Engineering

1
Engineering

• Design Issues for EOCs, Hurricane Shelters and
  other Essential Facilities

2
Florida Emergency Operations Centers Design and
Evaluation Criteria

• Danny Kilcollins, FPEM
• Planning Manager
• Division of Emergency Management

3
Features of a Survivable EOC
4
Minimum Hurricane Safety Criteria for Critical
Facilities
5
ARC 4496 Hurricane Hazards

• Wind
• Storm Surge Flooding
• Rainfall Flooding
• Hazardous Materials

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High Performance Design Criteria DOE-STD-1020
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DOE-STD-1020 Natural Hazards

• Wind
• Flooding
• Earthquake

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Hurricane Wind Design
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DOE 1020 Wind Design
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Return Period Years
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ASCE 7-02
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Florida Building Code Basic Wind Speeds and
Windborne Debris Impact Regions
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Florida Building Code Basic Wind Speeds and
Windborne Debris Impact Regions
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Basic Wind Speed Conversions
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1,000-yr Return Period
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1,000-yr Recurrence Wind Speeds for Florida
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Fla. PC 3 Wind Design Criteria
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TORNADO EVENTS IN FLORIDA
F0
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10,000-yr Return Period
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10,000-yr Recurrence Wind Speeds for Florida
21
Fla. PC 4 Wind Design Criteria
22
Probable Minimum Central Pressure Limit Estimate
for Hurricanes
23
Probable Minimum Central Pressure Limit Estimate
for Hurricanes Source K. Emanuel (1996)
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Minimum Central Pressure to Wind Velocity
Conversion

• Source Hurricanes and Typhoons Past, Present
  and Future Landsea, etal
• 880 mb 190 mph (232 mph, 3-sec gust)
• 885 mb 185 mph (226 mph, 3-sec gust)
• 890 mb 180 mph (220 mph, 3-sec gust)
• 900 mb 170 mph (208 mph, 3-sec gust)
• 910 mb 165 mph (202 mph, 3-sec gust)

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Windborne Debris Impact Resistance Criteria
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Representative Wind Design Criteria

• Applies to the EOC and essential ancillary
  structures and service equipment
• Wind Load Design per ASCE 7 Standard
• Load Factor Reductions per (draft) ICC 500
• Minimum Design Wind Speed 190 mph, 3-second
  gust
• Wind Importance Factor, I1.00
• Exposure Category C
• Directionality Factor, Kd1.00
• Internal Pressure Coefficient, GCpi 0.18/-0.18

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Representative Wind Design Criteria

• The EOC designated as a threshold building, and
  special structural inspections required
• Special inspections conducted in compliance with
  section 553.79, Florida Statutes and other
  applicable statutes, laws and rules

28
Representative Wind Design Criteria

• Design Windborne Debris Missile 15 lb 2x4
  propelled at 50 mph (74 ft/sec)
• Momentum 34 lb-sec
• Energy 1,275 ft-lb
• Design missile applies to all exterior enclosure
  components, claddings and assemblies (i.e.,
  walls, roofs, louvers, windows, doors, etc.)
• Design missile applies to enclosure surfaces
  located within 60 feet in height above finish
  grade

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Summary of Wind Storm Design Criteria
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Comparison of Hurricane Wind Codes Standards
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Tornado Wind Design
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FEMA 361 Tornado Winds
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FEMA 361 Wind Zones
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TORNADO EVENTS IN FLORIDA
F0
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Representative Tornado Wind Design

• Applies to the EOC and essential ancillary
  structures and service equipment
• Wind Load Design per ASCE 7 Standard
• Load Factor Reductions per FEMA 361
• Minimum Design Wind Speed 200 mph, 3-second
  gust
• Wind Importance Factor, I1.00
• Exposure Category C
• Directionality Factor, Kd1.00
• Internal Pressure Coefficient, GCpi 0.55/-0.55
• Atmospheric Pressure Change (APC) or venting
  reqd

36
Representative Wind Design Criteria

• The EOC designated as a threshold building, and
  special structural inspections required
• Special inspections conducted in compliance with
  section 553.79, Florida Statutes and other
  applicable statutes, laws and rules

37
Representative Wind Design Criteria

• Design Windborne Debris Missile 15 lb 2x4
  propelled at 100 mph (147 ft/sec)
• Momentum 68 lb-sec
• Energy 5,033 ft-lb
• Design missile applies to all exterior enclosure
  components, claddings and assemblies (i.e.,
  walls, roofs, louvers, windows, doors, etc.)
• Design missile applies to enclosure surfaces
  located within 150 feet in height above finish
  grade

38
Flood Rainfall Design
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DOE 1020 Flood Criteria
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NOAA HMR No. 51 and No. 52Probable Maximum
PrecipitationEstimates
41
24-hour PMP _at_ 10 sq.mi. Basin
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72-hour PMP _at_ 10 sq.mi. Basin
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Max. Observed Point Rainfall IllustrationSource
Unknown
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Estimated 24-hour Rainfall Rates w/Recurrence
Intervals
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Conversion of 10 sq.mi. PMPs to 1 sq.mi. PMPs
47
1-hour PMP _at_ 1 sq.mi. Basin
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Estimated 1-hour Rainfall Rates w/Recurrence
Intervals
49
Summary of Flood Design Criteria
50
Summary of Flood Design Criteria
51
Storm Surge Flooding

• SLOSH Storm Surge Model
• Category 5 inundation depth/elevation, NGVD
• Maximum Envelope of Water
• Margin of Error /- 20
• Category 5 elev. 20 Probable Maximum
  Inundation

52
Storm Surge Flooding

• Fla. Performance Category 3 Cat. 5 15
• Fla. Performance Category 4 Cat. 5 20
• Performance suggested per county based on PC 4
  (10,000-yr) Wind Map
• Design wind speeds at coast that are greater than
  or equal to 190 mph (3-sec. gust) Cat. 5 20
• Design wind speeds at coast that are less than
  190 mph (3-sec. gust) Cat. 5 15

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Representative Flood Design Criteria

• Applies to lowest floor for the EOC and essential
  ancillary structures and service equipment
• Finished Floor Elevation NGVD determined by
• Category 5 storm surge elev. 20
• BFE 3.0 feet
• 500-yr elevation 2.0 feet
• Highest recorded flood elevation 3.0 feet
• Whichever flood elevation is highest

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Representative Flood Design Criteria

• The site (point maximum, one square mile)
  hydrologic design shall ensure that the EOC and
  essential ancillary structures and service
  equipment are not flooded due to a 24 hour, 37.0
  inch rainfall event applied over a precedent 24
  hour, 100-year rainfall event
• Opinion of design professional is acceptable
• Basin-wide analysis not required

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Representative Flood Design Criteria

• Where secondary (emergency) roof drains or
  scuppers are required by the Florida Building
  CodePlumbing, the secondary system shall be
  sized for a rainfall rate of eleven (11.0) inches
  per hour

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Earthquake Design
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Earthquake 10,000-yr Design Criteria for Florida
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Earthquake 10,000-yr Design Criteria for Florida
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Anti-Terrorism Design
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USAF Installation Force Protection Guide
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Is Blast Hardening Reqd?
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Minimum Anti-Terrorism Standards for Buildings
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Design of Buildings to Resist Progressive Collapse
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FEMA CPG 1-20 / May 1984
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FEMA CPG 1-20 EOC Staff Size Estimate/Community
Size
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FEMA CPG 1-20 EOC Staff Size Estimate/Community
Size
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Electrical Power Restoration
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