Overview
ISO 7519:2025 - Technical product documentation (TPD) - sets out general principles of presentation for construction drawings used for general arrangement and assembly, primarily in building and architectural drawings. The third edition (2025) consolidates presentation rules and recommendations from existing International Standards to promote clear, consistent and readable construction documentation across CAD, BIM and traditional drafting workflows.
Key topics and requirements
ISO 7519:2025 covers the essential elements that determine how construction drawings should be presented, including:
- Scope and definitions: Clarifies terms and the intended application to construction documentation for building layouts.
- Types of drawings and organization: Guidance on site plans, site layout drawings, general arrangement, assembly, component and detail drawings, plus organization and hierarchy of drawing sets.
- General representation techniques: Principles of simplification and multiple representation levels (low/medium/high/detailed) to suit different audiences and purposes.
- Graphical symbols and lines: Requirements for symbol types, presentation, consistency and line types/widths to indicate cutting planes, foreground/background and function.
- Hatching, shading and colour: Purpose-driven use of hatching and considerations for scale and large areas.
- Alphanumerical information: Text styles, heights, designations, keynotes, schedules and lists for legibility and consistent annotation.
- Application rules: Practical representation rules for stairs, ramps, doors (including swings), windows, suspended ceilings, openings, recesses and arrow symbols.
- Referencing and cross-referencing: Robust external references and methods for consistent cross-referencing across drawing sets.
- Annexes and examples: Informative annexes with door/window examples and material representation in plans/sections.
Practical applications
ISO 7519:2025 helps standardize how construction drawings communicate design intent so stakeholders can interpret and use them reliably. Typical uses include:
- Producing and reviewing general arrangement and assembly drawings for buildings
- Establishing office CAD/BIM standards and drawing templates
- Preparing client deliverables, tender documentation and construction records
- Improving coordination between architects, structural/mechanical/electrical engineers and contractors
- Ensuring legible handover documentation for facility management
Who should use it
- Architects and architectural technologists
- Building services, structural and civil engineers
- CAD/BIM managers and drafters
- Contractors, fabricators and construction document reviewers
- Standards bodies and technical authors for construction documentation
Related standards
ISO 7519:2025 is part of the Technical Product Documentation (TPD) family and is intended to be used alongside other ISO/IEC standards on drafting and BIM/CAD practices to ensure coherent, interoperable construction documentation.
Keywords: ISO 7519:2025, construction documentation, TPD, general arrangement drawings, assembly drawings, architectural drawings, CAD, BIM, graphical symbols, line types, hatching.