You can connect two perpendicular dimension lines. Connecting dimension lines makes your drawings clearer and easier to read. For example, you might want to link dimension lines of embedded objects in a cast unit, floor beams in a floor plan, or anchor bolts in an anchor bolt plangeneral arrangement drawing that displays the anchor bolt layout
In an open drawing, hold down Ctrl and select two perpendicular dimension lines to connect.
On the Dimensioning tab, click Link dimensions.
If you want to unlink the dimension lines you linked, select the linked dimension lineline that visualizes the distance between the defined dimension points
Separate dimensions can be combined into a longer dimension line.