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ISO 129-5:2018 pdf free

ISO 129-5:2018 pdf free.Technical product documentation – Indication of dimensions and tol erances
This document specifies the dimensioning of drawings for general use on structural metal work mainly consisting of plates, bars and profile sections.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 129-1, Technical drawings一Indication of dimensions and tolerances Part 1: General principles
ISO 129-4, Technical product documentation (TPD)一Indication of dimensions and tolerances一Part 4: Dimensioning of shipbuilding drawings
ISO 5261:1995, Technical drawings一Simplified representation of bars and profile sections
ISO 657-1, Hot-rolled stee sections一Part 1: Equal-leg angles一Dimensions
ISO 657-2, Hotrolled steel sections一Part 2: Unequal-leg angles一Dimensions
ISO 657-16, Hotrolled steel sections 一Part 16: Sloping flange column sections (metric series) – Dimensions and sectional properties
ISO 657-18, Hotrolled steel sections一Part 18: L sections for shipbuilding (metric series)一 Dimensions, sectional properties and tolerances
ISO 657-21, Hotrolled steel sections一Part 21: T-sections with equal depth and flange width一Dimensions
ISO 10209, Technical product documentation一Vocabulary 一Terms relating to technical drawings, product definition and related documentation
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 10209, ISO 129-1 and the following apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
一ISO Online browsing platform: available at https://www.iso.org/obp
一IEC Electropedia: available at ht://ww.electropedia.org/
4 Basic requirements
Basic requirements of dimensioning are as follows:
a) The indication of dimensions and tolerances shall follow the general principles specified in ISO 129-1.
b) The dimensions of structural metal work shall be simple and clear. The standard plates and profile sections should be represented with code.
c) The datum line of dimensioning should be the centroidal line of component.
To maintain readability of drawings and to simplify drawing, dimension lines can be omitted as shown in Figure 1.
5 Simplified dimensioning of structural metal work
Schematic dimensioning of structural metal work shall conform to the representation method specified by ISO 5261.
The arc length of a circular structure in the frame should be dimensioned on one side of its line. An example is shown in Figure 1.ISO 129-5 pdf download.

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