Guide Brief 13 - Resilience Gaps - Identifying and Prioritizing Closure of Resilience Gaps

Abstract

This Guide Brief aims to assist collaborative planning teams withStep 4, Plan Development, by supporting communities in identifying resilience gaps using the performance goals tables. These performance goals focus on system function rather than individual component performance. The document discusses approaches to prioritize actions that address those gaps and/or mitigation measures to close those gaps. Both are essential aspects of developing an overall resilience plan.The intended user of this Guide Brief is an analyst or resilience planning team member who helps set priorities for the overall community or for a specific building cluster or infrastructure system. Section 2 illustrates an example of using performance goals tables to identify resilience gaps. A performance goals table for buildings or infrastructure systems can be used in the same way. Section 3 discusses considerations for evaluating various alternatives for closing resilience gaps. Section 4 discusses three methods for prioritizing resilience gaps that communities can apply. IntroductionThe first step in developing a community resilience plan is identifying the gaps between the anticipated performance and the desired performance of building clusters and supporting infrastructure systems. This step is followed by prioritizing mitigation and recovery approaches to address those gaps.After resilience gaps are prioritized based on the importance of the gaps themselves, adjustments may need to be made to the list of priorities based on additional criteria. For example, if a mitigation measure is very expensive, the gap may move down the list of priorities. Additionally, the feasibility and practicality of the solutions may also affect the prioritization.While there is no single correct way to approach this task, this Guide Brief reviews a number of possible approaches, considering such concepts as:Economic, social, and environmental elements When the improvement would affect the restoration and recovery process https://doi.org/10.6028/NIST.SP.1190GB-13How existing assets may influence decisionsThe overall importance of the infrastructure in meeting critical needs of the community (particularly in post-event circumstances).The Riverbend example in Chapter 9 of the Guide develops a number of gap closure projects, all of which are carried forward in that example. Completing all the proposed projects may be possible, but prioritization is always an important aspect of community resilience planning. The National Institute of Standards and Technology (NIST) Economic Decision Guide for Buildings and Infrastructure Systems (EDG) [Gilbert et al. 2015] investigates two competing Riverbend bridge mitigation approaches from an economic perspective. Identify Resilience GapsThis section provides an example of identifying a resilience gap (desired versus anticipated performance) by inspecting the completed performance goals table and comparing desired goals with anticipated performance using one infrastructure system, the wastewater system.