Create column drops
In order to increase punching resistance, you can insert drop panels, or column drops, within concrete slabs at points where they are supported by columns. Column drops are slab thickenings that can be positioned above the slab, below the slab, or both. Column drops are rectangular in plan, and aligned to the column axes. Column drops are always positioned centrally over the supporting column.
The extent of the column drop is limited by the extent of the slab boundary. The cut back drop shape may not be rectangular.
Note: In order to define a slab drop you must have
already defined the concrete slab to which it applies.