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Engineering

Engineering. Design Issues for Essential Facilities and Shelters. Florida Emergency Operations Centers Design and Evaluation Criteria. Danny Kilcollins, FPEM Planning Manager Division of Emergency Management. Features of a Survivable EOC.

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Engineering

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  1. Engineering Design Issues for Essential Facilities and Shelters

  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

  6. High Performance Design Criteria: DOE-STD-1020

  7. DOE-STD-1020 Natural Hazards • Wind • Flooding • Earthquake

  8. Hurricane Wind Design

  9. DOE 1020 Wind Design

  10. Return Period Years

  11. ASCE 7-02

  12. Florida Building Code – Basic Wind Speeds and Windborne Debris Impact Regions

  13. Basic Wind Speed Conversions

  14. 1,000-yr Return Period

  15. 1,000-yr Recurrence Wind Speeds for Florida

  16. Fla. PC 3 Wind Design Criteria

  17. TORNADO EVENTS IN FLORIDA F0

  18. 10,000-yr Return Period

  19. 10,000-yr Recurrence Wind Speeds for Florida

  20. Fla. PC 4 Wind Design Criteria

  21. Probable Minimum Central Pressure Limit Estimate for Hurricanes; Source: K. Emanuel (1996)

  22. 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)

  23. Representative Wind Design Criteria • Applies to the EOC and essential ancillary structures and service equipment • Wind Load Design per ASCE 7 Standard • Minimum Design Wind Speed = 190 mph, 3-second gust • Wind Importance Factor, I=1.00 • Exposure Category = C • Directionality Factor, Kd=1.00 • Internal Pressure Coefficient, GCpi= +/-0.18

  24. 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

  25. Representative Wind Design Criteria • Design Windborne Debris Missile = 15 lb 2x4 propelled at 50 mph (74 ft/sec) • 34 lb-sec of momentum • 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

  26. Tornado Wind Design

  27. FEMA 361 – Tornado Winds

  28. FEMA 361 Wind Zones

  29. TORNADO EVENTS IN FLORIDA F0

  30. Flood & Rainfall Design

  31. DOE 1020 Flood Criteria

  32. NOAA HMR No. 51 and No. 52Probable Maximum PrecipitationEstimates

  33. 24-hour PMP @ 10 sq.mi. Basin

  34. 72-hour PMP @ 10 sq.mi. Basin

  35. Estimated 24-hour Rainfall Rates w/Recurrence Intervals

  36. Conversion of 10 sq.mi. PMPs to 1 sq.mi. PMPs

  37. 1-hour PMP @ 1 sq.mi. Basin

  38. Estimated 1-hour Rainfall Rates w/Recurrence Intervals

  39. Summary of Flood Design Criteria

  40. Summary of Flood Design Criteria

  41. 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

  42. 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%

  43. 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

  44. 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

  45. Representative Flood Design Criteria • Where secondary (emergency) roof drains or scuppers are required by the Florida Building Code—Plumbing, the secondary system shall be sized for a rainfall rate of eleven (11.0) inches per hour

  46. Earthquake Design

  47. Earthquake 10,000-yr Design Criteria for Florida

  48. Earthquake 10,000-yr Design Criteria for Florida

  49. QUESTIONS??? • http://floridadisaster.org/bpr/Response/engineers/index.htm

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