BS EN ISO 128‑3:2020 pdf download.Technical product documentation – General principles of representation.
3? Terms? and? definitions
For the purposes of this document, the terms and definitions given in ISO 10209 and the following apply.
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3.1 cut sectional view section (3.2) showing, in addition, outlines beyond the cutting plane Note 1 to entry: While “cut” is generally used in the construction field, “section” is generally used in the mechanical engineering field, regardless of the definitions in 3.1 or 3.2. [SOURCE: ISO 10209:2012, 3.11, modified — Note 1 to entry added.]
3.2 section representation showing only the outlines of an object lying in one or more cutting planes Note 1 to entry: While “cut” is generally used in the construction field, “section” is generally used in the mechanical engineering field, regardless of the definitions in 3.1 or 3.2. [SOURCE: ISO 10209:2012, 3.61, modified — Note 1 to entry added.]
3.3 technical drawing drawing showing a technical installation, process or product with a view to clarifying its structure and enabling its construction Note 1 to entry: For the purpose of this document, the term “technical drawing” is interpreted in the broadest possible sense, encompassing the total package of documentation specifying the product (work piece, subassembly, assembly). [SOURCE: ISO 5127:2017, 3.4.7.54, modified — Note 1 to entry added.]
4 Basic conventions for views 4.1 General information on views The most informative view of an object shall be used as the principle view, taking into consideration, for example, its functioning position, position of manufacturing or mounting. Each view, with the exception of the front or principal figure (view, plan, principal figure), shall be given clear identification with a capital letter, repeated near the reference arrow needed to indicate the direction of viewing for the relevant view. Whatever the direction of viewing, the capital letter shall always be positioned in normal relation to the direction of reading and be indicated either above or on the right side of the reference arrow.
7 Basic conventions for representing areas on cuts and sections
7.1 General information on cuts and sections
There are six methods for the representation of areas on cuts and sections. These consist of indication:
— by hatching (see 7.2);
— by shading or toning (see 7.3);
— by extra-wide continuous outlines (see 7.4);
— of thin sections (see 7.5);
— of thin adjacent sections (see 7.6);
— of special materials (see 7.7).
Allowance shall be made for the means of reproduction used, in accordance with ISO 6428.
7.2 Hatching
Hatching shall be done with parallel narrow continuous lines of type 01.1 according to ISO 128-2:—,and at a convenient angle chosen in such a way that the hatching can be distinguished the best from the principal outlines. For example, for a rectangular outline the angle used for the hatching should be 45° (see Figure 17).BS EN ISO 128‑3 pdf download.