Name: spiral_staircase_04
Version: 2013
Preview: Yes
Units: Millimeters
Dimension: 1999.55 x 1999.5 x 4053.02
Polys: 813 701
XForm: Yes
Box Trick: Yes
Model Parts: 14
Render: V-Ray
Formats: 3Ds Max 2013 FBX
height ladder 3000 mm
diameter 2000 mm
width of the march 900 mm
riser height 200mm
height of balusters 900 mm

Who works with V-Ray version lower than 3.1 pay attention to materials section BRDF (Microfaset GTR (GGX)) if your version is older than 3.1 – this option will be empty and you have to choose:
BlinnWard or Phong depence on material.