Below are the first 10 and last 10 pages of uncorrected machine-read text (when available) of this chapter, followed by the top 30 algorithmically extracted key phrases from the chapter as a whole.
Intended to provide our own search engines and external engines with highly rich, chapter-representative searchable text on the opening pages of each chapter. Because it is UNCORRECTED material, please consider the following text as a useful but insufficient proxy for the authoritative book pages.

Do not use for reproduction, copying, pasting, or reading; exclusively for search engines.

OCR for page 81
The Basic CAPTool Guide 83 Step 3: Asset and Asset Class Inventory Introduction Transportation asset owners and operators often have responsibilities for or influence over multiple modes. In this step, the user lists the assets or asset classes to be evaluated by the CAPTool. The data entered in this step will be assessed against the thresholds chosen in Step 2 to screen the assets and asset classes for further consideration. These inputs can be entered individually, by name or designation, or by class of assets. Named or designated assets are normally well-known structures that are unique in the jurisdiction. Named assets may also be entered onto the list because of their special significance or impor- tance to the region. Prior to the entry into the CAPTool, the user should screen the list to group similar assets into asset classes. Examples of assembling classes of assets may be · Concrete highway bridges between 1,000 and 2,000 ft total length with ADT between 20,000 and 30,000 vehicles, · Buildings with office space between 20,000 and 30,000 sq ft, and · At-grade transit stations with dual tracks. When these asset classes are entered, the user should carefully note representative values such as key design and operational parameters that are used to represent the entire class. This approach seeks to reduce the number and types of assets to be considered by consolidat- ing assets into classes that can be treated as a group. The user can also enter individual assets likely to be at or near the threshold levels chosen in Step 2. The owner's inventory is combined with the thresholds from Step 2 to identify high-consequence assets--those assets that exceed the selected consequence thresholds. The user may consult and obtain information from available inventories, such as the National Bridge Inventory, or from prior criticality assessments to generate the information needed for this step. Purpose The principal purpose of this step is to enter assets or classes of assets of interest to the user, either because of direct ownership or because they are influenced by the user and the user would like them to be considered by the CAPTool in the analysis. The secondary purpose is to calcu- late whether an asset or asset class surpasses the consequence thresholds chosen by the user. Definitions Asset Class--An aggregation of similar transportation assets. These assets are grouped together because of universal possession of like design specifications. High-Consequence (Critical) Asset--An asset for which a hazard or threat could produce an out- come where one or more consequence thresholds is likely to be exceeded and, therefore, risk mitigation countermeasures should be considered. Assumptions 1. CAPTool uses nominal relationships between asset classes and their threshold-related char- acteristics based on asset parameters. Asset classes unlikely to result in losses that exceed thresholds are eliminated from further consideration.

OCR for page 81
84 CAPTool User Guide 2. Table 5 shows the criteria used to determine whether an event involving the asset (or asset class) could result in an outcome that exceeds the designated consequence threshold. These criteria require data for assets so that the measures associated with the criteria can be calcu- lated and compared to threshold values. 3. The PEP is calculated by estimating the maximum number of persons who might be present when an adverse event occurs using National Fire Protection Association (NFPA) or similar standards. 4. The property criterion is based on planning factors for replacing a destroyed asset. User Inputs The user enters all the assets and asset classes to be considered by the CAPTool into the appro- priate transportation asset category sheet. The categories are those selected in Step 1, from among the following: · Road Bridge · Road Tunnel Table 5. Criteria used to determine if assets exceed consequence thresholds. Property Asset Class PEP Equation Equation Mission Equation (ADT) (detour length) Separated into primary direction 75th, 85th, 95th percentile as and secondary direction -- for each, thresholds relative to typical Road Bridges if vehicles/lane > 2400, assume 40 $20,000/lf bridge inventory (Example is vehicles/ 1000ft. Otherwise assume based on the National Bridge 7.5 veh./1000 fta Inventory) Separated into primary direction and secondary direction--for each, Road Tunnels if vehicles/lane > 2400, assume 40 $100,000/lf User Input for criticality vehicles/ 1000 ft. Otherwise assume 7.5 vehicles/1000 fta Transit/Rail 4 (maximum capacity of rail Below ground = User input if transfer station is Station cars)b critical critical User input percentage of Transit/Rail 2 (maximum capacity of rail $15,600/lf ridership that regularly use this Bridge cars)b transit/rail transportation asset User input percentage of Transit/Rail 2 (maximum capacity of rail $40,000/lf ridership that regularly use this Tunnel cars)b transit/rail transportation asset Administrative Never critical unless so & Support 1 person/175 sq ftc $210/sq ft designated by user Facilities Never critical unless so Ferries Maximum capacity of ferry User input designated by user Average cost per Maximum occupancy of one fleet vehicle Never critical unless so Fleets vehicle maximum number designated by user of vehicles a Derived from the Highway Capacity Manual. TRB, National Research Council, Washington, DC, 2000. b Derived from NFPA 130: Standard for Fixed Guideway Transit and Passenger Rail. National Fire Protection Association, Quincy, MA, 2007. c Derived from NFPA 101: Life Safety Code . National Fire Protection Association, Quincy, MA, 2006.

OCR for page 81
The Basic CAPTool Guide 85 · Transit/Rail Bridge · Transit/Rail Tunnel · Transit/Rail Station · Administrative and Support Facilities · Ferries · Fleets (Rail and Bus) The user initiates the consequence threshold screening for each transportation asset category. Instructions for Entering Assets/Asset Classes into CAPTA The specific data needed varies by the asset category. Figure 6 shows the data required for road bridges. CAPTool uses these entries to calculate the potential consequences of each asset or asset class. Specific data required for each asset or asset class within each asset category follow: · Road Bridges/Tunnels ­ Annual average daily traffic (AADT) ­ Length ­ Lanes ­ Detour ­ Type of construction material ­ A determination if a bridge is cable stay or suspension (requiring a unique input) · Transit/Rail Bridges/Tunnels ­ Maximum car occupancy ­ Type of construction material (steel vs. concrete) ­ Square footage · Transit/Rail Stations ­ Unique identification ­ Maximum occupancy ­ Above- or below-grade indicator ­ Transfer point indicator · Administration and Support Facilities ­ Square footage ­ Replacement cost ­ Maximum occupancy · Ferries ­ Maximum occupancy ­ Maximum number of vehicles loaded · Fleets ­ Maximum number of vehicles ­ Maximum occupancy of vehicles ­ Replacement cost of individual vehicles The inputs for road bridges/tunnels also contain a user input for cable stay and suspension bridges. These highly individual structures require specific replacement cost data. Figure 7 shows data required for administrative and support facilities. These data are used to determine if assets are likely to exceed nominal consequence threshold values in the event of the postulated hazards or threats. Note from Figure 7 that buildings are only critical if the user marks them as such in the last column. By reviewing Figure 7 and related output, transportation owners and operators can quickly determine which assets are most likely to be vulnerable to hazards and threats and, ultimately, where countermeasures are likely to be needed to mitigate risks.

OCR for page 81
86 CAPTool User Guide Specified Thresholds 1 2 3 4 5 6 Basic CAPTool Potentially Exposed Population 1 1a 2 3 4 5a 5b 5c 5 6 Expanded CAPTool Property Loss Mission Importance Describe Infrastructure Assets (Road bridges) Instructions: Calculate Previous Enter all road bridge assets below, along with the necessary data. If you wish to manually mark certain assets Criticality as definitely critical, toggle the "Manual Override" button on, and indicate the assets you deem to be critical by toggling from "No" to "Yes" in the manual override column. Manual Next Override On/Off To add comments, toggle the "Comments" button on, and insert any desired comments for each asset. To hide the comments column, toggle the "Comments" button off. Comments Hide/Unhide Click "Calculate Criticality" to view a summary of criticality areas for your assets. When done, click "Next. ROAD BRIDGES CRITICALITY Potentially Replacement Cost Per Asset Asset ID Quantity ADT Length (ft) Lanes Detour (mi) Exposed Property Mission (Optional) Population Loss Importance Manual Override Figure 6. Sample asset inventory data entry template for road bridges.

OCR for page 81
Specified Thresholds 1 2 3 4 5 6 Basic CAPTool Potentially Exposed Population 101 1 1a 2 3 4 5a 5b 5c 5 6 Expanded CAPTool Property Loss $101,699,661 Mission Importance No Describe Infrastructure Assets (Admin & Support Facilities) Instructions Calculate Previous Enter all building assets below, along with the necessary data. If you wish to manually mark certain Criticality assets as definitely critical, toggle the "Manual Override" button on, and indicate the assets you deem to be critical by toggling from "No" to "Yes" in the manual override column. Manual Next Override On/Off To add comments, toggle the "Comments" button on, and insert any desired comments for each asset. To rehide the comments column, toggle the "Comments" button off. Comments Hide/Unhide Click "Calculate Criticality" to view a summary of criticality areas for your assets. When done, click "Next." ADMIN & SUPPORT FACILITIES CRITICALITY Potentially Replacement Cost Per Occupancy Exposed Property Mission Asset ID Quantity Sq. Footage Asset (Optional) (Optional) Population Loss Importance Manual Override Northern Region TMC 1 4609 Eastern Region TMC 1 12074 Central Region TMC 1 14997 SW Region TMC 1 22000 Y NW Region TMC 1 23011 Y Central Office 1 206000 Y Maintenance Division 1 78000 Y Central Services 1 87000 Y Brighton Office - Materials 1 45000 Y Western District - Administration Building 1 36000 Y Eastern District - Administration Building 1 34000 Y South District - Administration Building 1 56000 Y North District - Administration Building 1 21000 Y The Basic CAPTool Guide Figure 7. Criticality assessment for administrative and support facilities. 87

OCR for page 81
88 CAPTool User Guide Instruction for Calculating High Consequence (Criticality) Following entry of all assets/asset classes to be considered, CAPTool calculates which of the assets/asset classes exceed the thresholds chosen by the user and will continue forward for counter- measure assessment. On each transportation asset category entry form, the "Calculate Criticality" button is located to the upper right with the other choice boxes. This option evaluates each entered asset/asset class against the selected consequence thresholds. The assets/asset classes that exceed the threshold values will be designated in the far right columns with a "Y." Figure 7 illustrates Step 3. Note that each of the assets identified in this figure may represent a class of assets with similar attributes. The "Y" in the "criticality" table on the right of each fig- ure indicates that the attributes of the asset (or asset class) are such that, if exposed to the previ- ously identified hazards and threats, the result could exceed one or more of the consequence thresholds (E=exposed population, P=property damage, M=mission, MO=manual override). The MO code can be entered by the user to ensure that a specific asset is included among those identified as of high consequence. Output Based on the inventory provided by the user, CAPTool identifies the assets/asset classes that exceed the consequence thresholds chosen in Step 2. Those that do not exceed thresholds are not carried forward in the process. The asset classification step will most likely have the following effects on the list of critical assets: · Vehicle assets are grouped in common classes and are not likely to meet criticality thresholds and therefore, in most cases, will be eliminated from further consideration unless the user chooses to include them using the manual override. Special purpose vehicles (e.g., law enforcement or those used to transport national leadership) will undoubtedly be subjected to much more thorough analysis than can be afforded in this process. · Facilities such as yards, terminals, and traffic management centers (TMC) differ in size and configuration. Recommended countermeasures will vary, with some exceptions, principally based on facility size. Their relative lack of personnel and ease of replacement indicate that they are not likely to meet criticality thresholds for either casualties or replacement cost. · Stations and terminals are divided into size classes based on potentially exposed population. Smaller stations are unlikely to meet criticality thresholds. · Assets that accommodate large populations, are high cost, and/or play major or critical trans- portation roles are most likely to fall above criticality thresholds. These assets (bridges, tun- nels, office buildings) require a second level of classification based on: ­ Data available in existing databases (e.g., the National Bridge Inventory) ­ General classifications based on high-level parameters (e.g., square feet of office space). ATA Example Figure 8 shows the data ATA entered into CAPTA on road bridges within their jurisdiction or influence.

OCR for page 81
Specified Thresholds 1 2 3 4 5 6 Basic CAPTool Potentially Exposed Population 200 1 1a 2 3 4 5a 5b 5c 5 6 Expanded CAPTool Property Loss $101,699,661 Mission Importance Demand Percentile II Describe Infrastructure Assets (Road bridges) Instructions: Calculate Previous Enter all road bridge assets below, along with the necessary data. If you wish to manually mark certain assets Criticality as definitely critical, toggle the "Manual Override" button on, and indicate the assets you deem to be critical by toggling from "No" to "Yes" in the manual override column. Manual Next Override On/Off To add comments, toggle the "Comments" button on, and insert any desired comments for each asset. To hide the comments column, toggle the "Comments" button off. Comments Hide/Unhide Click "Calculate Criticality" to view a summary of criticality areas for your assets. When done, click "Next." ROAD BRIDGES CRITICALITY Replacement Cost Per Asset Manually mark as Potentially Asset ID Quantity ADT Length (ft) Lanes Detour (mi) Exposed Property Mission (Optional) critical? Population Loss Importance Manual Override Fair St. Bridge 1 1469 2389 2 76 Yes Y ES Rhodes Bridge 1 9753 3409 2 54 No Peck Bridge 1 234000 1428 8 21 No Y Tucker Channel Bridge 1 4967 671 2 89 No Broad Bridge 1 56099 4530 4 43 No Y Shaw Bridge 4 45032 7927 4 78 No Y Y I-95 Bridge 1 2390 801 2 65 No High Bridge 1 89345 5609 4 92 No Y Y Little River Bridge 1 50345 10478 4 23 No Y Y McDonald Bridge 1 42000 12093 6 56 $50,000,000 No Y Figure 8. ATA example. The Basic CAPTool Guide 89