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Since 2003 the ISO 128 standard contains fifteen parts, which were initiated between 1996 and 2003. It starts with a summary of the general rules for the execution and structure of technical drawings. Further it describes basic conventions for lines, views, cuts and sections, and different types of engineering drawings, such as those for mechanical engineering, architecture, civil engineering, and shipbuilding. It is applicable to both manual and computer-based drawings, but it is not applicable to three-dimensional CAD models.[1]
The ISO 128 replaced the previous DIN 6 standard for drawings, projections and views, which was first published in 1922 and updated in 1950 and 1968. ISO 128 itself was first published in 1982, contained 15 pages and "specified the general principles of presentation to be applied to technical drawings following the orthographic projection methods".[2]
Several parts of this standard have been updated individually. The last parts and the standard as a whole were withdrawn by the ISO in 2001.
A thirteenth part was added in 2013.
Composition of ISO 128
The 7 parts of the ISO 128 standard are:
ISO 128-1:2020 Technical product documentation (TPD) — General principles of representation — Part 1: Introduction and fundamental requirements
ISO 128-2:2020 Technical product documentation (TPD) — General principles of representation — Part 2: Basic conventions for lines
ISO 128-3:2022 Technical product documentation (TPD) — General principles of representation — Part 3: Views, sections and cuts
ISO 128-15:2013 Technical product documentation (TPD) — General principles of presentation — Part 15: Presentation of shipbuilding drawings
ISO/TS 128-71:2010 Technical product documentation (TPD) — General principles of presentation — Part 71: Simplified representation for mechanical engineering drawings
ISO 128-100:2020 Technical product documentation — General principles of representation — Part 100: Index
Withdrawn parts
Replaced by ISO 128-2:2020
ISO 128-20:1996 Technical drawings — General principles of presentation — Part 20: Basic conventions for lines
ISO 128-21:1997 Technical drawings — General principles of presentation — Part 21: Preparation of lines by CAD systems
ISO 128-22:1999 Technical drawings — General principles of presentation — Part 22: Basic conventions and applications for leader lines and reference lines
ISO 128-23:1999 Technical drawings — General principles of presentation — Part 23: Lines on construction drawings
ISO 128-25:1999 Technical drawings — General principles of presentation — Part 25: Lines on shipbuilding drawings
Replaced by ISO 128-3:2022
ISO 128-30:2001 Technical drawings — General principles of presentation — Part 30: Basic conventions for views
ISO 128-33:2018 Technical product documentation (TPD) — General principles of presentation — Part 33: Representation of views, sections and cuts in construction drawings
ISO 128-34:2001 Technical drawings — General principles of presentation — Part 34: Views on mechanical engineering drawings
ISO 128-40:2001 Technical drawings — General principles of presentation — Part 40: Basic conventions for cuts and sections
ISO 128-43:2015 Technical product documentation (TPD) — General principles of presentation — Part 43: Projection methods in building drawings
ISO 128-44:2001 Technical drawings — General principles of presentation — Part 44: Sections on mechanical engineering drawings
ISO 128-50:2001 Technical drawings — General principles of presentation — Part 50: Basic conventions for representing areas on cuts and sections
Other ISO standards related to technical drawing
ISO 129 Technical product documentation (TPD) — Presentation of dimensions and tolerances
ISO 129-1:2018 Technical product documentation (TPD) — Presentation of dimensions and tolerances — Part 1: General principles
ISO 129-4:2013 Technical product documentation (TPD) — Indication of dimensions and tolerances — Part 4: Dimensioning of shipbuilding drawings
ISO 129-5:2018 Technical product documentation — Indication of dimensions and tolerances — Part 5: Dimensioning of structural metal work