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The decision whether to construct a tunnel using a TBM or using a drill and blast method includes a number of factors. Tunnel length is a key issue that needs to be addressed because large TBMs for a rock tunnel have a high capital cost, but because they are usually quicker than a drill and blast tunnel the price per metre of tunnel is lower. [ 2 ]
An alternative to opportunistic selective inventory projects is Kohl's (1982) assertion that circulation statistics, book search statistics, and ILL statistics can be useful tools in identifying areas as possible selective inventory areas. He writes, "areas in need of an inventory can be identified through the use of predictive data". [3]
The new edition aligns CAWS with the Unified Classification for the Construction Industry which was published in 1997. The Common Arrangement is the authoritative UK classification of work sections for building work, for use in arranging project specifications and bills of quantities. Over 300 work sections are defined in detail to give:
This COBie MVD, produced under contract to the Construction Engineering Research Lab, was created by the buildingSMART international Model View Definition support group, and was based on IFC 4. [9] The main standard contains the project's Information Delivery Manual and Model View Definition as well as business case and implementation resources.
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 ...
The Construction Specifications Institute (CSI) is a United States national association of more than 6,000 construction industry professionals who are experts in building construction and the materials used therein. The institute is dedicated to improving the communication of construction information through a diversified membership base of ...
Portable blast systems use either a welded pressure vessel, to overcome nozzle backpressure, to store and transfer abrasive media into a connected blast hose from a higher pressure differential, or use a non-pressurized hopper, which utilizes a process called dual induction, which conveys abrasive media to a tandem blast nozzle using an air ...
These inventory ledgers contain information on cost of goods sold, purchases, and inventory on hand. Perpetual inventory management systems allow for a high degree of control of the company's inventory by management. Perpetual inventory management is generally used by companies who have the ability to scan the inventory items.