Platform link bridge

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Bridge-linked platform walkway: two Warren through-trusses (hollow CHS or HEB with bolted node gussets), IPE cross beams and channel stringers carrying bar grating, top cross struts with X laterals and walkway lights, bottom plan bracing, ISO 14122 handrails on both edges, outriggers with a ladder cable tray on +Z and a pipe shelf on −Z, a pinned bearing at −X and a guided PTFE / stainless sliding bearing at +X with a hinged transition flap over the expansion gap (it extends past x = +length/2 and rests 2 mm above y = 0 on the next deck). Walkway top at y = 0, spanning x = −length/2 … +length/2 along X; the bearing masonry plates sit about 0.5 m below the walkway at x = ±(length/2 − 0.25) and must rest on the platform steel.

EN 1993-2ISO 14122-2EN 1337 (bearings)NORSOK N-004

Drag to orbit, scroll to zoom

Parameters

Span– m

Walkway width– m

Truss depth– m

Members

Cable tray

Pipe shelf

Lights

Installation

$npx -y https://decktwin.com/cli/deck-twin-0.2.2.tgz add bridge

Copies structure/bridge.tsx and the shared lib/ into src/components/deck-twin/. Needs three, @react-three/fiber and @react-three/drei. See installation for the manual route.

Usage

import { Canvas } from '@react-three/fiber'
import { OrbitControls } from '@react-three/drei'
import { Stage } from './components/deck-twin/lib/stage'
import { Bridge } from './components/deck-twin/structure/bridge'

export default function Scene() {
  return (
    <Canvas shadows camera={{ position: [8, 5, 9], fov: 35 }}>
      <Stage>
        <Bridge />
      </Stage>
      <OrbitControls makeDefault />
    </Canvas>
  )
}

Props

Prop	Type	Default	Range
`length`	number (m)	null	8 – 100
`width`	number (m)	null	0.8 – 4
`depth`	number (m)	null	2.4 – 6
`truss`	"chs" \| "heb"	null
`cableTrays`	boolean	null
`pipeShelf`	boolean	null
`lights`	boolean	null
`...group`	position, rotation, scale…

P&ID

Elevation: two horizontal chords joined by a zig-zag Warren truss, with a pinned support (triangle) at one end and a sliding support (roller circle) at the other; in plan, two parallel lines between the platform outlines labelled with the bridge name.

Layout plan convention (structural / plot plan drawings) (structural elevation)

On P&IDs a bridge appears only as off-page arrows "via bridge to RP" on lines that cross it. The sliding end is what lets the platforms move relative to each other.

Bridge structural drawing (EN 1993-2) fields and the props they set

Spanlength

Walkway widthwidth

Truss depthdepth

Truss typetruss

Cable trayscableTrays

Pipe shelfpipeShelf

Walkway lightslights

Typical suppliers

Fabricated to project specification · Fluorocarbon (bearings) · mageba (bearings). The geometry is generic and sized from public standards. It is not vendor CAD.

For agents

Machine-readable entry with props, ranges, defaults and ports:

$npx -y https://decktwin.com/cli/deck-twin-0.2.2.tgz info bridge

Or fetch /r/bridge.json, or copy a ready-made instruction:

Add the Deck Twin "Platform link bridge" component to this project. Run `npx -y https://decktwin.com/cli/deck-twin-0.2.2.tgz add bridge` (it copies the file and the shared lib into src/components/deck-twin/), then `npx -y https://decktwin.com/cli/deck-twin-0.2.2.tgz info bridge` for its props, ranges and ports. Render <Bridge /> inside a React Three Fiber <Canvas shadows>, wrapped in <Stage> from src/components/deck-twin/lib/stage. Set props from my data (metres, NPS in inches, ASME class) and leave the rest at defaults. Install three, @react-three/fiber, @react-three/drei and @types/three if they're missing. Full guide: https://decktwin.com/skill/SKILL.md