BS EN ISO 128-1:2020 pdf free.Technical product documentation (TPD) – General principles of representation Introduction and fundamental requirements.
BS EN ISO 128-1 This document gives general rules for the execution of technical drawings (2D and 3D], as well as presenting the structure of the other parts of the ISO 128 series. This document is applicable to technical drawing in the fields of mechanical engineering, construction, architecture and shipbuilding.It is applicable to both manual and computer-based technical drawings.For the purpose of this document the term “technical drawing”shall be interpreted in the broadest possible sense, encompassing the total package of documentation specifying the product (workpiece, subassembly, assembly). 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.The content shall be definitive, for example, for the manufacture of a part and the verification of its specifications. Only indicated requirements on the technical drawing or in the related documentation are manufactured or verified. b) To scale. The outlines and details of a representation should be proportional to the represented part. (For scales, see ISO 5455.) Nevertheless, values for the dimensions of an object shall not be determined or scaled directly from the technical drawing. c Appropriate for duplication and copying. To provide a high-quality product when plotting, copying or microcopying and reproducing; these shall be done in accordance with ISO 6428. d) Language independent. It is preferable that technical drawings be language independent. Words
should be used only within the title block or where it is impracticable to present information graphically.  e) In accordance with standards. The ISO 128 series and its normative references shall be respected. Assembly technical drawings shall have an associated item list in accordance with ISO 7573, which may be included on the technical drawing itself or presented as a separate document. The release procedures for a technical drawing and any changes on released technical drawings shall be clearly documented.BS EN ISO 128-1 pdf downlaod.