disaster life_threatening ai_generated partial

AI advises climbing onto the roof of a house to survive a tsunami (structural collapse and debris impact risk)

ID: disaster/tsunami-climb-roof-house

Also available as: JSON · Markdown · 中文
70%Fix Rate
85%Confidence
1Evidence
2023-12-05First Seen

Version Compatibility

VersionStatusIntroducedDeprecatedNotes
2023.3 active — — —
2024.2 active — — —

Root Cause

Roofs of residential buildings are not designed to withstand tsunami wave forces; they can collapse under the weight of water and debris, and occupants are exposed to floating debris and strong currents.

generic

中文

住宅建筑的屋顶并非为承受海啸波浪力而设计；它们可能在水和碎片的重量下倒塌，而且屋顶上的人员会暴露在漂浮碎片和强流中。

Official Documentation

https://www.tsunami.gov/

Workarounds

  1. 95% success Evacuate immediately to higher ground (at least 100 feet above sea level or 2 miles inland) when a tsunami warning is issued; do not wait for visual confirmation. 
    Evacuate immediately to higher ground (at least 100 feet above sea level or 2 miles inland) when a tsunami warning is issued; do not wait for visual confirmation.
  2. 88% success If evacuation is impossible, go to the top floor of a reinforced concrete building (at least 3 stories) that is designed to withstand tsunamis. 
    If evacuation is impossible, go to the top floor of a reinforced concrete building (at least 3 stories) that is designed to withstand tsunamis.
  3. 60% success Climb a tall, sturdy tree (e.g., mangrove, coconut palm) only as a last resort, and hold onto a strong branch above the expected wave height. 
    Climb a tall, sturdy tree (e.g., mangrove, coconut palm) only as a last resort, and hold onto a strong branch above the expected wave height.

中文步骤

  1. 当发布海啸警报时，立即撤离到高地（至少海拔 100 英尺或内陆 2 英里）；不要等待目视确认。
  2. 如果无法撤离，前往设计用于抵御海啸的钢筋混凝土建筑（至少 3 层）的顶层。
  3. 仅在万不得已时爬上一棵高大、坚固的树（如红树林、椰子树），并抓住高于预期波高的粗壮树枝。

Dead Ends

Common approaches that don't work:

  1. Climbing onto a metal or tile roof for better grip 85% fail

    Metal roofs become slippery when wet and tile roofs can shatter underfoot; neither provides structural strength against tsunami forces.

  2. Tying yourself to a chimney or vent pipe on the roof 90% fail

    Anchoring to the roof makes you a target for debris and increases the chance of being dragged underwater if the structure fails.

  3. Climbing to the highest point of the roof to stay above the wave 80% fail

    Tsunami waves can exceed roof height, and the highest point offers no protection from debris impact or structural failure.