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Squarefoot eMagazine 245

6 E D I T O R ' S N O T E 編者的話 It’s not easy being green. The collapse of the grass-covered roof of a sports hall at City University left every Hongkonger shocked. This rare accident in Hong Kong not only received city-wide concern for vegetated roof safety, but also highlighted the lack of government supervision of rooftop greeneries in the city. It’s understood the university has been pumping some HK$700,000 into roof greening projects over the past four years, including the one on top of the 26-year-old Chan Tai Ho Multi-Purpose Hall, which tumbled down on 20 May, despite the fact the roof was not supposed to hold heavy loads. No doubt the university has to bear the blame, particularly after admitting it failed to submit building plans of the green roof structures to the Buildings Department for approval. Its builder Sinoway Construction Engineering and supervisor KC Surveyors should also be clarifying to the public about the structure of the green roof, yet both have kept their mouths shut. It is sobering, startling and shameful, that such an elementary error would occur in an urban city such as Hong Kong, while the urban green revolution is in full swing worldwide. In London, the massive construction of the “Garden Bridge” across the Thames will begin this summer; Bordeaux is expecting a 50-metre tall wooden building crowned with roof gardens, while a new 65-storey glass skyscraper is springing up in New York City which will see a green pathway ascending in a spiral on the building’s façade. This green-roof failure has taught construction engineers in Hong Kong a valuable lesson about rushing into roof greening. They have now learnt the hard way that a durable green roof may not be as easy as laying turf on a lawn. Jennifer Chan Editor 綠色生活從來都得來不易。 城市大學塌天花事件令全城震驚,這個罕見事故不 僅收到全市關注,更反映出政府對城市綠化天台缺乏 監督。 該了解,城市大學過去四年不斷投資合共70多萬元在 校園進行綠化工程,包括涉事的陳大河綜合會堂。 該 會堂已有26年樓齡,而屋頂並不適宜大型綠化。 無疑城市大學需要負上最大責任,尤其大學承認當年 並未向屋宇署入則。 負責該項目的兩家機構包括威華設計工程有限公司及 陳佐堅測量師行有限公司一直都未有就事件開腔。 當城市綠化在全世界正進行得如火如荼之際,香港竟 然犯上如此低級的錯誤,這不單發人深省,更加令人 羞愧。 在倫敦,一座橫跨泰晤士河的「花園橋」將會在今個 夏天動工; 波爾多正計劃打造一座50米高,設有屋頂 花園的木製建築;而紐約將會有一棟65層高的摩天大 樓,外牆被環繞著一層層布滿了綠色植物的階梯。 城市大學綠化屋頂項目的失敗給香港建築工程師上了 寶貴的一課—屋頂綠化實在急不來。一個耐用的綠化 屋頂並不像鋪草皮一樣的簡單。


Squarefoot eMagazine 245
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