EN ISO 5456-2:1999 PDF

Name: EN ISO 5456-2:1999 — Technical drawings - Projection methods - Part 2: Orthographic representations (ISO 5456-2:1996)
SKU: EN ISO 5456-2:1999
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Technical drawings - Projection methods - Part 2: Orthographic representations (ISO 5456-2:1996)

Название (английский):

EN ISO 5456-2:1999

Technical drawings - Projection methods - Part 2: Orthographic representations (ISO 5456-2:1996)

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 9
Дата публикации:: 14 июля 1999 г.
Издание:: CEN EN 5456 edition 1 version 1
ICS:: 01.100.01

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Описание (английский):

La présente partie de l'ISO 5456 prescrit des règles de base pour l'application de la représentation orthographique pour tous les types de dessins techniques dans tous les domaines techniques, conformément aux règles générales prescrites dans l'ISO 128, l'ISO 129, l'ISO 3098-1, l'ISO 3461-2 et l'ISO 5456-1.

Abstract

Похожие стандарты

Стандарты, упомянутые в описании

Overview

EN ISO 5456-2:1999 (ISO 5456-2:1996) defines how to produce orthographic representations in technical drawings. It is part of the ISO 5456 series on projection methods and establishes basic rules for arranging and identifying parallel orthogonal projections (flat 2D views) so that objects are represented unambiguously across engineering, architectural and construction documentation.

Key topics and requirements

Projection methods: Describes the two principal orthographic projection conventions - first angle projection and third angle projection - and shows how each arranges the standard views relative to the principal (front) view.

Designation of views: Defines the six view directions (A to F) and how to label views and indicate directions of observation using upper- and lower-case letters.

Reference arrows layout: Permits flexible placement of views using reference arrows when strict first- or third-angle layout is impractical.

Mirrored orthographic representation: Covers mirrored (face-up) reproductions of objects - a method noted as especially useful in construction drawings.

Graphical symbols: Annex A (normative) specifies proportions, dimensions and line widths for the identifying graphical symbols used to indicate projection method and mirrored views; it also references ISO 3461-2 for harmonization with other drawing inscriptions.

General principles: Emphasizes selecting the most informative principal view, minimizing redundant views, and choosing sufficient views, cuts or sections to fully describe an object without ambiguity.

Practical applications

Producing standardized 2D engineering drawings and manufacturing documentation that are internationally interpretable.

Setting CAD drawing templates and title-block symbols to indicate projection convention (first vs third angle).

Creating construction and architectural drawings where mirrored orthographic representation may simplify presentation.

Training and quality-control for drafting, technical illustration and documentation to ensure consistent view arrangement and labeling.

Related standards

ISO 5456-1: Projection methods - Synopsis and general rules

ISO 5456-3: Axonometric representations

ISO 128, ISO 129: General drawing presentation and dimensioning rules

ISO 3098-1, ISO 3461-2, ISO 10209: Lettering, graphical symbols and vocabulary for technical drawings

Keywords: EN ISO 5456-2, ISO 5456-2, orthographic representation, first angle projection, third angle projection, projection methods, technical drawings, graphical symbols, reference arrows.

EN ISO 5456-2:1999 PDF

Abstract

Похожие стандарты

Overview

Key topics and requirements

Practical applications

Who should use this standard

Related standards

Технические детали

ISO 5456-2:1996

Technical drawings — Projection methods — Part 2: Orthographic representations

SIST EN ISO 5456-2:2002

Technical drawings - Projection methods - Part 2: Orthographic representations (ISO 5456-2:1996)

ISO 3461-2:1987

General principles for the creation of graphical symbols — Part 2: Graphical symbols for use in technical pro…

SIST EN ISO 5456-1:2002

Technical drawings - Projection methods - Part 1: Synopsis (ISO 5456-1:1996)

SIST EN ISO 5456-3:2002

Technical drawings - Projection methods - Part 3: Axonometric representations (ISO 5456-3:1996)

BS ISO 128-44:2001

Technical drawings. General principles of presentation. Sections on mechanical engineering drawings.

BS ISO 12991:2012

Liquefied natural gas (LNG). Tanks for on-board storage as a fuel for automotive vehicles.

SIST EN ISO 3098-1:2015

Technical product documentation - Lettering - Part 1: General requirements (ISO 3098-1:2015)