Quick Answer
IDEAL ELEVATED SHELTER DESIGNS IN AREAS WITH FLASH FLOOD RISK INVOLVE TREE PLATFORMS OR ELEVATED STRUCTURES WITH SLOPING ROOFS, SHELTERING FROM FLOODWATERS AND PROVIDING A SAFE HAVEN. ELEVATION OF 10-15 FEET ABOVE GROUND LEVEL PROVIDES SUFFICIENT CLEARANCE FROM FLOODWATERS. SHELTER DESIGN SHOULD ALSO CONSIDER WIND RESISTANCE AND EROSION CONTROL.
Shelter Tree Platform Construction
When constructing a shelter tree platform, consider a sturdy tree with a trunk diameter of at least 24 inches. Ensure the platform is 3-4 feet off the ground to maintain clearance from debris and floodwaters. Use durable, rot-resistant materials like cedar or cypress for the platform, and secure it to the tree using steel cables or sturdy branches.
Designing a Safe Elevated Shelter
An elevated shelter with a sloping roof can help shed rainwater and reduce the risk of collapse. Aim for a roof pitch of 3:12 to 4:12, and use materials like corrugated metal or durable canvas. Ensure the shelter’s foundation is secure and erosion-resistant, using techniques like rock anchoring or compacted gravel.
Additional Considerations
When designing an elevated shelter in areas with flash flood risk, consider the potential for strong winds and debris impact. Use materials that can withstand high winds, and design the shelter to be easily removable or collapsible if necessary. Additionally, incorporate features like a debris netting system or a secure anchoring system to prevent the shelter from being swept away by floodwaters.
Find more answers
Browse the full Q&A library by topic, or jump back to the topic this question belongs to.