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
Online encyclopedia varies from proof read, to poor quality text with many optical character recognition (OCR) errors. Many encyclopaedias are available at the Internet Archive. Although the original text is viewable the machine readable text is often poor with may OCR errors. In January 1995, Project Gutenberg started to publish the ASCII text of the "Encyclopædia Britannica", 11th edition (1911), but disagreement about the method halted the work after the first volume. For trademark reasons this has been published as the "Gutenberg Encyclopedia". Project Gutenberg has restarted work on digitising and proofreading this encyclopedia; as of June 2005 it had not yet