855773644-LEED-v5-BD-C-Reference-Guide-Launch-Edition - Page 148
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Projects may ensure that backup power systems are in place to maintain critical functions, such as communications, security, and fire safety systems, during projecting flooding events.
Additionally, developing integrated drainage systems to efficiently manage projected excess flooding is a solution. These systems must be designed to work holistically with the landscape and built environment, ensuring that floodwaters are managed in ways that minimize damage. An integrated drainage system can combine both traditional and innovative solutions, such as upgrading or expanding existing stormwater systems, like gutters, drains, and culverts, to accommodate larger volumes of water. Other measures include installing permeable pavements and porous materials, as well as integrating sump pumps in basements or lower levels of buildings to prevent water accumulation.
Retrofitting existing structures is another key strategy to enhance building resilience to future flood risks. This process may involve reinforcing foundations, installing flood barriers, and incorporating water-resistant materials to protect critical equipment and prevent water infiltration.
Flood-resistant materials Using flood-resistant materials according to FEMA standards or local equivalent, such as fasteners, connectors, and products designed to withstand moisture, minimizes damage from water intrusion by preventing rotting and corrosion. [72] The application of sealants and coatings to prevent projected water infiltration into structures is essential.
Flood barriers Flood barriers around buildings, including permanent walls, portable barriers, or automated systems that activate when floodwaters are detected, can effectively redirect water away from vulnerable areas, thereby protecting properties and ensuring public safety. Additionally, restoring or preserving natural landscapes such as wetlands and mangroves can enhance the resilience of communities. These ecosystems act as natural buffers, provide habitat for wildlife, and contribute to biodiversity.
Green infrastructure Designing and incorporating GI solutions is vital for effectively managing storm surge and runoff. GI, which includes features like rain gardens, permeable pavements, green roofs, and wetlands, plays a crucial role in mitigating these risks.
72 Federal Emergency Management Agency, (2025, January), Flood Damage-Resistant Materials Requirements for Buildings Located in Special Flood Hazard Areas in accordance with the National Flood Insurance Program, https://www.fema.gov/sites/default/files/documents/fema_tb_2_flood_damage-resistant_materials_requirements_01–22-2025.pdf.
U.S. Green Building Council LEED v5 Reference Guide for Building Design and Construction, April 2025 Launch Edition 138