Z NOT ZERO

[tom]

I have all (I think) Z parameters set to 0 (zero). I draw a polyline and confirm its elevation/Z=0 via Properties. However:

1. If I then draw a line that is attached to a part of the polyline, the line is drawn at a Z elevation NOT zero.

2. Also, if I explode the polyline, the segments now how a non zero Z value

This non zero Z value is always the same random elevation.

How do I ensure that all elements are drawn at the Z=0 elevation?

[paullimapa]

I would make sure UCS is set to WORLD

and then enter command PLAN and make sure that's set to WORLD
Now enter ELEVATION command and make sure that is 0 before you start drawing your PLINE and LINE

[Brock_Olly]

It's because the existing line you start from has a different Z value, you should select all the existing lines and change 'start Z' and 'End Z' to 0 

[tramber]

Yes, in the properties palette.

Last but not least, you can also use the OSNAPZ parameter. to be sure to work on the proper elevation we were talking about.

(unless my solution is not on LT, for wich I apologize, if so :=))

[pendean]

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@tramber wrote:

...you can also use the OSNAPZ parameter...

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Not in LT, the topic of this forum.

[tramber]

That does not surprise me !

Alternative : @tom , do like me (because OSNAPZ is not so practical, I, in fact, almost never use it), but I can hit .z then 0,0,0 or a click on a point I am 100% sure it is on 0....

And then, my polyline starts at the right elevation (meaning zero).

a very easy macro to put behind a button, in the tool palette, for exemple :

^c^c_pline;.z;0,0,0;\

.z is a filter you can also obtain it from a CTRL+Right Click