47.5 MB - The Whole Building Design Guide

Table 3-8: Checklist for Building Vulnerability of Critical Facilities Exposed to High Winds (continued)Vulnerability Sections Guidance ObservationsGeneral (continued)Is the critical facility older than 5years, or is it located in a zone withbasic wind speed greater than 90mph?In either case, perform a vulnerabilityassessment with life-safety issues as the firstpriority, and property damage and interruptionof service as the second priority.SiteWhat is the design wind speed at thesite? Are there topographic featuresthat will result in wind speed-up?What is the wind exposure on site?Are there trees or towers on site?Road accessIs the site in a hurricane-proneregion?If in a hurricane-prone region, arethere aggregate surfaced roofs within1,500 feet of the facility?ASCE 7 and Section 3.1.3.Avoid selecting sites in Exposure D, and avoidescarpments and hills (Section 3.1.3).Avoid trees and towers near the facility (Section3.3.1.1). If the site is in a hurricane-proneregion, avoid trees and towers near primaryaccess roads (Section 3.4.1).Provide two separate means of access (Section3.3.1.1).ASCE 7. If yes, follow hurricane-resistant designguidance (Section 3.4).Remove aggregate from existing roofs (Section3.6.2.3). If the buildings with aggregate areowned by other parties, attempt to negotiatethe removal of the aggregate (e.g., consideroffering to pay the reroofing costs).ArchitecturalWill the facility be used as a shelter? If yes, refer to FEMA 361.Are there interior non-load-bearingwalls?Are there multiple buildings on site ina hurricane-prone region?Are multiple elevators needed for thebuilding?Design for wind load according to Section3.3.3.3.Provide enclosed walkways between buildingsthat will be occupied during a hurricane(Section 3.4.1).Place elevators in separate locations served byseparate penthouses (Section 3.4.4.1).3-148 MAKING CRITICAL FACILITIES SAFE FROM High Wind