topic Re: imperial drawing with wrong areas in AutoCAD Forum

imperial drawing with wrong areas

Anonymous — Mon, 08 Jul 2019 07:09:50 GMT

i received a dwg file from a client that looks like it was taken/converted from a layout(sheet) to a model

i have to use areas in this drawing to do some mechanical calculations

being a person who is more familiar with metric system, whenever i receive such a thing i scale the whole thing by 25.4 and get areas in mm

if you look below, the dimension in magenta is just linear dimension command on his raw file that shows something different. also the room area shows 1.5 square inch which is 100% wrong.

the client is not a CAD expert and claims his drawing is correct. and im sure this drawing is having a scaling factor that completely messes up all dimensions/areas but i cant find out what exactly.

can anyone help me here ?

Re: imperial drawing with wrong areas

imadHabash — Mon, 08 Jul 2019 07:14:19 GMT

Hi,

you may need changing your dimension style and other things >> Click << >> Click << .

Regards,

Re: imperial drawing with wrong areas

Anonymous — Mon, 08 Jul 2019 07:26:50 GMT

thanks for your input and useful links

but if you notice i applied the linear command to his raw file and even his imperial dimensions/areas are wrong so i guess that indicates the file itself is being scaled....somehow

Re: imperial drawing with wrong areas

imadHabash — Mon, 08 Jul 2019 07:33:38 GMT

would you attache here just a small part from your CAD file ( before scaling ) please , for testing ? make it as AutoCAD 2013 file format ( save type ) .

Re: imperial drawing with wrong areas

Anonymous — Mon, 08 Jul 2019 07:47:51 GMT

thanks again, mate

sure here is a portion of the file

Re: imperial drawing with wrong areas

imadHabash — Mon, 08 Jul 2019 08:10:32 GMT

after opening your CAD file , i think it's NOT an accurate drawing and not follow any unit value . for that i suggest to do :

from DDUNITS command change Length type and insertion scale for your needed values .
select a trusted existing dimension distance and draw a line from it that represent your metric new distance like ( 9' inch = 228.6 mm ) .
Now scale all of your drawing by SCALE ( Reference ) to that new line in mm , to find now that you have a good trusted drawing . >> Click <<

Hope it's work fine ... 🙂

Re: imperial drawing with wrong areas

Anonymous — Mon, 08 Jul 2019 17:39:46 GMT

thanks for your help

but the issue is that i don't trust a single dimension drawn in this file. it seems like its all messed

client claims these bedrooms are 30sqm and when i scale the drawing it shows its only 6.2sqm lol

also i tried the solution you mentioned but doesn't work

Re: imperial drawing with wrong areas

pendean — Mon, 08 Jul 2019 18:03:05 GMT

As noted by others about your DWG file:
"...it's NOT an accurate drawing and not follow any unit value..."

You and your file creator need to talk with and to each other: you were sent a scaled drawing with an unknown scale, this file is useless unless you want to own (aka take liability for) the results from fixing it with ALIGN command's scale option since the DWG is littered with clear (yet fudged) dimensions.
I'm finding it hard to determine what DIMLFAC setting they used to create those dimensions myself.

Once you get an accurate 1:1 scale DWG file you can XREF it into one of your metric template files to do take-offs in metric if you need to do that.

Re: imperial drawing with wrong areas

Anonymous — Mon, 08 Jul 2019 18:15:11 GMT

by the looks of the layout and dimensions, im thinking it is a converted PDF file since no dimensions make any sense on the drawing.

also i dont even know how to fix this file in the first place tbh.