Building Act Article 66
During construction of a building of two or more storeys, where the part being constructed is less than 2.5m away from the road borderlines or base borderlines, or during construction of a building of five or more storeys, appropriate palings shall be established to prevent articles from dropping down.
中文原文 建築法第66條
二層以上建築物施工時，其施工部分距離道路境界線或基地境界線不足二公尺半者，或五層以上建築物施工時，應設置防止物體墜落之適當圍籬。