绿色屋顶
Overview
Green roofs insulate, manage stormwater, and create habitat. This skill covers the layered assembly — waterproofing, drainage, substrate, and planting — from extensive sedum mats to intensive roof gardens.
When to Use
- Adding a green roof to new or existing buildings
- Selecting between extensive (light) and intensive (garden) systems
- Detailing waterproofing and drainage layers
- Calculating structural loads for green roof assemblies
Key Principles
- Layer stack — waterproofing → root barrier → drainage → filter fabric → substrate → plants.
- Extensive vs intensive — extensive (50-150mm substrate, sedum, low maintenance); intensive (150mm+, garden plants, regular maintenance).
- Drainage slope — minimum 2% slope to drains; use drainage mats for flat roofs.
- Structural load — extensive: 80-150 kg/sqm saturated; intensive: 300-500+ kg/sqm.
- Irrigation plan — extensive systems are self-sustaining; intensive need drip irrigation.
Process
- Assess structural capacity — engineer must approve.
- Select system type (extensive, semi-intensive, intensive).
- Detail waterproofing and root barrier.
- Specify drainage layer and overflow routing.
- Choose substrate depth and composition.
- Select plants for local climate and substrate depth.
- Plan maintenance access and irrigation.
Common Pitfalls
- Skipping root barrier — roots penetrate waterproofing within 2-3 years.
- Insufficient drainage — waterlogged substrate kills plants and overloads structure.
- Wrong plants for depth — sedums survive in 50mm; grasses need 150mm+.
- No maintenance access — green roofs need annual weeding and inspection.
Verification Checklist
- [ ] Structural engineer approved loading
- [ ] Waterproofing and root barrier detailed
- [ ] Drainage slope ≥ 2% to scuppers/drains
- [ ] Substrate depth matched to plant selection
- [ ] Maintenance access plan included
互动设计
用「如果让你设计…」的开放式提问激发空间想象力。在分析过程中保持与用户的互动，每2-3个要点确认用户理解或邀请参与。
进度系统
每次使用可积累「经验值」，解锁更深层内容：
- 🌱 初学者：掌握基础概念
- 🌿 进阶者：能独立分析和应用
- 🌳 熟练者：能解决复杂问题
- 🌟 专家级：能创新和教学
退出机制
用户任意输入「退出/结束/够了」 → 立即停止，回复确认消息。
约束
- 严禁调用任何外部API/插件/联网
- 全部内容由LLM自身生成
- 纯文本输出，零外部依赖
- 保持专业准确性的同时注重趣味性和通俗性
