UCS Problem

[happyunited]

Problems!!!

I have a drawing which is set up as normal in World UCS base 0,0,0 etc

I have recieved some drawings from the Architect which look right on the screen (cross hairs white and stright) but when I xref this into my drawing the grid lines are off and they dont line up with mine (which is right)!!

I have went into the Arch drawing and I see they have set up an unnamed UCS when i set UCS back to world the cross hairs are not straight anymore and are off the same sort of angle as the grid lines are on mine.

I have attached an image to show what I see!

their Base is also set up nearer the building location -why would you need to do this? the building is a bit away from 0,0,0 but thats the way i have always drew stuff.

what options do i have? just go into their drawing and rotate it to match mine?

thanks folks!

[GE13579]

Does it help to change UCSFOLLOW to 1?

[NBC]

the World UCS is usually the preffered UCS to use, as it then gives accurate sharable co-ordinates of entities within the design.
in your case above, the Unnamed UCS looks like something that has been setup to co-ordinate the grid-lines of a building or some other feature to be constructed.

[happyunited]

this is what it looks like when I hit world on the Architects drawing - why would you change the croaa hair location?

[NBC]

see my post above your picture

[happyunited]

Does it help to change UCSFOLLOW to 1?

ok ill try that. what does that do?

[happyunited]

the World UCS is usually the preffered UCS to use, as it then gives accurate sharable co-ordinates of entities within the design.
in your case above, the Unnamed UCS looks like something that has been setup to co-ordinate the grid-lines of a building or some other feature to be constructed.

OK but what do i go if i need to xref that into my drawing? do i just go in and rotate their drawing to match mine?

[happyunited]

i have changed USCFOLLOW on the architects dwg and tried xref in and again its out. here you can see how much its out by they should all be in line!!!

[happyunited]

sorry for all the questions but this is annoying me!! :( :(

another thing why are the co ords displayed different on the two seperate drawings like this?

[Primal Scientist]

I have also found this when working with external Architects.

Could the co-ordinate differences have something to do with the units by any chance?

[eldon]

another thing why are the co ords displayed different on the two seperate drawings like this?

In the first display, the number of decimal places is 2, and in the second picture, the number of decimal places is three, but there are so many figures, that AutoCAD has got fed up and resorted to displaying in exponential format.

With that number of figures in the coordinate, my guess is that the units are mm, and you really can't construct a building to three decimal places in the mm :shock:

Try setting the Length unit precision LUPREC to zero (i.e. to the nearest mm) :D

[beammeup]

I recently had problem with a drawing that the base was changed for a drawing I was xrefing in. If I went into the drawing being xrefed the coordinates were identical to the same locale in the drawing I was bringing the xrefs into. However when i xrefed in that drawing it didn't come in the right spot. I found out through either the BASE command or INSBASE command that this was changed and wasn't 0,0,0 like it should be. By changing the base setting to 0,0,0, (through either BASE or INSBASE ) in the drawing I was xrefing in; the xref came in the right location. give this a shot and see what happens. Can you post the dwg or too big? plus can you turn your ucs icon on so we can see it in your posts.

[beammeup]

upon looking at what you posted further. The first post showing the unnamed ucs with base different from 0,0,0 is typical if you move your ucs to facilitate drawing lines or changing view. Set it back to world by typing in UCS enter default world, then type PLAN and see what orientation the architects drawing comes in. Check BASE and see if it 0,0,0 if not they may have moved it. The only reason I can think that they may have done this is coordinate inserting this as an xref and having it come into site plan in real world coordinates.
the two different coordinate listings; the second looks like UNITS is set to scientific

[happyunited]

Thanks for your help. We have just found out out structures dept having been rotating the Architects dwgs so that is what we will do for now.

[NBC]

Thanks for your help. We have just found out out structures dept having been rotating the Architects dwgs so that is what we will do for now.

I see trouble ahead !

[happyunited]

I see trouble ahead !

Hmmm me too but I havent been working on this project and just realised the problem yesterday when I was asked to xref in a kitchen layout. I have raised the question but i dont think its that concerning for the drainage layout we have designed.

My line manager says its ok :)(:

[NBC]

My line manager says its ok :)(:

Hmmmm, ok.
He obviously knows a fair bit about AutoCAD and the pitfalls of moving things.

[happyunited]

Hmmmm, ok.
He obviously knows a fair bit about AutoCAD and the pitfalls of moving things.

he knows **** all and i have tried to explain but he doesnt want to know. I have done my bit. I am just glad my initials are not on the drawinsg :)

[NBC]

fair enough, i wasn't having a go or anything.
it's just that line managers / engineers don't give a stuff about CAD. they just want the finished product yesterday, even though they rarely give the information you need to do the job until tomorrow.

[Primal Scientist]

fair enough, i wasn't having a go or anything.
it's just that line managers / engineers don't give a stuff about CAD. they just want the finished product yesterday, even though they rarely give the information you need to do the job until tomorrow.

That is so right!!

I work with them here and they just think drawings are plucked out of thin air.

Clueless.....:wink:

[happyunited]

thats exactly how it is. The deadline has passed blah blah and if this isnt directlt affecting my draiange design i dont give monkey's!