IFRC SRU SD Bill Flinn Safe construction through Incremental Improvements
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Safer construction through incremental improvements Bill Flinn Centre for Development and Emergency Practice CENDEP Oxford Brookes University
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Safer construction through incremental improvements Bill Flinn Centre for Development and Emergency Practice CENDEP Oxford Brookes University 8,000 houses out of a total out of a total need of 500,000 is 1.6% Cyclone Sidr, Bangladesh 2008 One year on, the total number of shelters constructed was 50,000, 10% of total need What about the 90%? The majority frequently rebuild using their own resources, often incorporating pre-disaster vulnerabilities vulnerabilities cost quality
Transcript of IFRC SRU SD Bill Flinn Safe construction through Incremental Improvements
Safer construction through incremental improvements
Bill FlinnCentre for Development and Emergency Practice CENDEPOxford Brookes University
8,000 houses out of a total out of a total
need of 500,000 is
1.6%Cyclone Sidr,
Bangladesh 2008
One year on, the total number of
shelters constructed was 50,000, 10% of
total need
What about the 90%?
The majority frequently rebuild using their own resources, often
incorporating pre-disaster vulnerabilitiesvulnerabilities
cost
quality
cost
time
expertise
capacity
quality, safety,
reduction in vulnerability
Small, but significant, incremental improvements can be easily
achieved at low cost
Hurricane strapping
Roof retrofits - Cuba
Estimated minimum fatalities
Hurricane Mitch – 1998 10,000 Central American countries
Hurricane Katrina – 2005 1,836 USA
Hurricane Wilma – 2005 8 Mexico31 USA4 Cuba
Hurricane Dennis – 2005 56 Haiti15 USA4 Cuba4 Cuba
Hurricane Gustav and Ike – 2008 150 Haiti160 USA7 Cuba
Cyclone Nargis - 2008 146,000 BurmaCyclone Sidr – 2007 4,000 Bangladesh
Source : Wikipedia
Reinforced concrete
5” precast RC column
58 km/hr
5” precast RC column with diagonal cross-bracing
100 km/hr100 km/hr100 km/hr100 km/hr
10” brick column
Category 3158 km/h
15” composite column
Category 4+194++ km/hr
Steel trusses
Advantages:• Timber is expensive
• Steel in Bangladesh is well-understood
• The design and assembly of prefabricated parts leaves little room for error.
Disadvantages:• Maintenance
• Not very amenable to self-build
• Cost? Availability?
