ISO 7519:2024
Technical product documentation (TPD)

Standard No.

ISO 7519:2024

Release Date

2024

Published By

International Organization for Standardization (ISO)  IX  /  ISO

Status

Be replaced

Replace By

ISO 7519:2025

Latest

ISO 7519:2025

Introduction

Analysis of the core content of the standard

As an international standard in the field of architectural drawing, ISO 7519:2024 systematically specifies the presentation principles of general layout drawings and assembly drawings. This standard is applicable to various drawing methods such as CAD and BIM. The main technical innovations include:

Technical Dimension	1991 Edition	2024 Edition Update
Drawing Type Definition	Basic Classification	New Site Plan and Site Layout Layer Levels
Representation Method	Simple Line Specification	Four-level Simplified Representation System + Detailed Representation Method
Technical Adaptation	Traditional Drawing	Compatible with CAD/BIM digital workflow

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Drawing types and technical points

1. Drawing hierarchy system

The standard establishes 6 levels of drawing hierarchy:

1. Site plan (geographical positioning)
2. Site layout (building positioning)
3. General layout (building as a whole)
4. Assembly drawing (functional system)
5. Component drawing (independent components)
6. Detailed drawing (connection nodes)

2. Simplified representation method

According to the purpose and scale requirements of the drawing, four levels of simplified representation are adopted:

• Low-level simplification: only the outline of the object is displayed (scale ≤1:100)
• Intermediate simplification: Displays the main internal layers (scale 1:50-1:20)
• Advanced simplification: Displays all visible features (scale ≥1:10)
• Detailed representation: Includes manufacturing details and connectors

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Implementation suggestions

1. Line application specifications

The standard strictly stipulates the application scenarios of 11 line types:

• Cutting surface contour: Type 01.3 extra thick solid line
• Hidden contour: Type 02.2 thick dashed line
• Elevation change: Type 04.2 thick dotted line

2. Door and window representation case

The standard annex provides a standardized scheme for the door and window swing representation:

• Swing door: 30° or 90° opening angle representation
• Sliding door: dotted line represents the sliding trajectory
• Revolving door: concentric circle symbol representation

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Technical evolution analysis

Compared with the 1991 version, the new version of the standard has major technological breakthroughs:

1. Digital adaptation: New presentation specifications for digital content such as point cloud data and BIM models
2. Material representation: Section representations for 12 materials such as concrete and masonry are provided in Annex B
3. Symbol system: Establish graphic symbol application principles consistent with ISO 81714

ISO 7519:2024 Referenced Document

• ISO 10209 Technical product documentation — Vocabulary — Terms relating to technical drawings, product definition and related documentation
• ISO 128-2 Technical product documentation (TPD) — General principles of representation — Part 2: Basic conventions for lines
• ISO 128-3 Technical product documentation (TPD) — General principles of representation — Part 3: Views, sections and cuts
• ISO 3098-1 Technical product documentation - Lettering - Part 1: General requirements
• ISO 6707-1 Buildings and civil engineering works — Vocabulary — Part 1: General terms
• ISO 7200 Technical product documentation - Data fields in title blocks and document headers
• ISO 9431 Construction drawings; spaces for drawing and for text, and title blocks on drawing sheets

ISO 7519:2024 history

• 2025 ISO 7519:2025 Technical product documentation (TPD) — Construction documentation — General principles of presentation for general arrangement and assembly drawings
• 2024 ISO 7519:2024 Technical product documentation (TPD)
• 1991 ISO 7519:1991 Technical drawings; construction drawings; general prinicples of presentation for general arrangement and assembly drawings

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