Sdrhcon2011 griffen

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LongLong--term Housing term Housing Solutions in DisasterSolutions in Disaster--prone Areasprone Areas

Copyright © 2011 American Wood Council. All rights reserved.

Natural DisastersHaiti 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 BasicsLIFT

PRESSURE or SUCTION

UPLIFT SLIDING SHEAR

WIND

Reactions

OVERTURNING

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

• planar sway (racking)• torsional twist

racking twist

center of stiffness

Both wind & seismic

Copyright © 2011 American Wood Council. All rights reserved.

Building Response Motions

• horizontal force transfer – in-plane shear

Vmax at edges

Load

Both wind & seismic

Copyright © 2011 American Wood Council. All rights reserved.

WFCM StandardBasis 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 GuidesDeveloped 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’ GuideDeveloped 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 GuideTrilingual•English•Spanish•French• CWC assisted with French translation

Copyright © 2011 American Wood Council. All rights reserved.

Availability of Caribbean Guidewww.awc.org• Download

– no charge• Hard copies

– Limited quantities– Contact AWC

Copyright © 2011 American Wood Council. All rights reserved.

QUESTIONS?