220 modular steel stairs, ramps, decks, balconies, columns, rails and ladders at real size, in two looks, with LODs, colliders and snap points.Tested in Unity 6000.3 (URP 17.3) and Unity 6000.5 (URP 17.5). All materials use URP Lit with base colour, normal, metallic-smoothness and occlusion maps. Built-in and HDRP are not supported out of the box: the meshes, LODs, colliders and textures work in any pipeline, but the materials would need converting. The demo walker works with both the Input Manager and the Input System package.Build industrial access platforms, mezzanines, catwalks and stairs from one consistent set of steel parts at real-world size.The modular pieces snap together on a 0.5 m grid: stairs, ramps, deck modules, steel balconies, columns, beams, braces, guardrails, gates, ladders, wall ledgers, floor panels and connections. Neighbouring decks share columns, and rails, gates and handrails all meet at the same 1.1 m height.Two looks are included: Industrial (galvanised steel, yellow rails) and Clean White (white steel, dark grey rails). Every piece has the same shape, size, collision and snap points in both looks, so you can swap a piece for its twin in place.Suitable for industrial, sci-fi, survival, shooter and simulation projects, and for architectural walkthroughs and training scenes. Gates push open when the player walks into them. A walkable demo scene is included.Full item list:Stairs (23): 10 straight stairs, 13 dog-leg stairsRamps (6)Ladders (10) 6 caged ladders, 4 short laddersDeck modules (32)Floor and grating panels (5)Ready assembled platforms (3): access platform, railed platform, stair landingColumns and beams (46)Cross bracings (12)Balcony structures (21): posts, consoles, braces and tie rodsGuardrails and railings (46)Gates (2)Roof hatch (1)Connections and fixings (13)- Number of meshes / prefabs: 220 pieces in 2 looks: 448 FBX models, 440 prefabs- Polygon count (triangles per piece):- full detail (LOD0): 176 – 226,396 (median 8,004)- game (LOD1): 12 – 14,162 (median 284)- low (LOD2): 12 – 3,541 (median 140)- LOD: 3 levels per piece in a LODGroup- Collision: convex mesh colliders on every piece; stairs and ramps have a walkable slope- Snap points: SOCKET_ transforms on every prefab- Number of textures: 3,647 PNG- Texture dimensions: 512, 1024 and 2048 px (power of two)- Materials: 960 URP Lit materials, PBR (base colour, normal, metallic-smoothness, ambient occlusion)- UV mapping: Yes- Rigging: No- Animation: None (the gates swing through physics joints)- Render pipeline: URP. Tested on Unity 6000.3 and 6000.5- Real-world scale in metresClaude (Anthropic) was used to write the specifications and the code that generates the models. The geometry, levels of detail, collision and textures are then built by that code; no AI image or 3D-generation models were used. Every piece was reviewed by a person and tested in Unity.
