社會住宅使用整體浴室技術，在室內裝修設計之循環經濟成本效益分析

Cost-Benefit Analysis Of Circular Economy In Social Housing From The Unit Bathroom Of Decoration Design

社宅頻繁出租的特性，及室內裝修屬於耐用年限相較主結構體短的工程，在建築生命週期中可能因為不同用戶使用習慣、使用需求改變室內裝修改建或增建等原因，衛浴設備及管線的老舊汰換變更位置，造成拆除廢棄等資源及成本的浪費。整體浴室預鑄化設備在國外住宅建築已行之有年，對於提升住宅品質及資源有效利用有相當大助益，本研究擬提出整體浴室做為比較對象，以台北市南港機廠社會住宅二房型單元為研究對象，模擬房型及廁所變動造成不同的拆除重建費用，比較使用整體衛浴在社會住宅50年生命週期維護整建更新成本效益，另增加同層排水技術提升住宅防疫性能等次要因素做為比較分析。研究結果發現，整體浴室比較傳統浴室，初始成本整體浴室高於傳統浴室，在整建維修成本、生命週期成本淨現值等分析結果，在整建頻率30年以下一次，整體浴室比傳統浴室在成本及效益上的整體表現較佳，屬於符合循環經濟標準的設備。同層排水技術提升生活品質、防疫性能，亦是未來住宅建築趨勢。

In the early stage of development, the periodic maintenance mechanism and preventive repair and renewal plan of structural ancillary facilities and equipment should be considered. The unit bathroom has been used in foreign residential buildings for many years and of great help to improve the quality of housing and effective use of resources. This study used unit bathroom for comparison, and set the possible repair type of residential 2 rooms units from Taipei Nangang Depot Public Housing .The room type and bathroom changes were simulated to understand different demolition and reconstruction costs. Comepared the initial cost and the maintenance and construction costs during the 50-year service period in the life cycle of social housing. In addition, decondary factors of same floor drain technology has been comparative analysis. The research results showed ,the initial cost of unit bathroom is higher than traditional bathroom. During the interior alteration, unit bathroom's equitment and walls don't need to be replaced. The higher demand for alteration, the more economical the unit bathroom is. The frequency changed per 30 years has few difference from between.. Service life of unit bathroom is about 30 years and can be assembled and reused. Conform the spirit of circular economy.