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Long-term Housing
Solutions in Disaster-
prone Areas
Natural Disasters
       Haiti Earthquake
       • January 12, 2010
                                                               Hurricane Katrina
                                                               • August 28, 2005




Copyright © 2011 American Wood Council. All rights reserved.
Lateral Loads
       Wind &
       Seismic




Copyright © 2011 American Wood Council. All rights reserved.
Wind Basics
                                                                                       LIFT




    WIND                                                             PRESSURE or SUCTION




   Reactions



              UPLIFT                                   OVERTURNING     SLIDING             SHEAR


Copyright © 2011 American Wood Council. All rights reserved.
Lateral Loads - Wind




Copyright © 2011 American Wood Council. All rights reserved.
Lateral Loads - Seismic




Copyright © 2011 American Wood Council. All rights reserved.
Building Response Motions
      Both wind & seismic
      • planar sway (racking)                                  center of stiffness

      • torsional twist




                                      racking                     twist

Copyright © 2011 American Wood Council. All rights reserved.
Building Response Motions
     Both wind & seismic
     • horizontal force transfer
               – in-plane shear


              Vmax at edges



                                                               Load



Copyright © 2011 American Wood Council. All rights reserved.
WFCM Standard
       Basis for the Guides
       •Consensus Standard
       •Referenced in U.S. Building Codes
       •Very technical
       •Audience
           •Designers
           •Building Officials




Copyright © 2011 American Wood Council. All rights reserved.
High Wind Guides
       Developed after Hurricane Katrina
       •90-130 mph Exposure B
       •Simplified approach
       •Specific to wind zones




Copyright © 2011 American Wood Council. All rights reserved.
Caribbean Basin Builders’ Guide
       Developed after Haiti Earthquake
       •150 mph Exposure C
       •Seismic Category D2
       •Simplified approach
       •Panelized construction




Copyright © 2011 American Wood Council. All rights reserved.
Caribbean Basin Guide
      Simple structures




Copyright © 2011 American Wood Council. All rights reserved.
Caribbean Basin Guide
      Limited Size
      • 16’x24’
      • Can be joined to form
        larger structures




Copyright © 2011 American Wood Council. All rights reserved.
Caribbean Basin Guide
      Foundations
      • Needed especially in high
        wind areas
      • Slabs predominant




Copyright © 2011 American Wood Council. All rights reserved.
Caribbean Basin Guide
      Modular walls
      • Can be prefabricated and
        shipped




Copyright © 2011 American Wood Council. All rights reserved.
Caribbean Basin Guide
      Modular walls




Copyright © 2011 American Wood Council. All rights reserved.
Caribbean Basin Guide
      Roof Systems




Copyright © 2011 American Wood Council. All rights reserved.
Caribbean Basin Guide
       Trilingual
       •English
       •Spanish
       •French
          • CWC assisted with French
            translation




Copyright © 2011 American Wood Council. All rights reserved.
Availability of Caribbean Guide
       www.awc.org
       • Download
                 – no charge
       • Hard copies
                 – Limited quantities
                 – Contact AWC




Copyright © 2011 American Wood Council. All rights reserved.
QUESTIONS?




Copyright © 2011 American Wood Council. All rights reserved.

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Sdrhcon2011 griffen

  • 1. Long-term Housing Solutions in Disaster- prone Areas
  • 2. Natural Disasters Haiti Earthquake • January 12, 2010 Hurricane Katrina • August 28, 2005 Copyright © 2011 American Wood Council. All rights reserved.
  • 3. Lateral Loads Wind & Seismic Copyright © 2011 American Wood Council. All rights reserved.
  • 4. Wind Basics LIFT WIND PRESSURE or SUCTION Reactions UPLIFT OVERTURNING SLIDING SHEAR Copyright © 2011 American Wood Council. All rights reserved.
  • 5. Lateral Loads - Wind Copyright © 2011 American Wood Council. All rights reserved.
  • 6. Lateral Loads - Seismic Copyright © 2011 American Wood Council. All rights reserved.
  • 7. Building Response Motions Both wind & seismic • planar sway (racking) center of stiffness • torsional twist racking twist Copyright © 2011 American Wood Council. All rights reserved.
  • 8. Building Response Motions Both wind & seismic • horizontal force transfer – in-plane shear Vmax at edges Load Copyright © 2011 American Wood Council. All rights reserved.
  • 9. WFCM Standard Basis for the Guides •Consensus Standard •Referenced in U.S. Building Codes •Very technical •Audience •Designers •Building Officials Copyright © 2011 American Wood Council. All rights reserved.
  • 10. High Wind Guides Developed after Hurricane Katrina •90-130 mph Exposure B •Simplified approach •Specific to wind zones Copyright © 2011 American Wood Council. All rights reserved.
  • 11. Caribbean Basin Builders’ Guide Developed after Haiti Earthquake •150 mph Exposure C •Seismic Category D2 •Simplified approach •Panelized construction Copyright © 2011 American Wood Council. All rights reserved.
  • 12. Caribbean Basin Guide Simple structures Copyright © 2011 American Wood Council. All rights reserved.
  • 13. Caribbean Basin Guide Limited Size • 16’x24’ • Can be joined to form larger structures Copyright © 2011 American Wood Council. All rights reserved.
  • 14. Caribbean Basin Guide Foundations • Needed especially in high wind areas • Slabs predominant Copyright © 2011 American Wood Council. All rights reserved.
  • 15. Caribbean Basin Guide Modular walls • Can be prefabricated and shipped Copyright © 2011 American Wood Council. All rights reserved.
  • 16. Caribbean Basin Guide Modular walls Copyright © 2011 American Wood Council. All rights reserved.
  • 17. Caribbean Basin Guide Roof Systems Copyright © 2011 American Wood Council. All rights reserved.
  • 18. Caribbean Basin Guide Trilingual •English •Spanish •French • CWC assisted with French translation Copyright © 2011 American Wood Council. All rights reserved.
  • 19. Availability of Caribbean Guide www.awc.org • Download – no charge • Hard copies – Limited quantities – Contact AWC Copyright © 2011 American Wood Council. All rights reserved.
  • 20. QUESTIONS? Copyright © 2011 American Wood Council. All rights reserved.