Drafting Standards - Standard Colors and Line Weights in CAD

#DraftingStandards #AutoCAD
In a CAD system, colors are most commonly used to represent line weights. Selecting different colors is just like picking up pens with varying line thickness.Drafting Rule of Thumb: 'Every line must mean something.'

[FliesEyes]

That is very close to the colour system I have been using since the early 90's.

Pen Weights
Green = 1.00mm
Blue = 0.70mm
Cyan = 0.70mm
Red = 0.50mm
Yellow = 0.35mm
White - 0.25mm
Magenta = 0.18mm
Grey 9 = 0.15mm

Solid Hatch Screening
250 = 90%
251 = 70%
252 = 50%
253 = 30%
254 = 10%
255 = 5%

[eutub]

Thank you! Great explanation of where the Auto CAD lines color coding came from!

[austinperpetualamateur]

I've been using civil3d for a few years now, pretty much self taught from youtube. Your work is excellent, keep up the good work

[MrMohab]

Very useful and to the point, thank you!

[poino]

Unforunately drawing presentation is seen as an afterthough, & little wonder we get queries from our manufacturers daily. Half my team don't even know about AS1100, & i'm the youngest

[niyatirajgadkar]

How do you change that thing you mentioned 'use object by lineweight and not colour by lineweight' in case I want to work with a white background?

[SUL-KSA]

Does, for example, 0.25mm line weight in AutoCad mean the exact .25mm in reaity?

[wpegley]

Yep theres no standard anymore, Dont even start on 3d modeling a rabits hole, take a flash light.
Cooperations no longer have the monopoly on programs, with the advent of serval free options, Which is great! But - being able to model isnt the same as producing a legible document.
I didnt remember the line weights / colour rule and tended to draw with line type colour settings, Now I want thats still not a standard. There needs to be perhaps seperate ones for seperate disaplines.

[Dacrocom]

I don't understand. what are standards in autocad?