FEMA 453 Design Guidance for Shelters and Safe Rooms

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Pre-heat Coil Module. This module contains pre-filters, pre-heat coil, and an outside air damper. Pre-filters selected for the system are ASHRAE 25-35 percent pleated. The building in which this system is installed has chilled water and hot water service from a central plant. Cooling-coil Module. Cooling coils and an isolation damper are contained in a module mounted on the wall between the mechanical room and stairwell. Temperature control of the pressurization air is maintained with an electronic thermostat located in the stairwell. Control Panel. The control panel as shown in Figure 3-9 has the following controls and indicators: m Start/stop switch m Status lights for the system, supply fan, and two isolation dampers m Pressure gauge indicating the pressure differential between the stairwell and the adjoining hallway CBR ThReaT pRoTeCTion Figure 3- The Class Safe Room control panel has a system start/stop switch, status indicators for dampers, and a pressure gauge. SoURCe: BaTTelle 3-
Relief Damper. In supplying filtered air from the top of the stairwell, the carbon dioxide concentration in the occupied stairwell increases with the vertical distance from the source of fresh air, because leakage paths are evenly distributed along the vertical axis. To ensure carbon dioxide levels remain within safe limits at the lowest levels of the stairwell and to facilitate removal of heat and humidity generated by the occupants, a relief damper was installed at the lowest level to maximize the flow-path length for clean air. The relief damper was adjusted to prevent the internal pressure from exceeding 0.30 iwg, a pressure above which the doors that open into the stairwell could require more than 30 pounds of force at the door handle to open (depending upon door closer force). Door Seals. Weather-type seals were installed on doors into the stairwell to minimize air leakage around the closed doors. According to blower door test results, leakage around the stairwell doors before the addition of weather-stripping and wipe seals was substantial (approximately 3,000 cfm at 0.3 iwg). Warning System. A public address system was installed in the building so that voice messages could be broadcast throughout the building to notify people at any location of an emergency. Accessibility. The stairwell offers a point of entry accessible to wheelchairs, and each landing provides an area adequate for two wheelchairs without blocking access to the door. Drinking Water. The stairwell has no accommodation for drinking water. There were plans to make water available by storing bottled water in a compartment on each landing of the stairwell. Communications. Each level of the stairwell has an emergency telephone and an intercom to provide contact with the security operations center. Cost. Total cost of the installed system was $190,000, or about $300 per person sheltered. This does not include the cost of the public 3- CBR ThReaT pRoTeCTion
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Risk Management Series Design Guida
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Any opinions, findings, conclusions
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This guidance focuses on safe rooms
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protect occupants until law enforce
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of best practices (based on current
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Project Advisory Panel: Ronald Bark
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1.7.1.1. Tornado.or.Short-term.Shel
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2.6.6. RM1.and.RM2.Reinforced.Mason
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4.5. Community.Shelter.Operations.P
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FIgUREs chapter 1 Figure.1-1.. Terr
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Figure.2-16.. Spray-on.elastomer.co
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chapter 4 Figure.4-1.. Preparedness
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in response to the manmade CBRE thr
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decides not to chance fate and cons
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Although operational security measu
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Table 1-2: Safe Evacuation Distance
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Figure 1-1 terrorism by event 1980
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odorless. Their effects occur mainl
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Figure 1-3 radioactive materials sm
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Table 1-3: Correlation of ISC Level
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Table 1-4: ISC CBR Levels of Protec
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m It is partially shielded by the s
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m Single-use shelters. Single-use s
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structure or a new structure to be
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m Territoriality (promotes a sense
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Figure 1- examples of internal shel
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Figure 1-9 examples of internal she
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loading depending upon the building
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model building codes all have provi
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Figure 1-10 national Weather servic
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operations and maintenance plan. De
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For tornado shelters, the most crit
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Reference Standard 6-1 Photolumines
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every building should have an emerg
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Three methods are followed for the
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partitions for areas of about 12,00
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the 2006 editions of nFPa 101, Life
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Figure 1-13 operations Zones, casua
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Figure 1-1 nrP-cis emergency decont
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Figure 1-1 example of Pentagon stag
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Figure 1-19 site and evidence colle
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2.1 OVerVieW Structural deSign crit
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affect the hazard potential of the
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2.2.1 Blast effects in low-rise Bui
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As an example, panelized constructi
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2.3 hardened cOnStructiOn 2.3.1 Str
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Protective design further requires
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deformed, and transfer them to the
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pressures, such that they overcome
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façade materials intact and attach
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2.4 neW cOnStructiOn The design of
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Blast-resistant detailing requires
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the slab, the slab reinforcement mu
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spacing of 16 inches that extends i
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In order for the glazing to realize
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precast panels, the spacing of the
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to a column or a vehicle-borne expl
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without any means of attachment or
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polycarbonate glazing can be mixed
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Rigid catch bar systems were design
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stainless steel cables connected wi
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Alternatively, an unreinforced maso
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Figure 2- 9 Metal stud blast wall I
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2.5.3 checklist for retrofitting is
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Shearwalls consist of straight or d
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Light wood frame structures do not
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eam column joints, all member stres
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Steel moment frame structures provi
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Steel frames with infill masonry wa
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esponse to 500 pounds of TNT at a s
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to provide ductile performance. The
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Unless sited in a seismic zone, con
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Page 148 and 149: uilding. Locating the shelter in th
Page 150 and 151: Unreinforced load-bearing masonry b
Page 152 and 153: damage in response to 500 pounds of
Page 154 and 155: Floor slabs within an interior stai
Page 156 and 157: 3.1 oVeRVieW This chapter describes
Page 158 and 159: m Class 2. This class also includes
Page 160 and 161: may be necessary for people to occu
Page 162 and 163: 3.3 SaFe RooM CRiTeRia This section
Page 164 and 165: interior room is preferable to a ro
Page 166 and 167: m Penetrations. Measures for reduci
Page 168 and 169: Figure 3- hinged covers facilitate
Page 170 and 171: enclosure subjected to wind and buo
Page 172 and 173: Many models of these indoor air pur
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Page 176 and 177: Table 3-2: Leakage per Square Foot
Page 178 and 179: 3.5 opeRaTionS anD MainTenanCe For
Page 180 and 181: m Turn on a radio or TV in the safe
Page 182 and 183: Tape, plastic, and carbon dioxide d
Page 184 and 185: m Isolation dampers. Correct damper
Page 186 and 187: 3.7 CoMMiSSioninG a CLaSS 1 CBR SaF
Page 188 and 189: have been appropriately placed to p
Page 190 and 191: m To develop an understanding of th
Page 192 and 193: CBR ThReaT pRoTeCTion Figure 3- Tas
Page 194 and 195: Task 4. Determine How Much Filtered
Page 198: address system or the single-switch
Page 201 and 202: the Homeland security digital Libra
Page 203 and 204: the national Fire Protection associ
Page 205 and 206: From established reporting mechanis
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Page 209 and 210: m Weapons of Mass Destruction-Civil
Page 211 and 212: dHs/FEma and the office for domesti
Page 213 and 214: The 48 seconds do not include the t
Page 215 and 216: Figure 4-5 High-rise buildings and
Page 217 and 218: m In the initial phase (hours and d
Page 219 and 220: designated. The following is a list
Page 221 and 222: m Coordinating shelter evacuation p
Page 223 and 224: 4.5.5 notification manager The Noti
Page 225 and 226: Table 4-1: Shelter Equipment and Su
Page 227 and 228: Toilets would be needed by the occu
Page 229 and 230: 4.5.8.7 Emergency Equipment Credenz
Page 231 and 232: FEma’s United states Fire adminis
Page 233 and 234: 4.7.3 event safety procedures The f
Page 235 and 236: 4.9 training and inFormation Employ
Page 237 and 238: Bureau of Alcohol, Tobacco, Firearm
Page 239 and 240: Federal Emergency Management Agency
Page 241 and 242: Phan, L.T., and Simiu, E. 1998. The
Page 243 and 244: Army TM 5-853-4, Security Engineeri
Page 245 and 246: Corps of Engineers Guide Specificat
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Addresses workplace vulnerability t
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State of Florida Shelter Plan, Flor
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Management (2003) http://floridadis
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UL 586, High-Efficiency, Particulat
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C CA California C&C components and
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F FBI Federal Bureau of Investigati
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J JFO Joint Field Office K kb kilob
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O O.C. on center OG outer garments
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U UBC Building Code UCRL University
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FEMA 453 Design Guidance for Shelters and Safe Rooms

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