{"data":{"id":"13684","slug":"modern-rail-and-metro-network-ballasted-track-straight-4c5f4217","title":"Ballasted track straight 6 m (Modern Rail and Metro Network)","summary":"A 6 m ballasted track module with concrete sleepers, rail pads, cast shoulders and spring clips.","description":"A 6 m module of modern ballasted permanent way: a trapezoidal ballast prism, ten prestressed concrete monobloc sleepers waisted at the centre and deepened under the rail seats, elastomer rail pads, cast shoulders, spring clips and 172 mm flat bottom rail. Ballast base at y=0, concrete sleeper tops at y=0.41 and railhead top at y=0.60; 1,435 mm gauge with rail centres at x = +/- 0.7525. The module origin sits on the rail-a port at the track centreline and the module runs toward +Z on the 6 m grid. Bounding size 4.40 x 0.60 x 6.00 m (X x Y x Z). Metre units, +Y up, +Z forward, resting at y=0. Static geometry; no rig, collision or navigation data.","status":"published","url":"https://3dassets.dev/assets/modern-rail-and-metro-network-ballasted-track-straight-4c5f4217","cdnUrl":"https://cdn.3dassets.dev/assets/13684/v1/model.glb","downloadUrl":"https://3dassets.dev/download/modern-rail-and-metro-network-ballasted-track-straight-4c5f4217","thumbnailUrl":"https://cdn.3dassets.dev/assets/13684/v1/thumb.webp","posterUrl":"https://cdn.3dassets.dev/assets/13684/v1/poster.webp","blurhash":"U6Bz8_WA00s:M|D%of%M00oz~qR*%L_3WBIB","category":{"slug":"roads-infrastructure","title":"Roads & Infrastructure"},"tags":[{"slug":"modern","title":"Modern"},{"slug":"realistic","title":"Realistic"},{"slug":"modular","title":"Modular"},{"slug":"kit","title":"Kit / Set"}],"license":{"slug":"cc0-1.0","name":"CC0 1.0 Universal","url":"https://creativecommons.org/publicdomain/zero/1.0/","attributionRequired":false},"contributor":{"username":"3dassets","name":"3D Assets","url":"https://3dassets.dev/u/3dassets"},"stats":{"fileSize":97636,"triangles":1952,"vertices":5856,"meshes":5,"materials":5,"textures":0,"animations":[],"boundingBox":{"min":[-2.2000793481246377,-0.00015106066144171537,0],"max":[2.2000793481246377,0.6000622101929618,6]},"sizeMeters":[4.4,0.6,6],"hasDraco":false,"hasMeshopt":false,"hasKTX2":false,"extensionsUsed":["KHR_mesh_quantization"]},"aiGenerated":true,"aiModel":"Claude Fable 5.1","downloads":0,"publishedAt":"2026-09-07T15:40:37.242Z","updatedAt":"2026-09-07T15:40:37.340Z","usage":{"threejs":"import { GLTFLoader } from 'three/addons/loaders/GLTFLoader.js'\n\nconst loader = new GLTFLoader()\nloader.load('https://cdn.3dassets.dev/assets/13684/v1/model.glb', (gltf) => {\n  scene.add(gltf.scene)\n})","r3f":"import { useGLTF } from '@react-three/drei'\n\nexport function BallastedTrackStraight6MModernRailAndMetroNetwork(props) {\n  const { scene } = useGLTF('https://cdn.3dassets.dev/assets/13684/v1/model.glb')\n  return <primitive object={scene} {...props} />\n}\nuseGLTF.preload('https://cdn.3dassets.dev/assets/13684/v1/model.glb')","modelViewer":"<model-viewer src=\"https://cdn.3dassets.dev/assets/13684/v1/model.glb\" alt=\"Ballasted track straight 6 m (Modern Rail and Metro Network)\" camera-controls auto-rotate></model-viewer>","blender":"# Blender 4.x: File > Import > glTF 2.0, or from the Python console after downloading the file.\nimport bpy\nbpy.ops.import_scene.gltf(filepath='model.glb')  # from https://cdn.3dassets.dev/assets/13684/v1/model.glb\n# Metres and +Y up are converted to Blender's Z-up scene automatically.","godot":"# Godot 4: copy model.glb into res://models/ and the editor imports it as a scene.\nvar packed := load(\"res://models/model.glb\") as PackedScene\nvar model := packed.instantiate()\nadd_child(model)","unity":"// Unity: import model.glb with glTFast (Package Manager: com.unity.cloud.gltfast) and drag the prefab in,\n// or load it at runtime straight from the CDN:\nusing GLTFast;\nvar gltf = new GltfImport();\nif (await gltf.Load(\"https://cdn.3dassets.dev/assets/13684/v1/model.glb\")) await gltf.InstantiateMainSceneAsync(transform);"}}}