TS 8797

TS 8797 is a terminology standard for building construction that defines the general terms needed to understand and use tolerances correctly. It brings together the basic vocabulary used when dimensional tolerances are examined, specified, and checked for conformance.

Where tolerance terminology matters in building work

In construction practice, a tolerance describes the acceptable variation from a nominal size or geometric feature. Because design, fabrication, installation, and measurement each introduce their own variability, precise terminology reduces ambiguity in technical communication. This standard covers the general foundational terms and definitions related to building construction tolerances, helping designers, contractors, inspectors, and measurement specialists use the same concepts consistently.

Measurement, conformance, and interpretation

In general technical terms, tolerance work relies on linked ideas such as measured value, nominal value, deviation, limits, and conformance assessment. A vocabulary standard like this provides a common framework for describing how a building element differs from its target dimension and how that difference is interpreted. TS 8797 organizes that conceptual language for building construction. From the title and scope alone, it should not be read as prescribing a specific test method, numerical limit, or mandatory verification procedure.

• General terms and definitions for building construction tolerances
• Common vocabulary for studying, specifying, and using dimensional tolerances
• Conceptual basis for checking conformity and calculating dimensions
• Published as an equivalent to ISO 1803-1:1985