topic Re: scaling .dwg file import in Modeling

scaling .dwg file import

Anonymous — Thu, 01 Jun 2006 18:28:51 GMT

I seem to be having a problem scaling a surveyor's plan into Archicad. upon importing into archicad, what ia dimensioned as 100' in the Autocad drg measures 8'4". I have resized the imported drg so the marker 100' actually measures 100'. Are there any drawbacks to this method? if I were to scale before importing, what is the raio I would use? The translator seems only to offer 1mm, 1m 1 inch etc. looks like this ratio is a bit odd (8'4" = 100')

Re: scaling .dwg file import

Stephen Dolbee — Thu, 01 Jun 2006 18:43:04 GMT

I've had the same problem importing autocad drawings from surveyors. I don't think there are any drawbacks to your method. That is how I have done it. I think the ratio depends on what scale the surveyor used. In your case 12:1.

Steve

Re: scaling .dwg file import

TomWaltz — Thu, 01 Jun 2006 18:43:17 GMT

caitlin wrote:
I seem to be having a problem scaling a surveyor's plan into Archicad. upon importing into archicad, what ia dimensioned as 100' in the Autocad drg measures 8'4". I have resized the imported drg so the marker 100' actually measures 100'. Are there any drawbacks to this method? if I were to scale before importing, what is the raio I would use? The translator seems only to offer 1mm, 1m 1 inch etc. looks like this ratio is a bit odd (8'4" = 100')

It's smaller by a factor of 12, which means you should change the import unit to 1" instead of 1'-0",

Re: scaling .dwg file import

David Pacifico — Thu, 01 Jun 2006 18:44:43 GMT

It's off by a factor of 12
Civil dwgs always need to be brought in 1 to an inch.
Everybody else 1 to a foot.

Re: scaling .dwg file import

Anonymous — Thu, 01 Jun 2006 20:25:45 GMT

David wrote:
It's off by a factor of 12
Civil dwgs always need to be brought in 1 to an inch.
Everybody else 1 to a foot.

I think you have it reversed (or I don't understand you correctly). The drawing units for a civil drawing are typically set to one foot. If it is translated using the architectural standard of one inch then everything will be one twelfth of its correct size. Similarly if everything comes in 25.4 times too big then the source file was in mm.

Re: scaling .dwg file import

David Pacifico — Thu, 01 Jun 2006 20:43:54 GMT

Yes, sorry, I had it mixed up.
Civil set to 1 to a foot.