×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Detail and Section Views

Detail and Section Views

Detail and Section Views

(OP)
Does the standards have anything about section and detail views having common letters?  Example: Section A-A on a drawing that also has Detail A.  I am changing a drawing that has Section Views A-A thru D-D and also has Detail Views A thru G.  My thoughts are that it is probably allowed by the ansi standard but may not be the best practice.  I am interested in knowing your thoughts on this.


Thanks


Mike

RE: Detail and Section Views

I can't find my copy of the standard off hand, but you are looking for standard 14.3.

As far as I know, as you do also, you don't repeat view letters, even though one is section and one is detail.  If you can't get the standard, I would avoid duplicating letters.  Besides, most CAD packages label the views for you, and they don't repeat.  I don't like basing my decisions on the fact that "the computer told me so" but I'm going to have to go with the flow on this one.

RE: Detail and Section Views

ASME Y14.3M-1994, "Multiview and Sectional View Drawings"  does not directly state whether or not it is permissible to identify views and sections using the same letters.  Many people imply that the duplication of letters is permissible since the criteria for identifying removed views and sections is defined in separate paragraphs of the standard (paragraph 1.7.3 for removed views and paragraph 3.2.2 for sectional views)  To make the problem even worse, the standard also defines the term "Detail" in paragraph 2.9 which many people interpret to be a third entity which may also be identified separately.  Hence, on the same drawing I could conceivably have a View A-A, a Section A-A, and a Detail A.

I only know of one company where the practice of duplicating letters is allowed.  Personally, I think that duplicating letters for views, sections and details is a bad idea and only adds confusion for the drawing user. With the use of double-alpha letters, available identifying letters for views, sections and details are plentiful.  There is simply no advantage in duplicating letters in this manner.

GDTGUY

RE: Detail and Section Views

(OP)
Thanks for your fast replies.  I also don't believe it to be a good practice, so I will update the detail names on my drawing.

Thanks again,

Mike

RE: Detail and Section Views

In my opinion there is no confusion by using double letters to designate sections and single letters for details such as AA(section) and A(detail). A logical sequence would be to start a detail with "A". If I were to start with "B" it could be interpreted that an "A" view exists somewhere else on the drawing. In the Notes section an entry could be place to read the last "section" and "view" used on the drawing.

RE: Detail and Section Views

I don't know if anyone is still following this thread, but for future reference my Drawing Requirements Manual for Departments of Defense and Industry by Global Engineering states the following concerning section identification letters:

"Once a letter or combination of letters is established on a released drawing, it is not reused for another section, view, or detail on the same drawing".

I highly recommend this source for anyone who does not have access to the full set of y14 standards.

RE: Detail and Section Views

alex, In the old days, when we used to do these things by hand, every drawing sheet was allowed a maximum of 26 sectional views, "A-A" thru "Z-Z". For Detail views, the maximum allowable was 26, "Detail A" thru "Detail Z". This maximum was only allowed if the section and detail views did not become so ponderous that the drawing sheet become a garbage pile and impossible to read. Fundamentally, you've got to use some judgement on sheet layout and development. There is nothing worse than a drawing that cannot be read due to excess info. If in doubt, make extra sheets of the sectonal views and details, but don't proliferate them to excess, provide only that which is necessary to communicate the design.

saxon

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members! Already a Member? Login


Resources

White Paper - The New World of Thermoplastic Manufacturing
Digital-direct thermoplastic manufacturing offers exceptional quality, opens the door to novel design parameters not possible with injection molding while also bypassing the long lead time and up-front investment in injection molding tooling, offering a better total value proposition. Download Now
White Paper - Strategies to Secure Connected Cars with Firewalls
White-hat hackers have demonstrated gaining remote access to dashboard functions and transmissions of connected vehicles. That makes a firewall a vital component of a multilayered approach to vehicle security as well as overall vehicle safety and reliability. Learn strategies to secure with firewalls. Download Now
White Paper - Model Based Engineering for Wire Harness Manufacturing
As complexity rises, current harness manufacturing methods are struggling to keep pace due to manual data exchanges and the inability to capture tribal knowledge. A model-based wire harness manufacturing engineering flow automates data exchange and captures tribal knowledge through design rules to help harness manufacturers improve harness quality and boost efficiency. Download Now
White Paper - What is Generative Design and Why Do You Need It?
Engineers are being asked to produce more sophisticated designs under a perfect storm of complexity, cost, and change management pressures. Generative design empowers automotive design teams to navigate this storm by employing automation, data re-use and synchronization, and framing design in the context of a full vehicle platform. Download Now

Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close