Green Roof Collapse
The weight of a green roof caused the collapse of a large sports hall roof in hong kong in 2016.
Green roof collapse. On thursday november 21st 2013 an evolving green roof collapsed over top a latvian supermarket. The rooftop that buckled only covered one area of the market however fifty four people have been pronounced dead since saturday and many more hospitalized. The static weight added is the composite total of the added layers placed above the roof deck. Sloped green roofs are a bit more complicated to design install and maintain than flat roofs and as a result people who disregard or don t know of the established fll guidelines for sloped roofs have created dangerous and costly situations ranging from mudslides to roof collapse.
Parts of the world s largest sloped green roof collapsed the day before valentine s day in 2011 after record snowfall. Green roofs require significantly more maintenance and maintenance energy compared to a standard roof. Dynamic loading comes from the retained water on the roof and any loading caused by public access. An extensive green roof on the other hand is a thinner lighter version that looks more similar to a standard roof.
Green roofs add both static and dynamic weight to a structure. It can be sloped or flat. The contractor accused of overloading a green rooftop which collapsed at city university last month may be taken to court while three senior campus staff are facing disciplinary action the post. In the wake of the disaster numerous other green roofs around the territory were removed.