BS is the British standard developed by the BSI Group for technical product documentation, geometric product specification, geometric tolerance specification and engineering drawings. Figure 33 – Simplification of drawing indication when there is only one This British Standard supersedes BS , which is withdrawn. Technical Drawing standards create a 2D Graphical Language. I’ve based the information on these posts on BS , the British standard for ‘Technical.
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This was BSwhich in one edition or another came to be found on the book shelves of almost every design, manufacturing and inspection department in the country.
BS was also widely used overseas, throughout the British Commonwealth. BS was developed, revised and expanded over the years.
Changes to the standard came about as it was extended to cover new areas, and to keep abreast of technological development and changes in working practice. In standzrds, it was split into the three parts standagds many engineers and designers are familiar with.
Meanwhile, ISO was developing international standards for ns8888 drawing and tolerancing. In a number of cases, ISO standards were developed to cover particular topics before any corresponding coverage was developed for BS Eventually, the system of ISO standards became sufficiently comprehensive to cover every technical topic which was covered by BS At best, BS would now simply duplicate the ISO standards, and at worst, it would contradict them in some area; the justification for maintaining an independent British Standard for mechanical specification had now disappeared.
BS Technical product documentation and specification
The withdrawal of BS took place in Designers and engineers now had to make use of the extensive catalogue of ISO standards that cover different aspects of Technical Product Specification. In order to make this transition as painless as possible, BSI produced a new document as an index to the ISO system, to help end-users find their way around it. This document is the standard known as BS It was in effect just an expensive shopping list.
The aim of the standard is no longer simply to index the ISO system, but also to make directly available much of the key material of the ISO standards directly, all in one place.
In this way, the standard seeks to make the ISO system much more accessible and far more useable. The first revision to take a major step in this direction was the revision.
Work has recently finished on the next revision, which is now drawibg more comprehensive, and will be published in December There are a number of changes and developments to working practices, many of which would have been introduced through a new version of BS if it had not been withdrawn.
Principle changes can be summarized as follows: The drwaing of standardisation became widely recognised during the industrial revolution.
In the first quarter of the 20th century, national standards institutions started to appear to manage and advance this process in most of the major industrialized nations. As industries developed to standardss global markets, and supplier bases expanded across national boundaries, the value of international standards, or at least harmonisation between national standards, became apparent.
To address this need, a number of the major national standards bodies formed a federation known as the International Organization for Standardization.
As the initials of this organisation could vary when the name was translated into different languages, the initials Bs88888 were adopted as a universal acronym for its name.
The federation has grown considerably since those early days, and now over nations are represented in its membership. The standards which govern mechanical engineering specification have become rationalised over recent decades, and there are now two systems of standards which are used almost universally.
UK’s national standard for engineering drawings revised
This website utilises cookies, To use the website as intended please BS – What does it mean in practice? The standards cover more than just engineering drawing, they cover all aspects of technical product specification, including, for instance, the use of 3D CAD models to define component geometry.
Requirements for drawing borders and title blocks have been formalised and changed in some areas The comma is to be used as a decimal marker instead of the full stop. Size tolerances should be interpreted in accordance with ISO i. The use of dimensions, bs888 tolerances, datums, geometrical tolerances, edge and surface specifications have been formalised and systematised under the heading of Geometrical Product Specification GPS.
This approach is the driving philosophy behind BS and the current generation of ISO standards, and industry will potentially benefit enormously from its adoption.