These types of walls are reinforced with steel and are more expensive to engineer. There are two advantages of using gravity walls: they are easy to build and easy to maintain.Ĭantilever walls, on the other hand, are shaped like a letter “T” turned upside-down. A gravity wall relies solely on its massive weight to hold back the earth on one side and the water on the other. The two most common types of retaining walls are gravity walls and cantilever walls. Select the Correct Type of Retaining Wall Click on the dots for more information.2. The following interactive diagram highlights a number of flood resilient building features. (Acknowledgement: James Davidson Architect, Woolloongabba, Queensland) Widening the stairs from the lower level of your home to allow you to easily move furniture upstairs ahead of a flood to protect your possessions.įor some ideas on possible flood resilient home features click the hotspots on the home below, then talk to a licensed builder or architect about what measures could be incorporated into your home. Installing louvres in the walls of the lower level of your home to enable water to easily flow through the home during a flood and reduce damage. Wet-proofing the lower level of a home by installing polished concrete or tiled floors can significantly reduce clean up and recovery efforts following floods. There are some practical building upgrades you can take to make your home more flood resilient. (Source: p116 Flood Resilient Building Guidance for Queensland Homes) Practical building upgrades for flood resilience The average Benefit Cost Ratios ranges from 1.7 to 27.3 and the average payback period ranges from 1 to 14 years depending on building type, treatment adopted and likely frequency of flooding. In these scenarios, flood resilient homes are economically viable under all circumstances modelled up to a 0.5% (1 in 200) AEP. The economic case for flood resilient retrofitting of homes becomes even greater under future climate change scenarios. Benefits of resilient homes under future climate change scenarios Benefits of resilient homes in lower flood risk areasĪs the expected flood frequency decreases, so too does the case for resilient homes. The average Benefit Cost Ratios range from 1.9 to 19.6 and the average payback periods range from one to 12 years depending on building type, treatment adopted and likely frequency of flooding. Benefits of resilient homes in high flood risk areasįlood resilient homes are a viable option for flood events up to and including the 1% (1 in 100) AEP. A cost benefit analysis was undertaken as part of the development of the Flood Resilient Building Guidance for Queensland Homes to understand the return on investment for flood resilient homes under different circumstances. It also provides clear guidance on flood resilient design principles, strategies, construction details, materials and the expected benefits and costs of flood resilient design.Ĭost benefit analysis for flood resilient design and constructionįlood resilient design and construction can reduce the long-term costs for home owners by reducing expected costs associated with flood damage and insurance premiums. It is suitable for building industry professionals, state and local authorities, and owners of residential properties in flood prone areas across Queensland. It provides information about reducing the impact of floods on Queensland homes and families. The guideline is based on lessons learned through consultation with the building industry, local governments and Queensland Government agencies. The Flood Resilient Building Guidance for Queensland Homesprovides information about improving the flood resilience of new and existing Queensland homes. It involves adapting the design, construction and materials incorporated into buildings to minimise damage caused by floodwaters. Flood resilient design is one of the many ways Queenslanders can build their resilience to floods. We can’t stop floods from occurring, but we can take steps to reduce their impact. Queensland is the most disaster impacted state in Australia, with flooding being the disaster event that happens most frequently. Queensland Strategy for Disaster Resilience.Damage Assessment and Reconstruction Monitoring.FAQs about disaster funding activations.Our role in disaster funding activations.Funding for individuals, communities and businesses.Natural Disaster Relief and Recovery Arrangements (NDRRA).Event specific (exceptional circumstances) assistance.State Disaster Relief Arrangements (SDRA).MARS portal for funding program applications.Disaster Recovery Funding Arrangements (DRFA).Queensland Reconstruction Authority Main navigation Toggle main menu visibility
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