TS 88-23 ISO 128-23

TS 88-23 ISO 128-23 is a technical drawing standard focused on the line types used in construction documentation and on how those lines are applied across architectural, structural, building services, civil engineering, landscape, and town planning drawings. Within the ISO 128 family, this part treats the line not just as a graphic stroke, but as a core carrier of technical meaning in drawings.

The line language used in construction drawings

In technical drafting, line type is used to distinguish visible edges, hidden detail, axes, section boundaries, dimensioning elements, and auxiliary indications. In construction work this distinction matters especially because a single drawing may need to communicate architectural layout, structural information, services, infrastructure, and site planning at the same time. When line character, thickness, and intended use are selected consistently, drawings become easier to read and more coherent across disciplines.

Areas of documentation covered

• Architectural drawings and building layout documentation
• Structural engineering drawings and load-bearing system representation
• Building services and technical building documentation
• Construction, landscape, and town planning drawings

This listing is the Turkish edition prepared from ISO 128-23:1999 and defines the line types to be used in the listed forms of construction documentation. Together with the other parts of ISO 128, it sits within the broader framework of general presentation rules for technical drawings, making it a useful reference where consistent notation and graphic clarity are needed across project teams.