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storm surge flooding. The massive storm surge devastated parts ofNorthbay Elementary School in Bay St. Louis, Mississippi, a singlestorybuilding located in a mapped flood zone. Exterior wallscollapsed, and most of the interior and contents were destroyed(see Figure 4-19).Figure 4-18:Pineville ElementarySchool shelter had tobe evacuated when thefloodwaters started to rise.Figure 4-19:Exterior walls at NorthbayElementary SchoolOBSERVATIONS ON THE PERFORMANCE OF CRITICAL FACILITIES4-31
St. Stanislaus High School in Bay St. Louis, although located righton the coast, was on naturally higher ground, and only the firstfloors were affected by the storm surge. Within a few months afterthe storm, the second floors in some of the buildings had been repaired,including restored power, water, and sanitary service, andwere back in use (see Figure 4-20).Figure 4-20:Lower floors washed awayby the storm surge at St.Stanislaus campusConsiderable damage occurred in low-lying areas that wereflooded by storm surge ranging in depth from 2 to 8 feet. Suchwas the case at D’Iberville Middle School in D’Iberville, Mississippi,which sustained severe damage, including the destructionof many exterior walls, when water rose to nearly 8 feet above thefloor. Fortunately, it was not used as a shelter, unlike the nearbyD’Iberville High School, which is a designated shelter. The highschool is built on higher ground and was not affected by flooding.4.3.5 Architectural DesignGenerally, educational facilities have centrally located corridors(with classrooms or other spaces on both sides) that have ready accessto sanitary facilities, are at least 8 to 10 feet wide, and are freeof all obstructions. These features make them ideally suited for4-32 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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Page 296 and 297: Table 3-8: Checklist for Building V
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Page 300 and 301: 3.8 References and Sources ofAdditi
Page 302 and 303: American Society for Testing and Ma
Page 304: FEMA, Attachment of Brick Veneer in
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Page 309 and 310: Hurricane Katrina emphasized the fa
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Page 313 and 314: Hancock Medical Center in Bay St. L
Page 315 and 316: Figure 4-4:Penthouse at the WestJef
Page 317 and 318: Figure 4-6:Repair of EIFS wallcover
Page 319 and 320: The primary cause of window breakag
Page 321 and 322: West Jefferson Medical Center lost
Page 323 and 324: 4.2.8 Mechanical and ElectricalSyst
Page 325 and 326: covering the fill cap and all vent
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Page 329 and 330: mary and West Jefferson Medical Cen
Page 331 and 332: 4.3 EDUCATIONAL FACILITIES4.3.1 Bac
Page 333 and 334: 4.3.2 Effects of FloodingThe most d
Page 335: Figure 4-17:Broken windows atD’Ib
Page 339 and 340: 4.3.6 Structural SystemsMost of the
Page 341 and 342: The St. Stanislaus High School camp
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
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Page 369 and 370: Figure 4-47:Generator mounted atgra
Page 371 and 372: Figure 4-49:Broken communicationsma
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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
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todial care facilities (including t
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aged windows with impact-resistant
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tions, and wastewater treatment pla
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