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( => ( => ( => ISO 4157 [pageid] => 2671494 ) =>

ISO 4157 is an "ISO "standard for construction drawings and designation systems.

It is composed of 3 parts:

Main definitions:

Standard samples:

00 Ground floor
05 5th floor
-2 2nd basement floor
#0215 2nd floor, room 15

See also[edit]

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