×
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

ASME Y14.5 1994

ASME Y14.5 1994

ASME Y14.5 1994

(OP)
There is a slight discussion going on in another Forum, so I thought I would come here to clairify it.

Say you have a multiple feature (5X) that needs to be  dimensioned as a Basic Dimension (enclosed in a box), is it the standard to place the 5X inside or outside the Basic Dimmension box?

"Happy the Hare at morning for she is ignorant to the Hunter's waking thoughts."

RE: ASME Y14.5 1994

Inside - according to my "Drawing Requirements Manual - 5th Edition" based on ANSI Y14.5-1982.

Steve Smith
Product Engineer
Staco Energy Products Co.
www.stacoenergy.com

RE: ASME Y14.5 1994

(OP)
I have the 9th edition 1995 and it says the same thing, I was just checking to see if it was different for 1994.

Thanks for the quick response.

"Happy the Hare at morning for she is ignorant to the Hunter's waking thoughts."

RE: ASME Y14.5 1994

Does anyone know what happened to the True Positional Tolerancing matrix that used to be in Y14.5??

RE: ASME Y14.5 1994

Actually, either inside or outside is acceptable.  ASME Y14.5M-1994, paragraph 1.9.5 states the requirement as follows:

"1.9.5 Repetitive Features or Dimensions.  Repetitive features or dimensions may be specified by the use of an X in conjunction with a numeral to indicate the “number of places” required.  See Figs. 1-52 through 1-56.  Where used with a basic dimension, the X may be placed either inside or outside the basic dimension frame.  See Figs. 4-26 and 5-14."

Either way is acceptable, but I don't think both methods should be mixed on the same drawing for consistancy.

GDT_GUY

RE: ASME Y14.5 1994

Hi All,

My question pertains to the revisions made on drawings.

I understand that the revision letter must be updated every time a change is made on a drawing.  My first question is if the drawing contains multiple sheets does every sheet need to have its revision letter changed or does it change only on the sheet that the drawing change was made on??

Second question is about the revision block that has the area where you describe what changes have been made on the drawing.  Does every single change you made on a the revised drawing have to be described inside this revision block or is the revision letter change made on the drawing enough to signal the change??

Your response is greatly appreciated.

RE: ASME Y14.5 1994

(OP)
First off, your drawing should only reflect 1 part, so regardless of how many pages the drawing has, if the part has changed, then each sheet should reflect the new revision level.  My personal opinion anyway, I have seen only one page rev'd, and I have seen all pages rev'd, prefering all pages to be rev'd.

As for the revision block in the corner of the drawing, each company is going to do something different.  Some companies require every change to be displayed, many times resulting in the first page of a drawing to be nothing but descriptions of revision changes. Other companies may only truncate the changes, and put the most drastic change in the block.

Some companies (like mine) don't put any information in the revision block, and reply on a well detailed Document Change Notices (DCN) to document the changes.  On the drawing, changed features or dimensions are flaged with the new revision level inside parenthesis.

According to the 9th edition of the DMR by Global Engineering Documents, section 23.5 Identifying Revisions on Drawings, you can do the following:
A) Describe the change in the Revison History block, with zone locators for clarity.
B) Reference the ADCN/DCN of the change in the Revision History Block.
C) Place a revision symbol in the field of the drawing
D) Any combination of A, B< or C above for ease of tracking.

The bottom line is to document any changes so there is no room for errors or different interpretations.

"The attempt and not the deed confounds us."

RE: ASME Y14.5 1994

RevUpdate,

What industry do you work in?  And do you have a contract with your customer as to the drawing requirements?

MadMango stated that you should only have one part per drawing, which isn't necessarily true.  When following the DOD-D-1000 and/or DOD-STD-100, you can have a mono-detial drawing, multi-detail drawing, inseperable assembly drawing,  or several others.  The drawing requirements for rev history also depends on it being a level 1, 2, or 3 drawing.

The DMR by Global Engineering is a great document to pick up if you are not required to follow any specific standard.  It basically combines all the requirements of several ANSI/ASME standards as well as their military counterparts and puts them in one easy to use, giant sized binder.  The problem is that the DMR doesn't reference each section to the specific ANSI standard and the DMR is not a recognized industrial standard.  So, if someone asks what standard you follow, you can't say the DMR from Global Engineering, you have to research the correct ANSI standard that is referenced in the DMR.

If you want a free copy of MIL-STD-100, go to
http://astimage.daps.dla.mil/online/new/

Below is a link to an old revision because it hasn't been stripped down yet.  Revision G of MIL-STD-100 removes the parts that duplicate industry standards.  Chapter 600 refers to revision history.  FYI: MIL-STD-100 has been canceled and superseded by the appropriate ASME standards.
http://131.82.253.19/docimages/0000/42/25/72837.PD6
The page is a little slow to load.  Be patient.

RE: ASME Y14.5 1994

(OP)
Swertel, thanks for being more specific and providing a true standard as refernce.  Where I work, people think standards are hurdles not stepping stones.  For this reason I always state when I reference from the DMR since it isn't a true standard.

"The attempt and not the deed confounds us."

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

eBook - Integrating the Engineering Ecosystem
Aras Innovator provides multiple options for integrating data between systems, depending on the scenario. Utilizing the right approach to meet specific business requirements is vital. These needs range from authoring tools, federating data from various and dissimilar databases, and triggering processes and workflows. Download Now
Research Report - Simulation-Driven Design for SOLIDWORKS Users
In this engineering.com research report, we discuss the rising role of simulation and the paradigm shift commonly called the democratization of simulation. In particular, we focus on how SOLIDWORKS users can take advantage of simulation-driven design through two analysis tools: SOLIDWORKS Simulation and 3DEXPERIENCE WORKS. Download Now
White Paper - Industry 4.0 and the Future of Engineering Education
With industries becoming more automated, more tech-driven and more complex, engineers need to keep their skills and knowledge up to date in order to stay on top of this wave—and to be prepared for the Industry 4.0 future. The University of Cincinnati offers two online Master of Engineering degree programs designed specifically for practicing engineers. Download Now
eBook - The Design Gridlock Manifesto
In this eBook, you’ll learn 6 ways old CAD technology slows your company down and hear how design teams have put those problems to rest. “The Design Gridlock Manifesto” shares first-hand modern CAD experiences from 15 companies around the world. 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