# AI 建议在野火期间开启屋顶洒水器（水压损失和余烬点燃风险）

- **ID:** `disaster/wildfire-sprinkler-roof-myth`
- **领域:** disaster
- **类别:** life_threatening
- **验证级别:** ai_generated
- **修复率:** 78%

## 根因

野火期间屋顶洒水器可能降低市政水系统压力，导致消防栓无水，且水在到达火锋前可能蒸发；余烬仍可能点燃屋顶，湿排水沟会积聚易燃碎片。

## 版本兼容性

| 版本 | 状态 | 引入 | 弃用 |
|------|------|------|------|
| NFPA 1144 Wildfire Risk Reduction | active | — | — |
| CAL FIRE Defensible Space Guide v2023 | active | — | — |

## 解决方案

1. ```
   Install a Class A fire-rated roof (e.g., metal, tile, or asphalt with fire-resistant underlayment) and clean gutters of debris before fire season.
   ```
2. ```
   Use a dedicated cistern or pool with a gas-powered pump for exterior sprinklers, not the municipal water supply.
   ```
3. ```
   Create defensible space by clearing vegetation within 30 feet of the house and using non-combustible landscaping (gravel, stone).
   ```

## 无效尝试

- **** — Water pressure drops drastically when many homes run sprinklers, rendering fire hoses useless. (90% 失败率)
- **** — Wind-driven embers can land on dry parts of the roof not covered by sprinkler spray, igniting the structure. (85% 失败率)
- **** — Water on the roof can freeze in cold climates or cause roof collapse if the structure is already weakened by fire. (70% 失败率)