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The twenty-foot equivalent unit (abbreviated TEU or teu) is a general unit of cargo capacity, often used for container ships and container ports. [1] It is based on the volume of a 20-foot-long (6.1 m) intermodal container, a standard-sized metal box that can be easily transferred between different modes of transportation, such as ships, trains, and trucks.
The underlying unit of size given in ISO 2848 for modular coordination is the 'basic module'. [1] The 'basic module' is represented in the standards by the letter M, and has two standard definitions. It is primarily defined as 100 mm (3.937 inches), with the proviso that in countries using imperial units it is defined as 4 inches (101.6 mm). [2]
The base unit in the International System of Units (SI) is the meter, defined as "the length of the path travelled by light in vacuum during a time interval of 1 ⁄ 299792458 seconds." [ 4 ] It is approximately equal to 1.0936 yd .
As with metric-based guide numbers, foot-based guide numbers are a two-factor unit of measure except the units are f‑number⋅feet. To convert a guide number given in meters to feet, divide by 0.3048. To convert a guide number given in feet to meters, multiply by 0.3048.
[a] This system underlies the International System of Units (SI) [b] but does not itself determine the units of measurement used for the quantities. The system is formally described in a multi-part ISO standard ISO/IEC 80000 (which also defines many other quantities used in science and technology), first completed in 2009 and subsequently ...
ISO 6346 is an international standard covering the coding, ... ISO Length Codes: Second size code character: ... 20 ft (6,096 mm) 2 8 ft 6 in (2,591 mm) 3
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It serves as a style guide for using physical quantities and units of measurement, formulas involving them, and their corresponding units, in scientific and educational documents for worldwide use. The ISO/IEC 80000 family of standards was completed with the publication of the first edition of Part 1 in November 2009. [1] [2]