Need basic help 2

[frezaifua]

Hello everybody!

My name is Roman. I'm rookie in US engineering. I studied mechanical engineering in my country (Ukraine). I see differences in standarts of drafting & other branches. So I need basic help. Can someone give me advice what literature should I choose to get required general knowledge in rules & standarts of US engineering, draftings etc.

Thank you!

 

[pmarc]

For drafting I would recommend Y14 group of standards. Maybe not exactly all of them but those which seems to be interesting for you. You will quickly notice the most significant differences in drawing formats, units, projection angle etc.

If you are interested in dimensioning and tolerancing focus especially on Y14.5.

 

[MintJulep]

The standards themselves are certainly definitive. They are expensive and not particularly readable though.

You may be better served by a good drafting/drawing book.

I have earlier versions of:

http://www.amazon.com/Engineering-Drawing-Design-Cecil-Jensen/dp/0028017951

and

http://www.amazon.com/Blueprint-Rea...=sr_1_1?s=books&ie=UTF8&qid=1326910335&sr=1-1

and recommend both.

 

[KENAT]

Presumably you're English as a second language so the standards may be challenging but I'd be tempted to say that for the drawings aspect start with the standards and then go from there.

They are expensive, perhaps a library or something has some you can look at.

If you're doing serious drafting a copy of ASME Y14.5M-**** (where **** is the edition date) may be a worthwhile investment. As to choosing which version, a lot depends on what version your employer/potential employers adhere to.

Also, be aware, not everyone in every drafting office in the US ... fully complies with the standards.

Posting guidelines faq731-376

http://eng-tips.com/market.cfm?

(probably not aimed specifically at you)
What is Engineering anyway: faq1088-1484​

 

[ewh]

everyone in every drafting office in the US... fully complies with the standards

"Good to know you got shoes to wear when you find the floor." - [small]Robert Hunter[/small]

 

[powerhound]

Wow, talk about selective quoting...haha

What's wrong with you Ken? You're setting the guy up for failure

Powerhound, GDTP T-0419
Engineering Technician
Inventor 2010
Mastercam X5
Smartcam 11.1
SSG, U.S. Army
Taji, Iraq OIF II

 

[KENAT]

Hey, ewh was the one taking it out of context;-).

I could have said 'most', or 'a lot of' folks don't comply but didn't want to discourage the OP from learning how to do it properly.

Posting guidelines faq731-376

http://eng-tips.com/market.cfm?

(probably not aimed specifically at you)
What is Engineering anyway: faq1088-1484​

 

[fcsuper]

What's funny to me is how many people think something is in the standards (any of them) but really aren't in print anywhere (let alone the standards). Nowadays, when I'm aware that a particular "requirement" isn't in a standard, I politely ask the person let me know where is the requirement in the standards they reference.

Matt Lorono, CSWP
Product Definition Specialist, DS SolidWorks Corp
Personal sites:
Lorono's SolidWorks Resources & SolidWorks Legion

 

[looslib]

The one that got me was drawing view scales. There is no standard, that I have found, that says views should be certain scales. We had it in the company standrad that views whould be 1:1, 1:2, 1:4, 1:12, etc, for inch drawings. For metric, 1:1, 1:2, 1:5, 1:10, etc.

If anyone knows of a standard that specifies drawing view scales, I'd love to see it. I get tired of seeing 31:256 as a view scale!


"Wildfires are dangerous, hard to control, and economically catastrophic."

Ben Loosli

 

[dgallup]

There is an iso standard that says drawing scales should be multiples of 2, 5 & 10. I'll have to get back to my office to look it up. I take a liberal view of that and creatively come up with 4 (2 x 2), 8 (2 x 2 x 2), 25 (5 x 5), etc. To me that was established in the pen & pencil days when people tried to scale things off the drawing despite the notes telling them not to. I do avoid really irregular scales like 3 & 7 and definitely no 31:256!

----------------------------------------

The Help for this program was created in Windows Help format, which depends on a feature that isn't included in this version of Windows.

 

[frezaifua]

The standards themselves are certainly definitive. They are expensive and not particularly readable though.

You may be better served by a good drafting/drawing book.

I have earlier versions of:

http://www.amazon.com/Engineering-Drawing-Design-Cecil-Jensen/dp/0028017951

and

http://www.amazon.com/Blueprint-Rea...s=books&ie=UTF8&qid=1326910335&sr=1-1

and recommend both.

Thank u. I will start from this 2 books. To start from standards will be more harder & more expensive for me. It's wierd for me to see that standards are so expensive. When I was at home I could get all required standards for... free Now I see VERY BIG difference between this and that world.

Thanks all of you guys, if someone will have some tips for me, please post it

 

[fsincox]

Ken,
You said a mouthfull there. Shall we disallusion the guy before he starts.
frezaifua,
Were you exposed to the ISO standards in your past? Were they followed as hit and miss as the standards are here?
Frank

 

[fsincox]

Please get them and send them to me We can work out a trade maybe?
Frank

 

[DRWeig]

Roman,

Perhaps could you tell us if you are considering drafting for machinery (manufactured parts, machines, tool and die, etc...), or construction mechanical engineering (heating, air conditioning, plumbing, etc...)?

Drafting standards (or lack of them) are quite different for the two disciplines.

Good on ya,

Goober Dave

Haven't see the forum policies? Do so now: Forum Policies

 

[ak762]

frezaifua, you had opportunity to get its because hard copies was company properties or even I would say authority properties. Its had been distributed among machinery companies in whole industry.
With wind of change now national standards are not free in your home country even.

 

[frezaifua]

Were you exposed to the ISO standards in your past? Were they followed as hit and miss as the standards are here?
Frank

I have never used ISO standards before. I used Soviet Union standards as GOST, or my country standards as DSTU. All of u probably never heard about this type of standards. That's very old and useless standards for modern industry. That's why they are free. I just can download it for free from web.

Perhaps could you tell us if you are considering drafting for machinery (manufactured parts, machines, tool and die, etc...), or construction mechanical engineering (heating, air conditioning, plumbing, etc...)?

Drafting standards (or lack of them) are quite different for the two disciplines.

I'm interesting in machinery, that's my goal, construction mechanical engineering can be like additional information for me.


I have another question. What program do you use to make a drafts? AutoCAD or something else? Cause I was using ASCON - Compass (russian analog of AutoCAD) while studing in college.
Also I want to ask about machines with CNC control. What kind of programming language are in use now? It's depend of manufacturer? Where can I find some instructions (commands) how to program a treatment on machines?

 

[DRWeig]

Hi again Roman,

I have only been involved with construction drafting. You need advice from the other people in this forum. Their standards are much more complex and strict. In construction, we don't follow GD&T and Tolerance Analysis rules at all. I read this forum because I find it interesting. I have never posted here before.

The reason I posted this time is that I am acquainted with a fellow named Roman from Ukraine who is the owner of an HVAC contracting business. I will give him a call to see if it is a coincidence... I can provide information on standards for symbols and techniques for drafting in HVAC, Plumbing, and Electrical areas. Perhaps some examples as well.

Best of luck to you!

Good on ya,

Goober Dave

Haven't see the forum policies? Do so now: Forum Policies

 

[frezaifua]

Definetly I'm not the owner of business. it is a coincidence.
May be in future I will ask about construction drafting. Thanks for help. Good luck to you too!

(UA)
eternal student in industrial environment

The best way to predict the future to create it.

 

[ak762]

I have never used ISO standards before. I used Soviet Union standards as GOST, or my country standards as DSTU. All of u probably never heard about this type of standards. That's very old and useless standards for modern industry

Do not tell nonsense. Someone from this community may lead into error with your incorrect information. Unify system of design documentation with GOST standards is valid. Some of them updated with new revision only. This background with small adaptation to American standards allow to work me as checker abroad.

 

[tk369]

In regards to "SCALE", the Y14.100-2004 standard says:
"4.23 Scale
Scale expresses the ratio of the object size as drawn
to its full size. Drawings shall be drawn to a scale that
depicts all details of the item clearly and accurately,
except as noted in para. 4.23.3.
4.23.1 Selection of Scale.
Drawings should show an
object or assembly to full scale. When full scale is not
practicable, drawings may be prepared to reduced or
enlarged scale. It is desirable, whenever practicable, that
detail drawings be prepared to the same scale as pertinent
assembly drawings.
4.23.2 Indication of Scale.
The scale, or scales, to
which drawings are prepared shall be indicated on the
drawing. The scale to which the majority of views and
sections are drawn shall be entered after “SCALE” in
the space provided on the drawing. For multisheet
drawings, the predominant scale used for each sheet
shall be entered after “SCALE” in the space provided
on that sheet. The options for depicting scale, fraction,
ratio, or decimal are indicated as examples below. The
scale of each view or section drawn to other than the
predominate scale shall be entered directly below the
title of the view or section."

ted kralovic

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