BS EN ISO 8560:2019 pdf – Technical drawings – Construction drawings – Representation of modular sizes, lines and grids

BS EN ISO 8560:2019 pdf – Technical drawings – Construction drawings – Representation of modular sizes, lines and grids.
1 Scope This document lays down rules for the representation of modular sizes, lines and grids on construction drawings. The basic module M is 100 mm (see ISO 1006). Generally, modular sizes are for use on design drawings, but can also be added to production drawings for manufacturing, orientation and location. 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 128-1, Technical drawings — General principles of presentation — Part 1: Introduction and index ISO 129-1, Technical product documentation (TPD) — Presentation of dimensions and tolerances — Part 1: General principles 3? Terms? and? definitions No terms and definitions are listed in this document. ISO and IEC maintain terminological databases for use in standardization at the following addresses: — ISO Online browsing platform: available at https://www.iso.org/obp — IEC Electropedia: available at http://www.electropedia.org/ 4 General Drawings with modular sizes shall be executed in accordance with ISO 128-1 and ISO 129-1. If necessary, the drawings should have a note indicating that modular sizes are being used. 5 Designations of modular sizes Drawings with sizes indicated in modules (instead of in millimetres or metres) should have a clear note explaining that this is the case.
6 Representation of modular lines and sizes 6.1 General Modular lines and sizes shall be represented in accordance with the following figures. 6.2 Modular and multimodular lines Modular and multimodular lines shall be drawn using a continuous line (see Figure 1). The lowest level shall be drawn using a continuous thin line. Figure 1 — Modular and multimodular lines 6.3 Modular line in an axial position Where necessary for reasons of clarity, a modular line in an axial position may be indicated by a chain line (see Figure 2). Figure 2 — Modular line in an axial position 6.4? Circle? for? identification? of? modular? line Where necessary for identification purposes, multimodular grid lines shall be terminated with a circle drawn with a thin line (see Figure 3). Figure? 3? —? Circle? for? identification? of? modular? line 6.5 Designation of modular line The line may be designated by a reference inside the circle (see Figure 4).