I have created a 3D topo from a OS survey dwg, I left the units to auto detect and set the level as ground level.So the dwg is set at ground level and the 3D contours are above.The levels are about 45m above sea level, my plan was to create a floor and then offset it from the ground level to symbolise a raised water level. It worked but when I offset the floor level I only need to offset it 1200mm for it to completely cover my contour map. I suspect this is an unit level isssue has anyone experienced this before or got any advice? Thanks
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Sounds like you have answered all the questions yourself. Set the Units to the correct one manually instead of Automatic. You can even open the CAD file to understand which Units they use if you are not sure.
Yeah I did try setting units to meters manually ( presume OS would use meters as standard) but alot of data from drawing seemed to disappear. Toan does the rest of my logic for using a floor to show flooding make sense to you? Is this how you would do it?
@roscopeco2000 wrote:
Yeah I did try setting units to meters manually ( presume OS would use meters as standard) but alot of data from drawing seemed to disappear. Toan does the rest of my logic for using a floor to show flooding make sense to you? Is this how you would do it?
Let's not presume anything and actually open the survey DWG to get the correct information. One reason you don't see some parts of the DWG when you linked it in is that they are out of the view range. So if the DWG is 45m and your view range is lower than that then some or all of the DWG content do not show on that view.
If meters is the correct Units then use it to link the file. Increase the view range to make sure the entire DWG geometry is covered.
I am not a Civil guy but I think it's fine to create a level to indicate the flood level, set it to not structural and not building story.
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