The model is made in 3ds Max 2017. There are .max (2017 and 2014) and .fbx files in the archive.
If you import a .fbx file into the project, then you will see files with the name "must_smooth _ ##" on them, you must superimpose the turbosmooth modifier to smooth the geometry.
All geometry is translated into Editable Mesh.


Step sizes:
depth - 30 cm;
height - 15 cm;


Polygonazh (not including two additional balusters)
Polys: 569,494
Verts: 285 628