47.5 MB - The Whole Building Design Guide

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For the 2006 hurricane season, Pass Christian emergency responseplans include the evacuation of all vehicles to a staging site awayfrom the coastline, and away from trees and other objects that maybecome wind-borne debris. This geographic distancing of vehiclesfrom the coastline (and the area affected most by the storm andits surge) will protect key equipment and reduce the impact of afuture storm by allowing the first responders to be mobile shortlyafter the event. It should be noted, however, that many jurisdictionsin low-lying areas do not have safe staging sites at higherelevations or away from the coastline.Based on conversations with many emergency response crews thatwere affected by Katrina, the protection of their equipment andvehicles was a main consideration prior to the storm. Many jurisdictionsthroughout Mississippi and Louisiana decided to spreadtheir vehicles out to many locations thought to be safe, in order tobe certain that at least some of them would remain operational.This practice proved prudent and enhanced their abilities to respondin the immediate aftermath of the disaster. The vehiclesshould be sheltered in an area that is safe from flooding hazardand easily accessible after the event.4.4.12 SummaryEmergency response services are at the backbone of a community’sability to protect and save the lives and property of its citizensin any crisis. The provision of these services depends on the uninterruptedoperation of emergency response facilities duringand after a hazard event. This means not only that the buildingsthat house the crews and equipment must survive the onslaughtof flooding and high winds with minimal damage, but that all theequipment and systems necessary for emergency operations mustremain fully functional.Hurricane Katrina showed that emergency response facilitieshave a better chance of protecting their operations if they occupysolidly constructed buildings with sufficient reserve structuralcapacity that cannot be easily overwhelmed by a storm of this magnitude.It also showed that facilities with functional generatorswere better equipped to respond after the storm than those thatwere left completely without power. Since the facilities cannot op-OBSERVATIONS ON THE PERFORMANCE OF CRITICAL FACILITIES4-67
erate without adequate emergency power supply, all electricalsystems should be connected to power back-ups, and emergencygenerators should be elevated and protected against floodwatersand wind-borne debris.Mechanical systems need to be located in a sheltered area, wherethey will not be damaged by wind and flooding. Plumbing systemsshould be equipped with backflow inhibitors to prevent sewagefrom entering the structure during a flood. Provisions should alsobe made to allow the isolation of the building’s water supply, sothat it is possible to feed water directly into the building’s waterlines until municipal water supplies are restored.Finally, the lines of communication between community commandcenters and individual facilities must remain functional atall times. The basic communications systems need to be protectedagainst the effects of flooding and high-winds as much as possible,but as this storm showed, system redundancy is still the bestpolicy. In the event of damage, the facilities should have alternativemeans of communication that do not depend on local systemsand networks that could be damaged in the storm.4-68 OBSERVATIONS ON THE PERFORMANCE OF CRITICAL FACILITIES
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Risk Management SeriesDesign Guidef
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Any opinions, findings, conclusions
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ational during and after a major di
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TARGET AUDIENCEThis manual describe
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Appendix A contains a list of acron
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Forster, FEMA; David Godschalk, Uni
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Chapter 2- Making Critical faciliti
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2.4.6 Utility Installations .......
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4.4.8 Utility Plumbing Systems.....
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avoid them when feasible. In cases
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It then crossed Florida into the Gu
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Figure 1-2: Mississippi coast SLOSH
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isks for the facility at the propos
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m Appoint a building program manage
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-Figure 1-3: Process flow chart for
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hazards, usually refers to a buildi
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occurrence during a specified time
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ut is moderate overall. Some hazard
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words, the acceptable performance o
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prior to the onset of this level of
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1.4 REFERENCESAmerican Society of C
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MAKING CRITICAL FACILITIES SAFE FRO
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m Land subsidence, which increases
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valley or the presence of obstructi
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2.1.1.1 Probability of Occurrence o
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year, a very low probability flood
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m FIRMs and Flood Insurance Studies
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Figure 2-3: Riverine flood hazard z
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have been prepared by the U.S. Army
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ABFEs represent the best estimate o
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The following characteristics that
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Figure 2-7 shows the general relati
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2.1.2.5 Hydrodynamic LoadsWater flo
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stillwater depth) and that waves pr
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Debris velocity: The velocity of th
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The most convincing evidence of the
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2.1.3.2 Summary of the NFIP Minimum
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complished through a State permit,
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Developed through a consensus proce
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2.2 CRITICAL FACILITIES EXPOSED TOF
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listed includes health hazards, los
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overview on performance-based desig
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Figure 2-12:Katrina’s storm surge
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Buoyancy and uplift: If below-grade
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acceptable, depending on the type o
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Metal components: Metal structural
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Emergency power generators: Generat
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Office records and police files: Wh
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2.3 REQUIREMENTS AND BESTPRACTICES
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terior drainage (on the land side);
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Slab-on-grade foundation on structu
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and debris and ice impact loads. Fl
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are capable of withstanding direct
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pressure, hydrodynamic loads, wave
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may significantly reduce the certai
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2.3.2.1 Elevation ConsiderationsThe
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Figure 2-30:Flood hazard zones inco
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path when designing and specifying
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ular attention to underfloor utilit
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2.3.5.4 Storage Tank InstallationsA
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2.4.2 SITE MODIFICATIONSA plan to m
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Mobilized floodwall: This category
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methods used to move other types of
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Even if a facility is unlikely to s
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Wastewater system components become
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Emergency barriers are measures of
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2.5 CHECKLIST FOR BUILDINGVULNERABI
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Table 2-3: Checklist for Building V
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FEMA, Protecting Building Utilities
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MAKING CRITICAL FACILITIES SAFE FRO
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flow is typically 6,000 to 12,000 f
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Tornado: This is a violently rotati
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Figure 3-3: Design wind speeds for
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Exposure: The characteristics of th
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Internal pressure (building pressur
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Figure 3-7:Schematic of internalpre
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Figure 3-8: Relative roof uplift pr
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larities will normally be based on
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spread in both of those storms. Pri
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and subsequent progressive failure;
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3.2 CRITICAL FACILITIES EXPOSED TOH
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Wall coverings, soffits, and large
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oof panels were applied over metal
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3.2.2 Evaluating Critical Facilitie
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Step 2: Perform a field investigati
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3.3.1.1 SiteWhen selecting land for
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schools are required to be designed
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As part of the detailed design effo
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steel. FEMA Technical Bulletin, Cor
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a window submittal should show that
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and limited uplift resistance of de
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Figure 3-23:View looking down at th
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m For buildings that have mechanica
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sionals should also specify the att
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Figure 3-31:Door sill pan flashing
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Adjustable jamb/head weatherstrippi
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E 2112 provides guidance on the des
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Soffits: Depending on the wind dire
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mph, those used for hurricane shelt
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Figure 3-47:These four ties werenev
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m Install ties as the brick is laid
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At the hospital shown in Figure 3-5
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etween the hospital and the medical
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metal panels were attached with con
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avoid blow-off. Stainless steel or
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If the roof system is fully adhered
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Figure 3-60:View of the underside o
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ities. For FMG-insured facilities,
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Figure 3-65:The original modifiedbi
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Figure 3-66:If mechanically attache
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Loads and Attachment Methods 9Infor
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Fan cowling attachment: Fans are fr
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Condenser attachment: In lieu of pl
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Boiler and exhaust stack attachment
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Figure 3-78:Collapsed hospital ligh
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Figure 3-80:The antenna tower atthi
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Table 3-3: Risk Reduction Design Me
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Table 3-3: Risk Reduction Design Me
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Chapter 4 for information on the pe
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Figure 3-83:Open walkways donot pro
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ASTM E 1996 specifies five missile
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ASCE 7 refers to ASTM E 1996 for mi
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For interior non-load-bearing mason
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m For structural metal roofs, it is
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Mechanically attached and air-press
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Figure 3-92:To avoid walkway padblo
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3.4.4.2 Mechanical PenthousesBy pla
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To enhance the wind performance of
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Mechanically attached single-ply me
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to power generation stations and by
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occupants can have bottled water pr
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Table 3-4: Recommendations for Desi
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Strong and violent tornadoes can ge
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For critical facilities located in
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Retrofitting a shelter space inside
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funds are not available for strengt
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Figure 3-106:The school’s built-u
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3.6.2 Building EnvelopeThe followin
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Shutters are typically a more econo
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semblies with laminated glass assem
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Figure 3-116:The edge nailer on top
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Figure 3-118:The antenna at thishos
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3.7 Checklist for BuildingVulnerabi
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3.8 References and Sources ofAdditi
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American Society for Testing and Ma
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FEMA, Attachment of Brick Veneer in
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accompanied with suggestions on pos
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Hurricane Katrina emphasized the fa
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The water supply was interrupted an
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Hancock Medical Center in Bay St. L
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Figure 4-4:Penthouse at the WestJef
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Figure 4-6:Repair of EIFS wallcover
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The primary cause of window breakag
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Page 323 and 324: 4.2.8 Mechanical and ElectricalSyst
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Page 331 and 332: 4.3 EDUCATIONAL FACILITIES4.3.1 Bac
Page 333 and 334: 4.3.2 Effects of FloodingThe most d
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Page 337 and 338: St. Stanislaus High School in Bay S
Page 339 and 340: 4.3.6 Structural SystemsMost of the
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Page 343 and 344: Figure 4-27:Metal roof covering pee
Page 345 and 346: ment, especially HVAC systems, was
Page 347 and 348: Figure 4-30:Interior damage at Char
Page 349 and 350: m Doors should be designed to meet
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Page 353 and 354: 4.4.3 Effects of High WindsThe high
Page 355 and 356: Figure 4-33:Jackson County EOCFigur
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Page 359 and 360: Figure 4-37:Back Bay Fire Company#3
Page 361 and 362: Figure 4-39:Gulfport Fire Station #
Page 363 and 364: Third District Fire Station in New
Page 365 and 366: Figure 4-44:Roof damage at HancockC
Page 367 and 368: underground tank for toilets and wa
Page 369 and 370: Figure 4-47:Generator mounted atgra
Page 371: Figure 4-49:Broken communicationsma
Page 375 and 376: FISFMAFMGFMRHMGPIBCICCICULPSMEPSMOB
Page 377 and 378: Building, enclosed. A building that
Page 379 and 380: Floodway. The channel and that port
Page 381 and 382: OOpenings. Apertures or holes in th
Page 383 and 384: FEMA Mitigation ProgramscFederal fu
Page 385 and 386: Table 1: Side-by-Side of FEMA Progr
Page 387 and 388: todial care facilities (including t
Page 389 and 390: aged windows with impact-resistant
Page 391: tions, and wastewater treatment pla
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47.5 MB - The Whole Building Design Guide

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