自2003年爆發急性嚴重呼吸道症候群（Severe Acute Respiratory Syndrome, 簡稱SARS）後，住宅建築之排水系統存在病媒傳播之可能性與排水性能的重要性受到重視；本研究提出一套簡易排水系統風險分析工具與評估等級，可適用於檢測部分亞洲地區具有可能發生病媒傳播之住宅建築。本研究採用失效模式與效應分析（Failure Mode Effects Analysis, FMEA）之概念，並釐清出排水系統主要風險因子包括與排水立管連結之衛生器具，排水管路系統設計，通風環境，設備壽期與維護。運用蒙地卡羅模擬檢證案例之可靠性，並將此模擬工具，依照建築屋齡與高度之普查數據，比較台灣與香港地區建築之病媒傳播風險，結果顯示，高層建築之環境，排水系統亦有較高之傳播風險。本評估系統可實際並有效評估現有或新建建築物之排水系統病媒傳播風險，可有助於提供給政府、設計者和使用者，對於評估排水系統性能之狀態，以作為改善之依據。

This study proposes a simple risk analysis tool and evaluation level for the probable infection due to a contaminated drainage stack in residential high-rise buildings in some Asian cities which have equivalent drainage systems. The methodology would follow the conception of FMEA (Failure Mode Effects Analysis). In particular, key risk factors including connections between appliance and stack, the plumbing system, ventilation, equipment life and maintenance were surveyed and used to evaluate the overall risk associated in high-rise residential buildings with Monte-Carlo simulations. With the proposed tool, regional risks of infection due to the building drainage systems were estimated, with respect to the city building age and height profiles. The results showed that a city with high-rise environment would associate a higher spreading risk due to the drainage system.
Following the outbreak of SARS (Severe Acute Respiratory Syndrome) in early 2003, the operational performance of drainage system in high-rise residential buildings has become a major concern. The assessment system would be practical and sensible for evaluating the infection risk in building drainage systems for both existing buildings and new construction. The assessment tool may provide the government, designers and the occupants a source of reference to judge drainage system performance in either new construction or the existing building, so that improvements would be conducted.

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