{
 "slug": "spiral-staircase",
 "triangles": 7560,
 "texture_px": 2048,
 "triangles_light": null,
 "texture_px_light": null,
 "files": {
  "glb": {
   "name": "spiral-staircase.glb",
   "bytes": 922384
  },
  "blend": {
   "name": "spiral-staircase.blend",
   "bytes": 757364
  },
  "fbx": {
   "name": "spiral-staircase.fbx",
   "bytes": 1601580
  },
  "obj": {
   "name": "spiral-staircase-obj.zip",
   "bytes": 953049
  },
  "usdz": {
   "name": "spiral-staircase.usdz",
   "bytes": 1513731
  }
 },
 "extras": {
  "license": "CC0-1.0",
  "source": "grab3d.com",
  "dimensions_m": "1.800 x 1.800 x 4.090",
  "triangles": 7560,
  "textures": "PBR 2048px: base color, roughness, metallic, normal (baked)",
  "generator": "Created by grab3d",
  "created": "2026-10-18",
  "real_size": "spiral staircase, 1.8 m diameter, 3.0 m high (16 steps of 18.75 cm, one full turn)",
  "notes": "fits a 2 x 2 m grid cell (origin bottom centre = cell centre); first step at -Y, turning counter-clockwise, step 16 is a landing at 3.0 m: placed on the floor tiles (z = 0.1) it meets the next storey's floor level (3.1); dark metal centre column and balusters, honey wood treads and helical handrail; no text",
  "set": "Cozy Modular Building Kit"
 },
 "origin": {
  "method": "procedural",
  "detail": "Built procedurally with Blender scripts. The scripts were written with the help of an AI coding assistant. No generative AI model produced the geometry or textures directly.",
  "ai_content": false,
  "ai_assisted_code": true
 }
}