TS ISO 1791

TS ISO 1791 is a building terminology standard that defines the terms needed for designing, constructing, and manufacturing components for buildings arranged according to a modular coordination approach. Its core purpose is to establish a shared vocabulary aligned with the modular coordination principles and rules set out in ISO 2848, so that dimensions and component relationships are understood consistently across design, production, and site execution.

The role of terminology in modular coordination

Modular coordination is a design approach that organises building dimensions and component interfaces around a predetermined module. In practice, this helps align openings, sizing, and component compatibility across architectural design, prefabrication, and construction work. By defining the concepts used in this field, TS ISO 1791 reduces ambiguity and supports a common technical language for different disciplines working on the same building project.

Technical scope covered by the standard

• Terms necessary for the design and construction of buildings
• Terms necessary for the design and manufacture of components used in such buildings
• Vocabulary connected to the modular coordination principles and rules of ISO 2848
• Common technical language for the field of building materials and structures

This document is primarily a vocabulary standard rather than a product or performance standard. It does not focus on how to test a component; instead, it helps users apply the terms component, module, coordination, and design in a consistent technical sense. In building work, that consistency matters because drawings, specifications, manufacturing information, and installation documents need to match one another clearly.