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**CADiva** · October 19, 2018, 05:09 PM

Two thoughts:

1) Build it as a "stair": the monolithic style would provide the sloping base you're looking for.
2) This could be one of the few times an in-place family could be useful (could also be built as a generic model family).

**Twiceroadsfool** · October 19, 2018, 06:17 PM

Normal Floors, and Normal Slab Edges, to create the underside.

**Rex Wave** · October 20, 2018, 01:11 PM

As CADiva says, build it as a stair. Here is an example:

This is a view down into a model of a 60,000 seat stadium. I used cast-in-place stairs for the seat rows and for the traffic steps:

The stairs can be "segmented' in plan to join at arbitrary angles. The joints between segments are geometric within the stair editor. The definition of each segment was done with a system family called "Monolithic Run". This was a continuous drawing process that can be started, interrupted and resumed with care. Although the joints between segments aren't exact, I left the work in this state and moved on because my purpose wasn't architecture but AV design - The model got close enough to illustrate the AV aspects.
I hope this sets you on a useful path.

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