L-shaped staircase for open stair hall
22 steps
Minimum width of steps is approximately 1100 mm
The height of the finished floor of the 2nd floor of the staircase is calculated at 4000 mm
(if necessary, you can adjust the FFD 2*2*2 modifier to your height)

Textures and materials have logical names
Texturing UnwrapUVW
V-ray materials are obtained by conversion

Corona version 9
CoronaLegacyMtl + Vray Materials
In CoronaRender 6 and below CoronaLegacyMtl=CoronaMtl
CoronaLegacyMtl requires Corona Renderer version 1.5 or higher, as the maps are designed to use PBR (roughness-metallic)

Vray version 6
Vray materials are obtained using Vray-converter
Those who work in V-Ray version lower than 3.1, be careful, in the materials in the BRDF section there is Microfaset GTR (GGX), if your version is older than 3.1, then the BRDF field will be empty. Select Blinn, Phong or Ward - what is preferable for you.
All maps are designed for the PBR roughness-metallic workspace.