圖書序言
1.1 Background
Hong Kong is a tiny city with a total land area of 1,104 km2, making it one of the most densely populated places in the world. It was also among the five densest urban areas in the world in 2014. Up to September 2014, the population of Hong Kong was 7,234,800, more than a double of that in 1961 (Census and Statistics Department, 2014).
The number of domestic buildings boomed with the rapid population growth and migration rate of Hong Kong between 1961 and 1990. A steady growth was observed in line with the constant demand of domestic buildings. In order to meet the accommodation needs, society was increasingly concerned about the quantity over quality of the buildings. As of 31 December 2014, there were 43,163 private buildings (excluding New Territories Exempted Houses) in Hong Kong among which 23,797 were non-domestic buildings and domestic buildings over 3 storeys in height. There were 15,581 private buildings, which aged 30 or above. The lack of regulation on governing maintenance work of aged private buildings also posed severe building dilapidation problems. There were a total of 143 accidents due to unsafe building structure, causing 101 deaths and 435 injuries during year 1990 and 2001 (CIRC, 2001).