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A tunnel boring machine (TBM), also known as a "mole" or a "worm", is a machine used to excavate tunnels. Tunnels are excavated through hard rock, wet or dry soil, or sand , each of which requires specialized technology.
Business letters can have many types of content, for example to request direct information or action from another party, to order supplies from a supplier, to point out a mistake by the letter's recipient, to reply directly to a request, to apologize for a wrong, or to convey goodwill. A business letter is sometimes useful because it produces a ...
It is a rapidly growing sector of the construction and civil engineering industry. It can be defined as "a family of methods, materials, and equipment capable of being used for the installation of new or replacement or rehabilitation of existing underground infrastructure with minimal disruption to surface traffic, business, and other activities."
The opening sentence or opening line stands at the beginning of a written work. The opening line is part or all of the opening sentence that may start the lead paragraph . For older texts the Latin term incipit ('it begins') is in use for the very first words of the opening sentence.
A Allocation of costs is the transfer of costs from one cost item to one or more other cost items. Allowance - a value in an estimate to cover the cost of known but not yet fully defined work. As-sold estimate - the estimate which matches the agreed items and price for the project scope. B Basis of estimate (BOE) - a document which describes the scope basis, pricing basis, methods ...
Most sections of the Regional Connector tunnel were built using the tunnel boring machine (TBM) construction method, though some sections (especially the locations of the three future subway rail stations) use the cut-and-cover construction method with an emphasis on maintaining as much road access as possible during construction.
The following terms are in everyday use in financial regions, such as commercial business and the management of large organisations such as corporations. Noun phrases
The Tuen Mun - Chek Lap Kok TBM otherwise known as Qin Liangyu or more formally, the Mixshield S-880 was the world's largest tunnel boring machine launched in June 2015 by Herrenknecht in Germany. [ 1 ] [ 2 ] The TBM was used to drill a 5 km tunnel connecting Tuen Mun to the Hong Kong International Airport , part of the Tuen Mun–Chek Lap Kok ...