Existing Work - show lighter/shaded?

Hello All:

Looking for opinions:

Should all existing work to remain be shown light/shaded (as I think) or should some existing items such as columns and walls be shown slightly darker, but not as dark as new walls and columns (as a co-worker of mine thinks)?

I think if its not changing and there is no work being done to it, it should not stand out whatsoever.

 

I think this may depend somewhat on the discipline of the work being
performed. Our standard here for buildings/construction is to have any
existing items that are staying to be a standard lineweight, existing to be
demolished is shaded and proposed work is heavier. With civil work,
existing is standard weight but shaded, to be demolished is shaded and
dashed, proposed is heavier. For us at least, it also depends somewhat on
whether any of the existing work is going to be affected by the proposed
work, are you tying new paving into existing, etc.? I believe there are
industry standards somewhere, but from what I have read in these groups, no
one seems to like or follow them.

--
John Michalik
Drafting and Design
LDD/CAD Development & Standards

should some existing items such as columns and walls be shown slightly
darker, but not as dark as new walls and columns (as a co-worker of mine
thinks)?

should not stand out whatsoever.

 

For Architectural work...

 

For architectural work most would agree as you do. Show existing as
light/shaded and show new work as heavier/darker. New should stand out,
existing should not.

--
Daniel J. Altamura, R.A.
Altamura Architectural Consulting
and SoftWorx, Autodesk Authorized Developer
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should some existing items such as columns and walls be shown slightly
darker, but not as dark as new walls and columns (as a co-worker of mine
thinks)?

should not stand out whatsoever.

 

i display the new as "darkest", but i tend to utilize a dashed linetype for items that are existing, just to differenciate. any mods to existing are specifically called out and displayed as such.

 

Please feel free to repeat these comments. The more, the better. More responses = easier to convince him!

 

we use layer states to alter the visibility of existing features depending
on the plan title.

the only time an existing feature is dominant is when it is an item to be
removed. then it is bold and dashed.

all others it is lighter line weight or shaded

responses = easier to convince him!

 

Responses from 4 people is not nearly enough!
Oh well. Thanks anyway.

 

My opinion, KISS. Existing construction = light lines. Demolition = light
lines, dashed. New construction = darker lines, with some differentiation
between things in section (walls, etc.) and things "beyond" (floor or sill
lines). The lightest of the "new" lines should be obviously darker than the
"existing" lines. Another method, if your plotting and reproduction system
allows it, is to show all the existing/demo lines screened, for instance 60%
black instead of solid.

If the distinction isn't obvious, it's meaninglesss. You can only use so
many line weights on a drawing anyway. That was the rule in hand drafting,
and computers haven't changed it. If the lines aren't clearly different,
like each line at least 150% or 175% the thickness of the next thinner one,
the visual distinction is gone. In practice that results in a maximum of 3,
maybe 4 available line weights for the bulk of your drawing, with possibly a
super-thin and/or a super-thick line in addition, which are used *very*
sparingly. Any more than that, and the distinction between lineweights
disappears, and you might as well not bother.

Given the distinctions in line weight which should be made in the "new"
stuff, there just aren't enough weights left available to try to make small
distinctions in the "existing" stuff. Think about your drawing legend: there
should be one line labeled "existing construction" and that same line should
apply to *all* of it.

should some existing items such as columns and walls be shown slightly
darker, but not as dark as new walls and columns (as a co-worker of mine
thinks)?

should not stand out whatsoever.

 

Here existing to remain is light, demo is darker and dashed, new is darkest.

should some existing items such as columns and walls be shown slightly
darker, but not as dark as new walls and columns (as a co-worker of mine
thinks)?

should not stand out whatsoever.

 

I never saw your original post but assume you wanted to know how to show
existing building/construction vs new construction. Standard practice in
Structural is to show existing with phantom lines.