Gravity
When placing a new Wall, Column, Beam or Object-type element (including a Level Dimension), you can use the Gravity function to automatically place the new element directly on top of a Slab, Roof, Shell or Mesh on the same story, thus taking on the elevation of the element it is placed on.
Gravity is useful if you are placing elements on the Floor Plan. (In the 3D window, the Surface Snap feature achieves this same effect. See Surface Snap in 3D.)
Note: Gravity only affects newly created elements and cannot be used for editing existing ones.
Level Dimensions placed with Gravity On, above Slabs, Roofs, Shells or Meshes, are associated to them.