Sketchup Model #2 and stair designs

Top: Slanted, Bottom: Contrast

 

 I will most likely take my first Sketchup model into the final submission. It needs a bit of remodeling/developing.

Below are a few stair designs which I considered for my models:

The first stair design will be used for the below ground.

The 2nd stair design will be used for the above ground.