Bs8888 Drawing Standards Pdf

BS 8888 defines the requirements for the technical specification of products and their component parts. The standard explains the way in which engineering drawings outline and present these specifications, and covers all of the symbology and information that engineers and designers need to include on their drawings, whether they are produced in 2D or in 3D, created using CAD systems and 3D modelling.

Acting as a navigational roadmap to the ISO standards, BS 8888 provides information engineers need on a regular basis, including the nuts and bolts of engineering specification. The revised standard aims to help UK industry move over more fully to the ISO system of geometrical product specification, and is based on the ISO GPS system of product specification standards. BS 8888 brings together all international standards needed to prepare technical product specifications. The standard aims to assist UK industry to use the 200 or more international standards on documentation, specification, and verification.

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The updated standard is expected to be particularly useful to mechanical engineers, engineering designers, and design engineers in the UK, working in engineering and manufacturing companies, particularly in defence, aerospace, automotive, rail, nuclear and other general manufacturing sectors. Essentially, any engineering drawing should comply with the requirements of BS 8888. Independent design consultancies or design agencies are also set to benefit from BS 8888.

1) Line types - centreline, long dash - dot is now the preferred line format. Fold lines - long dash - double dot. I'm trying to work on a pen table to fix this. The definition is clearest in ISO 128-21 guidance for CAD drawings.

I try to avoid drawings, they are no longer so important with the move to drect manufacture from the CAD model. I really wish exam boards would scale down (excuse the pun) drawing content and introduce more simulation and analysis which are the really useful tools for improving designs.

The guru on drawings was John Forth. He did all the initial development work setting up BS8888 standards and drawing templates. Adam Haas took that and setup configurations for standards in different parts of the world and Chris Carr continues this work so Chris is the one who will make the changes to the new configs.

I hear what your saying Tim and as I'm sure you know only too well, exam boards are like a supertanker that's out of radio contact. If the message gets through at all they take an awful long time to swing round. John's work was good but for many years we've used the templates I developed along with our own in house configuration utility & creo standards. We also shared these on request with other schools we had trained or had contact with. This started before WF/Creo even had a schools configuration utility. Our exam board is now getting picky again about legacy centrelines, leaders and other non conforming drawing artefacts.

Most companies I visit/interact with use drawings to a BS/ISO convention and it is expected that technicians/enginers/graduate engineers can read/understand/modify/update them with the same conventions.

PC screens tend to have approximately 1000x1000pixels only in the drawing area, most printers are at least 300+ dpi and therefore even a A4 drawing tends to show up interferences, gaps etc. much more easily than the screen (even with global clearances ...) [NB Retina displays approach 300 dpi and good quality 1200dpi lasers are phenominal!]

Watching students put together assemblies and modify parts it is amazing to see how much quicker they approach a final solution when they have an updatable orthographic drawing (part and/or assembly) beside them to sketch on, estimate distances, place components on, discuss with peers....

I tend to suggest to students to always sketch preliminary designs on graphpaper, which helps with their drawing skills, scaling etc. as well as reducing the time entering sketches/dimensions/fits etc in CAD. [Printing simple orthographic drawings on feint graph paper can also help understanding scales, fits etc, without needing to generate fully dimensioned drawings, during the development/embodiment stages]

While direct manufacture is certainly on the way the discipline of generating a well dimensioned drawing emphasises to the user the physical size of a component, potential load paths and manufacturability. The number of components I get to 3D print which have features under/over designed, non-manufacturable, is getting worse. The pseudo 3D representation of a component on screen is very seductive but potentially wasteful of time and energy. It is very interesting to get a students reaction after playing back a sessions Trail File to show them how they have interacted with a model. It often results in a significant change in system usage!

James Collin has produced some fantastic Creo standards files that everyone in Edinburgh is using. It would be great if they could be updated in light of the SQA's recent approach to drawing standards.

You need to set anything you want to be standard across any drawing you start should be set up in your dwt file. This can be selected from the drop down box when you "open drawing". Change what you need and save it then all drawings started with that template will have their basic settings the same.

Having said all that I don't think AutoCAD has a hook to BS8888. BS8888 is the standard that all UK draughtsmen should work to. It is also closly aligned with the European standard (number escapes me) so all European drawings should at least be similar. It is the standard for DRAWING - irrespective of how the drawing was produced. It is sometime since I read it but it did contain a section specifically for CAD but most of it is about size of text, dimensioning, weight of printed lines, shape of graphical symbols etc. Some of this can be set up in advance. It also explains projection over which AutoCAD has no control, that is down to the draughtsman.

"The kits can be procured from British Standards Publishing, see link below, or they are available for reference in the UK at Central Libraries. British Standards also sell a CD which includes all of BS 8888 and all of the associated standards.."

These pages include various standards. To confirm the status of any standard, identify the replacement standard if it is obsolete and/or purchase the standard please use BSI Shop. It is also possible to become a BSI member and obtain copies of the Standards at much reduced prices.

BS 308 was formerly the standard for engineering drawing since 1927. Over a period of 72 years it was expanded and edited until its withdrawal in 2000. The BSI Group, who produced the standard, played an important role in the development of the international standard on technical specification in conjunction with the ISO. In 2000, the BS 308 was replaced by the updated BS 8888.

This updated version of the standard has been restructured to be more aligned to the workflow of designers and engineers to assist throughout the design process. The standard now references 3D geometry, not only as drawings but also allowing a 3D surface to be used as a datum feature. [2]

I came here to ask if there was a way to have different line types for things such as breakout sections in order to match the BS8888 standard, I've had a look and it seems there are only options to change the default line types. This would be for doing breakout views that are not on-axis. If this isn't a feature, would it be possible to add it, because, without it, it is impossible to correctly follow the BS8888 standard when doing this type of breakout view? I have linked a page from the engineering drawing manual for reference. Options for other line types would also be useful if not currently included (some such as G in the diagram I haven't yet had to use).

Meanwhile, ISO was developing international standards for engineering drawing and tolerancing. In a number of cases, ISO standards were developed to cover particular topics before any corresponding coverage was developed for BS 308. Rather than attempting to duplicate the ISO standard material in BS 308, these ISO were simply adopted as British Standards, and referenced by BS 308. By 2000, a complete set of British Standards for engineering drawing included around 30 ISO standards in addition to BS 308 itself.

As a growing number of ISO standards were now becoming BS EN ISO standards, the risk of a conflict with BS 308 was also growing. Even if a conflict could be avoided, and BS 308 managed to stay fully harmonised with BS EN ISO standards, the outcome would simply be to have BS 308 and BS EN ISO standards duplicating each other. Eventually, the system of ISO standards became sufficiently comprehensive to cover every technical topic which was covered by BS 308. At best, BS 308 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.

The withdrawal of BS 308 took place in 2000. 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 8888.

BS 8888 got off to a very rocky start, as much of industry expected it to be a kind of new, improved BS 308, and instead, found that it consisted of little more than a long list of ISO standards, and gave virtually no guidance on how to produce a specification. Where BS 308 had provided guidance, explanations and examples on various topics, BS 8888 simply listed the ISO standards which now dealt with that topic. It was in effect just an expensive shopping list.

In recent years, BSI have changed their approach to BS 8888. Instead of just listing the ISO standards which deal with a subject, BS 8888, in many areas, now reproduces much of the content of those ISO standards. 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. The objective of the team responsible for BS 8888 is that 90% of the material that most engineers, designers and technicians require regular access to can be found directly within BS 8888. 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 2013 revision. Two more revisions have been published sine then, each taking this approach furthere. The latest version is BS 8888:2020. In some ways, BS 8888 has returned to its BS 308 roots, and is once again a document which provides rules, definitions and guidance for those involved in creating or interpreting technical specifications. be457b7860