dimension

Hi.

I want to give dimension from Column to Platform Opening how we give it
because platform opening not taking point for selection.

goto measure >> take graphics-midpoint combination and select centre  line of your plotform opening.please make sure you in wireframe mode to get good result.

Try with P-Point Option.

sorry but it is in draft not in design i forgot to mention that point.

P-POINT and mid point options are avaialable in draft also, while creating dimensions this options will appear

In draft also you have one option called mid point,end point etc.try these options

when you click on platform opening it is not showing mid point or end point.

Try with P-Points.

platform opening don't have p-points

platform opening don't have p-points

If a NEG was used to cut the opening it has a P-Point.