 26,400 5 3,313 29,713 Read the entire page →
From page 130... ... Abbreviations and acronyms used without deﬁnitions in TRB publications: A4A Airlines for America AAAE American Association of Airport Executives AASHO American Association of State Highway Officials AASHTO American Association of State Highway and Transportation Officials ACI–NA Airports Council International–North America ACRP Airport Cooperative Research Program ADA Americans with Disabilities Act APTA American Public Transportation Association ASCE American Society of Civil Engineers ASME American Society of Mechanical Engineers ASTM American Society for Testing and Materials ATA American Trucking Associations CTAA Community Transportation Association of America CTBSSP Commercial Truck and Bus Safety Synthesis Program DHS Department of Homeland Security DOE Department of Energy EPA Environmental Protection Agency FAA Federal Aviation Administration FHWA Federal Highway Administration FMCSA Federal Motor Carrier Safety Administration FRA Federal Railroad Administration FTA Federal Transit Administration HMCRP Hazardous Materials Cooperative Research Program IEEE Institute of Electrical and Electronics Engineers ISTEA Intermodal Surface Transportation Efficiency Act of 1991 ITE Institute of Transportation Engineers MAP-21 Moving Ahead for Progress in the 21st Century Act (2012) NASA National Aeronautics and Space Administration NASAO National Association of State Aviation Officials NCFRP National Cooperative Freight Research Program NCHRP National Cooperative Highway Research Program NHTSA National Highway Traffic Safety Administration NTSB National Transportation Safety Board PHMSA Pipeline and Hazardous Materials Safety Administration RITA Research and Innovative Technology Administration SAE Society of Automotive Engineers SAFETEA-LU Safe, Accountable, Flexible, Efficient Transportation Equity Act: A Legacy for Users (2005) Read the entire page →
From page 131... ... TRA N SPO RTATIO N RESEA RCH BO A RD 500 Fifth Street, N W W ashington, D C 20001 A D D RESS SERV ICE REQ U ESTED ISBN 978-0-309-37486-6 9 7 8 0 3 0 9 3 7 4 8 6 6 9 0 0 0 0 N O N -PR O FIT O R G . Read the entire page →

From page 109...

... 109 This example is intended to illustrate the steps an agency would take to analyze and prioritize preservation actions for tunnel operations and maintenance. While the example is fictional, manipulated real-world data have been used to illustrate the impact of many different preserva- tion actions in tunnels with varied average daily traffic and conditions.