# Stair Core (Velodrome and Track Cycling)

A concrete stair core up to the upper concourse: a 3 by 4.6 m base, a solid flight of ten steps against a white core wall, a steel balustrade on the open side and a landing at 3.35 m. It stands on its own, so it drops against a seating tier or a wall.

- **URL:** https://3dassets.dev/assets/velodrome-and-track-cycling-stair-core-fafe2a55
- **GLB (direct, CORS *, immutable):** https://cdn.3dassets.dev/assets/38009/v1/model.glb
- **Download (counted):** https://3dassets.dev/download/velodrome-and-track-cycling-stair-core-fafe2a55
- **Licence:** CC0 1.0 Universal: https://creativecommons.org/publicdomain/zero/1.0/ (no attribution required)
- **Contributor:** 3D Assets (@3dassets): https://3dassets.dev/u/3dassets
- **Category:** Buildings & Architecture
- **Tags:** Modern, Stylized, Interior
- **Geometry:** 268 triangles, 804 vertices, 3 meshes, 3 materials, 1 textures
- **Size (m):** 3.22 × 4.4 × 4.6
- **Animations:** none
- **File size:** 0.03 MB
- **Downloads:** 0
- **AI used (contributor-reported):** yes; model: Claude Opus 5

## About

A concrete stair core up to the upper concourse: a 3 by 4.6 m base, a solid flight of ten steps against a white core wall, a steel balustrade on the open side and a landing at 3.35 m. It stands on its own, so it drops against a seating tier or a wall. Overall 3.220 x 4.400 x 4.600 m (X x Y x Z), metre units, +Y up, +Z forward, resting on y=0. Velodrome and Track Cycling / velodrome-lp-v1: faceted pale pine track boards, grey concrete, brushed steel, charcoal rubber and three painted accents in blue, red and yellow, with embedded procedural wood and concrete maps and no custom shaders. There are no people in this pack, and every screen, board, banner and panel face is blank: nothing here names or depicts a real venue, team, race or manufacturer. Static geometry; no rig, animation, collision or navigation data.

## Use with three.js

```js
import { GLTFLoader } from 'three/addons/loaders/GLTFLoader.js'

const loader = new GLTFLoader()
loader.load('https://cdn.3dassets.dev/assets/38009/v1/model.glb', (gltf) => {
  scene.add(gltf.scene)
})
```

## React Three Fiber

```jsx
import { useGLTF } from '@react-three/drei'

export function StairCoreVelodromeAndTrackCycling(props) {
  const { scene } = useGLTF('https://cdn.3dassets.dev/assets/38009/v1/model.glb')
  return <primitive object={scene} {...props} />
}
useGLTF.preload('https://cdn.3dassets.dev/assets/38009/v1/model.glb')
```

## <model-viewer>

```html
<model-viewer src="https://cdn.3dassets.dev/assets/38009/v1/model.glb" alt="Stair Core (Velodrome and Track Cycling)" camera-controls auto-rotate></model-viewer>
```

## Blender

```python
# Blender 4.x: File > Import > glTF 2.0, or from the Python console after downloading the file.
import bpy
bpy.ops.import_scene.gltf(filepath='model.glb')  # from https://cdn.3dassets.dev/assets/38009/v1/model.glb
# Metres and +Y up are converted to Blender's Z-up scene automatically.
```

## Godot

```gdscript
# Godot 4: copy model.glb into res://models/ and the editor imports it as a scene.
var packed := load("res://models/model.glb") as PackedScene
var model := packed.instantiate()
add_child(model)
```

## Unity

```csharp
// Unity: import model.glb with glTFast (Package Manager: com.unity.cloud.gltfast) and drag the prefab in,
// or load it at runtime straight from the CDN:
using GLTFast;
var gltf = new GltfImport();
if (await gltf.Load("https://cdn.3dassets.dev/assets/38009/v1/model.glb")) await gltf.InstantiateMainSceneAsync(transform);
```

---
JSON: https://3dassets.dev/api/v1/assets/velodrome-and-track-cycling-stair-core-fafe2a55 · Loads with a plain GLTFLoader: no Draco/KTX2 loaders needed.