Skyscraper shorter than the W350 Project despite having 10 more stories. Wooden skyscrapers are estimated to be around a quarter of the weight of an equivalent reinforced-concrete structure as well as reducing the building carbon footprint by 60–75%. Buildings have been designed using cross-laminated timber (CLT) which gives a higher rigidity and strength to wooden structures. CLT panels are prefabricated and can therefore speed up building time. Skyscraper A skyscraper is a continuously habitable high-rise building that has over 40 floors and is taller than approximately . Historically, the term first referred to buildings with 10 to 20 floors in the
Chinese encyclopedia Britannica". Among major online Chinese encyclopedias, for Standard Chinese, the two largest both began in 2005, the Baike.com Encyclopedia and the Baidu Encyclopedia. There is the Chinese Wikipedia (2002–present), and for varieties of Chinese, there are Cantonese, Mindong, Minnan, Wu, and Gan Wikipedias, as well as the Classical Chinese Wikipedia. Lastly, there are modern English-language encyclopedias of China. For example, the 1991 2nd edition of the "Cambridge Encyclopedia of China", the 2009 "Brill's Encyclopedia of China", and the 5-volume 2009 "Berkshire Encyclopedia of China". Chinese encyclopedia Chinese encyclopedias comprise both Chinese-language encyclopedias and foreign-language ones about China or Chinese topics.