Wind Resistant Roofing
ENTRY DATE: 27.04.2015 | LAST UPDATE: 27.04.2015
CATEGORIES:
- Disaster Prevention
- Reinforcing facilities and structures
TECHNOLOGIES MATURITY:
Applicable immediately
Technology Owners:
- Government e.g. Bangladesh Ministry of Food and Disaster Management/ Comprehensive Disaster Management Programme
- Implementing agencies e.g. ADPC, CARE
- Research organisations such as BRAC University
Needs Address
Disaster risk reduction
Adaptation effects
- Provide strengthened infrastructural refuge during and after extreme events
- Protect lives by reducing exposure to extreme events
- Protect assets, thereby enhancing economic resilience
Overview and Features
Roof loss leads to house destruction in extreme climatic events such as cyclones and storms. Wind-proofed roofing provides enhanced protection during storms and resilience. Proofing is achieved via four elements: aerodynamic form, connection to structure, securely fixed covering and regular maintenance.
Figure: Basic design of wind resistant roofing indicating hipped, gable and lean-to designs (Source: Mayo, 1988 in ADPC, 2005)
Cost
Costs for equipment and maintenance
Energy source
Human resources for construction and maintenance
Ease of maintenance
Requires ongoing maintenance, particularly after storms and other extreme events, including reparation and repairing of fixtures
Technology performance
- Costs are less for initial installation than for reparation following a flood
- Stronger materials such as steel brackets enable enhanced wind-proof roofing but are often more expensive.
Considerations
- Technical design should be conducted by experts
- Policy support via building codes can help to ensure the design and construction of roof is appropriate
Co-benefit, suitability for developing countries
- Improve the quality and value of housing
- Technical knowledge and skills, systems for securing quality of installation or preventing malpractice
Information Resources
ADPC, 2005. Handbook on Design and Construction of Housing for Flood-prone Rural Areas of Bangladesh. Asian Disaster Preparedness Center. Available from: http://www.buildingtrustinternational.org/flooding%20and%20bangladesh.pdf [21 January 2015]
Ohno,T. 2007. Development of Wind-Resistant Construction Systems in Southeast. International Journal for Housing Science 31(3): 173-181. Available from: http://www.housingscience.org/html/publications/pdf/31-3-2.pdf [21 January 2015]
Tamura, Y. 2009. Wind-Induced Damage to Buildings and Disaster Risk Reduction. The Seventh Asia-Pacific Conference on Wind Engineering, November 8-12, 2009, Taipei, Taiwan. Available from: http://www.iawe.org/Proceedings/7APCWE/KS1.pdf [21 January 2015]
Vrolijks, L. 1998. Disaster Resistant Housing in Pacific Island Countries. South Pacific Disaster Reduction Programme. Available from: http://ict.sopac.org/VirLib/DM0004.pdf [21 January 2015]