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FEMA P757 2009

$14.95

FEMA P-757 – Hurricane Ike in Texas and Louisiana: Building Performance Observations, Recommendations, and Technical Guidance

Published By Publication Date Number of Pages
FEMA 2009 458
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PDF Pages PDF Title
1 Hurricane Ike in Texas and Louisiana
2 Inside cover
3 Title Page
4 Members of the Mitigation Assessment Team
5 Executive Summary
6 Mitigation Assessment Team (MAT)
7 Assessment Observations
Flood Damage
8 Wind Damage
9 Critical Facilities Damage
Recommendations
Flood
11 Wind
Critical Facility
13 Table of Contents
19 List of Figures
35 List of Tables
37 Chapter 1:
Introduction
38 1.1 Hurricane Ike – The Event
41 1.1.1 Summary of Damage and Economic Loss
43 1.1.2 Timeline and History of Hurricane Ike
45 1.2 Coastal Flooding
1.2.1 Shoreline Characteristics
1.2.2 Subsidence
46 1.2.3 Hurricane Ike High Water Marks
48 1.3 Wind Hazard Analysis and Discussion
51 1.3.1 H*Wind
52 1.3.2 HAZUS-MH
56 Hurricane Ike Tornadoes
57 1.4 Historic Hurricanes
59 Hurricane Rita
Hurricane Katrina
Hurricane Andrew
Hurricane Alicia
60 Hurricane Allen
Hurricane Celia
Hurricane Betsy
Hurricane Carla
61 Hurricane Audrey
Great Galveston Hurricane
62 Future Hurricanes
63 1.5 FEMA Mitigation Assessment Teams
1.5.1 Purpose of the MAT
1.5.2 Team Composition
64 1.5.3 Methodology
67 Chapter 2: Floodplain Management Regulations, Building Codes, and Standards
2.1 Floodplain Management Regulations
68 2.1.1 Flood Studies and Flood Maps
70 2.1.1.1 Accuracy of Flood Insurance Studies and Flood Insurance Rate Maps
72 2.1.1.2 Implication of FIRMs on Rebuilding and Building Safety
2.1.1.3 Higher Regulatory Standards
2.2 Building Codes and Standards
74 2.2.1.1 Flood Requirements in the IBC and the IRC
75 2.2.1.2 Flood Requirements in ASCE 7-05
76 2.2.1.3 Flood Requirements in ASCE 24-05
77 2.2.1.4 Flood Requirements in Texas
2.2.1.5 Flood Requirements in Louisiana
2.2.2 Wind Requirements
2.2.2.1 Wind Requirements in the IBC
2.2.2.2 Wind Requirements in Texas
81 Example of Design Load Changes Over Time
83 2.2.2.3 Wind Requirements in Louisiana
2.2.3 HUD-Manufactured Housing Design Standards
85 2.2.3.1 Manufactured Housing in Texas
2.2.3.2 Manufactured Housing in Louisiana
86 2.2.4 Galveston Residential Hurricane Resistance Study, 1990
87 2.2.4.1 Ike MAT Observations of Houses in the 1990 Galveston Study
91 2.2.4.2 MAT Summary of Findings Regarding the Galveston Study
92 2.3 Texas Windstorm Program
2.3.1 Texas Department of Insurance
93 2.3.2 Basic Tenets of the Texas Windstorm Code
95 2.3.3 Texas Windstorm Program – Insights and Opinions
96 2.4 Enhanced Code Construction
99 Chapter 3:
Performance of Residential Buildings (Flood and Wind), One- to Two-Family and Multi-Family
3.1 Structural Performance
100 3.1.1 Foundation Performance
103 3.1.1.1 Foundation Function 1: Elevate the Building
109 3.1.1.2 Foundation Function 2: Resist Scour and Erosion
115 3.1.1.3 Foundation Function 3: Provide a Continuous Load Path to the Ground
119 3.1.1.4 Foundation Function 4: Resist Flood Loads
125 3.1.2 Main Wind Force Resisting System
3.1.2.1 High Winds
128 3.1.2.2 Combination of Loads – MWFRS and C&C
130 3.1.2.3 Load Paths
137 3.1.3 Elevation and Freeboard
138 3.1.4 Siting Effects on Structural Performance
140 3.2 Envelope Damage
141 3.2.1 Roof Systems
142 3.2.1.1 Asphalt Shingles
148 3.2.1.2 Metal Panels
149 3.2.1.3 Tile
150 3.2.2 Non-Load-Bearing Walls and Wall Coverings
153 3.2.2.1 Brick Veneer
155 3.2.2.2 Vinyl Siding
162 3.2.2.3 Fiber Cement Siding
166 3.2.2.4 Wood and Hardboard Siding
167 3.2.3 Doors
3.2.4 Windows and Shutters
173 3.2.5 Soffit and Roof Ventilation
3.2.5.1 Soffits
175 3.2.5.2 Ridge Vents
176 3.2.5.3 Gable End Vents
177 3.2.6 Exterior-Mounted Equipment
179 3.3 Other Damage
3.3.1 Breakaway Walls
182 3.3.2 Sheathing on the Underside of Elevated Buildings
185 3.3.3 Parking Slabs and Grade Beams
189 3.3.4 Mold and Contamination
3.3.5 Other Issues and Problems
190 3.4 Manufactured Housing
191 3.4.1 Texas
193 3.4.2 Louisiana
3.4.2.1 Cameron and Vermilion Parishes
3.4.2.2 Jefferson Parish
195 3.4.2.3 Lafourche Parish
3.4.2.4 Manufactured Home Anchoring and Support Systems
196 3.5 Mitigation Projects
199 Chapter 4:
Performance of Critical Facilities
200 Special Flood-Related Provisions for Critical Facilities
201 Special Wind-Related Provisions for Critical Facilities
202 4.1 Schools/Shelters
4.1.1 Crenshaw Elementary and Middle School (Port Bolivar, TX)
206 4.1.2 South Cameron Parish High School (Grand Chenier, LA)
207 4.1.3 Johnson’s Bayou School (Cameron, LA)
210 4.2 Hospitals/Health Centers
4.2.1 San Jacinto Methodist Hospital (Baytown, TX)
215 4.2.2 Winnie Community Hospital (Winnie, TX)
218 4.2.3 University of Texas Medical Branch (Galveston, TX)
225 4.2.4 South Cameron Parish Hospital (Cameron, LA)
229 4.2.5 Hackberry Rural Medical Clinic (Hackberry, LA)
230 4.2.6 Oceanview Transitional Care Center (Texas City, TX)
233 4.3 First Responder Facilities (Police/Fire/EOC)
4.3.1 Houston Transtar – Regional EOC (Houston, TX)
238 4.3.2 Deer Park Police Station (Deer Park, TX)
240 4.3.3 Port Neches Fire Station (Port Neches, TX)
243 4.3.4 High Island Fire Station (High Island, TX)
244 4.3.5 Louisiana Fire Stations
248 4.4 Other Government Buildings
4.4.1 U.S. Army Corps of Engineers Administration Building (Galveston, TX)
249 4.4.2 Federal Courthouse and Post Office (Galveston, TX)
252 4.4.3 Tiki Island City Hall (Tiki Island, TX)
254 4.4.4 Terrebonne Parish Criminal Justice Complex (Houma, LA)
257 Chapter 5: Performance of Buildings in Houston’s Central Business District
258 5.1 Areas Outside Clusters A and B
262 5.2 Cluster A – JP Morgan Chase Area
268 5.2.2 Granite Veneer

5.2.3 Roof Systems and Rooftop Equipment
269 5.2.4 Nearby Building Performance
272 5.3 Cluster B – Chevron Center Area
273 5.3.1 Glazing
276 5.3.2 Roof Systems and Rooftop Equipment
277 5.3.3 Damage at Nearby Buildings
281 5.4 Vegetative Roofs
283 Chapter 6: Conclusions
284 6.1 Residential
6.1.1 Flood
287 6.1.2 Wind
290 6.2 Critical Facilities
6.2.1 Flood
291 6.2.2 Wind
294 6.3 Houston’s Central Business District
297 Chapter 7:
Recommendations
7.1 Residential
298 7.1.1 Flood
302 7.1.2 Wind
303 7.2 Critical Facilities
304 7.2.1 Flood
7.2.2 Wind
306 7.3 Further Studies and Standards Revisions
7.3.1 Flood
7.3.2 Wind
309 7.3.3 Critical Facilities
315 Chapter 8:
Planning for a Sustainable Coast
316 8.1 Geologic Hazards and Coastal Communities
8.1.1 Geologic Hazards That Threaten Coastal Communities
317 8.1.1.1 Subsidence and Relative Sea-Level Rise
320 8.1.1.2 Shoreline Erosion
322 8.1.1.3 Dunes and Wetland Loss
323 8.1.2 Discussion of Conflicts Between Coastal Communities and Geological Hazards
324 8.2 Existing Planning Resources and Programs
8.2.1 Texas
Coastal Erosion Program and Coastal Texas 2020 Report
325 Geohazards Map Program
8.2.2 Louisiana
Coast 2050: Toward a Sustainable Coastal Louisiana
326 Coastal Wetlands Planning, Protection and Restoration Act
Coalition to Restore Coastal Louisiana
8.2.3 Nationwide Initiatives
Smart Growth
329 Historic Preservation
8.3 Recommendations for Rebuilding After Ike
8.3.1 Specific to Local Communities
Sustainable Land Use Planning Recommendations
330 Protection of the Natural Environment
331 8.3.2 General Recommendations – State Level
332 8.3.3 General Recommendations – Federal Level
333 Appendix A: Acknowledgments

Appendix B: References and FEMA Publication List
347 Appendix C:
Acronyms and Glossary
Acronyms
A

B
348 C
D
E
F
349 G
H
I
L
350 M
N
O
351 P
S
T
U
352 V
W
353 Glossary
357 Appendix D: Hurricane Ike Recovery Advisories
359 Attachment of Brick Veneer in High-Wind Regions
363 Design and Construction in Coastal A Zones
369 Designing for Flood Levels Above the BFE
377 Enclosures and Breakaway Walls
381 Erosion, Scour, and Foundation Design
389 Minimizing Water Intrusion Through Roof Vents in High-Wind Regions
397 Metal Roof Systems in High-Wind Regions
403 Siding Installation in High-Wind Regions
411 Appendix E:
High Water Marks
413 High Water Marks in Texas
427 High Water Marks in Louisiana
FEMA P757 2009
$14.95