{
  "id": "city-sack-hand-truck",
  "type": "model",
  "title": "二輪の荷運び台車",
  "titleEn": "Two-wheel sack hand truck",
  "description": "袋や箱の運搬を表現する、湾曲した鋼管フレーム、奥行きのあるすくい板、荷支え、車軸、空気入りタイヤ風の二輪、グリップ、背面グライドを備えた縦型台車。パレットジャッキや買物カートとは異なる静止小道具。耐荷重・運搬作業・安全性は未検証。 ゲーム・可視化向け。製造・構造設計・3Dプリント用途は未検証。",
  "descriptionEn": "Upright two-wheel hand truck for depicting sack or box hauling, with curved tubular frame, deep toe plate, fixed vertical load-support strips, transverse axle, pneumatic-style tires, protected grips and rear glide rails. Distinct from a pallet jack or basket shopping trolley. Static unrigged prop; no load rating, hauling performance or safety validation. For games and visualization; not validated for manufacture, structural engineering or 3D printing.",
  "category": "urban",
  "tags": [
    "city",
    "street",
    "original",
    "hand-truck",
    "sack-truck",
    "dolly",
    "logistics",
    "荷運び",
    "台車"
  ],
  "author": "Xenoah",
  "license": "CC-BY-4.0",
  "version": "1.0.0",
  "status": "public",
  "created": "2026-10-14",
  "updated": "2026-10-14",
  "thumbnail": "https://xenoah.github.io/meshcopia/assets/city-sack-hand-truck/thumbnail.png",
  "preview": "city-sack-hand-truck.glb",
  "unit": "m",
  "upAxis": "Y",
  "triangles": 28768,
  "dimensions": [
    0.51,
    1.203922,
    0.593
  ],
  "uv": "Automatically unwrapped UV0 for each named static assembly; islands can overlap between assemblies. Not a packed unique lightmap or shared trim atlas. Solid-color PBR materials, no image textures. STL carries geometry only, without colors or UVs.",
  "provenance": {
    "method": "Original AI-agent-authored procedural city geometry",
    "tool": "Blender 4.3.2; Meshcopia city generator 1.0",
    "rights": "Original geometry and material design created for Xenoah Meshcopia under the owner request for CC-BY-4.0 publication. No third-party meshes, scans, brands, logos or font files.",
    "generatorUrl": "https://github.com/Xenoah/meshcopia/blob/main/scripts/city/compact_mobility.py",
    "sourceSha256": "1d8f70d403e991664b31a3a697ffd8a5c5df54dd99aadbb208b327c315590ead",
    "stlSha256": "26e35b492a20f5e77764612e7a20e9cbc832c83968204608b2784cc8983e3bfc",
    "alternateFormat": "Binary STL derived from the exact reimported GLB, meters and Y-up. Visual prop only, not manufacturing or print validated.",
    "assemblyMethod": "Original closed mesh components with bevels and curved tubes, converted and joined into named static assemblies before export. No external models or texture images; no decimation."
  },
  "usages": [
    {
      "relationship": "original",
      "project": "Meshcopia",
      "sourceUrl": "https://github.com/Xenoah/meshcopia",
      "sourcePaths": [
        "scripts/city/compact_mobility.py",
        "scripts/city/common.py"
      ],
      "selectors": [
        "city-sack-hand-truck",
        "Left pneumatic wheel assembly",
        "Right pneumatic wheel assembly",
        "Curved upright tubular load frame",
        "Reinforced toe plate assembly",
        "Axle and structural wheel brackets",
        "Rear stair glide supports",
        "Protected ergonomic handle grips"
      ],
      "context": "Original static urban prop created for the Meshcopia library. Selectors name the generator asset ID and the exact exported mesh assemblies. No external deployment or reuse claimed."
    }
  ],
  "pageUrl": "https://xenoah.github.io/meshcopia/assets/city-sack-hand-truck/",
  "manifestUrl": "https://xenoah.github.io/meshcopia/api/assets/city-sack-hand-truck.json",
  "attribution": "Two-wheel sack hand truck by Xenoah / Meshcopia\nhttps://xenoah.github.io/meshcopia/assets/city-sack-hand-truck/\nCC BY 4.0 — https://creativecommons.org/licenses/by/4.0/\nChanges: none. If modified, replace this line with a description of your changes.",
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      "url": "https://xenoah.github.io/meshcopia/assets/city-sack-hand-truck/source/city-sack-hand-truck.stl"
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      "notice": {
        "bytes": 398,
        "filename": "LICENSE.txt",
        "sha256": "598dc02bc371b05ab57bf62d72563630dff2ef74bb882b9f564c0453edc72ed5",
        "text": "Two-wheel sack hand truck by Xenoah / Meshcopia\nCopyright (c) 2026 Xenoah\nCC BY 4.0: https://creativecommons.org/licenses/by/4.0/\nSource: https://xenoah.github.io/meshcopia/assets/city-sack-hand-truck/\nProvided as-is, without warranties (license Section 5).\nChanges: none.\nAdditional changes: Converted unchanged source GLB geometry to FBX, with documented compatible material/texture derivatives.\n"
      },
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        "state": "published-verified"
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  "previewUrl": "https://xenoah.github.io/meshcopia/assets/city-sack-hand-truck/source/city-sack-hand-truck.glb"
}