sdrhcon2011 griffen

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


Lateral Loads

Wind & Seismic


Wind BasicsLIFT

PRESSURE or SUCTION

UPLIFT SLIDING SHEAR

WIND

Reactions

OVERTURNING


Lateral Loads - Wind


Lateral Loads - Seismic


Building Response Motions

• planar sway (racking)• torsional twist

racking twist

center of stiffness

Both wind & seismic


Building Response Motions

• horizontal force transfer – in-plane shear

Vmax at edges

Load

Both wind & seismic


WFCM StandardBasis for the Guides•Consensus Standard•Referenced in U.S. Building Codes•Very technical•Audience

•Designers•Building Officials


High Wind GuidesDeveloped after Hurricane Katrina•90-130 mph Exposure B•Simplified approach•Specific to wind zones


Caribbean Basin Builders’ GuideDeveloped after Haiti Earthquake•150 mph Exposure C•Seismic Category D2•Simplified approach•Panelized construction


Caribbean Basin Guide

Simple structures



Limited Size• 16’x24’• Can be joined to form

larger structures



Foundations• Needed especially in high

wind areas• Slabs predominant



Modular walls• Can be prefabricated and

shipped



Modular walls



Roof Systems


Caribbean Basin GuideTrilingual•English•Spanish•French• CWC assisted with French translation


Availability of Caribbean Guidewww.awc.org• Download

– no charge• Hard copies

– Limited quantities– Contact AWC


QUESTIONS?

Technology