Hi,

Could anybody assist me or advise me, I am new and in the learning process?

I drew a model of house 90’ X 50’ feet and then I draw boundary walls around 04 sides of 9" inches. My Dimensions tool is showing me outside measurement 90’ feet but in the side of the walls, the remaining space is 88’ 6" as well as another side outside measurement 50’ feet but inside of the walls the remaining space is 48’ 6".

As 1 foot is equal to 12 inches. IMeasurement issue inside 9 inches walls.skp (120.4 KB) am taking the each wall’s thickness is 9 inches so both side walls’ total width is 1 foot 8 inches.

If i will subtract 1’.8" of both walls’ space from 90’ then it should be 88’ 2"

Same like this, If I will subtract 1’.8" of both walls’ space from 50’ then it should be 48’ 6".

File is attached

Thanks