Offshore deck module

Offshore topsides deck section: primary girders (HEB or welded plate girders) on the leg lines with fin-plate connections and web stiffeners, IPE secondaries, 12 mm deck plate with grated drain gutters and 3" drain outlets through liquid-seal pots (ports drain-1…n, flange faces pointing down) or bar grating, coaming, ISO 14122 guard rail with self-closing gated openings, escape-route markings, CHS legs with node cans and chevron bracing below, and stub columns up to a stacked module. Walking surface: top of the floor at y = 0, so equipment placed at y = 0 sits on it. Girders and legs go below (leg foot at y = -legHeight, to sit on a jacket at y = 0); stack another module at y = upperDeckAt with legHeight: 0 (otherwise its legs run down through this floor).

Installation

Copies structure/deck-module.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 { DeckModule } from './components/deck-twin/structure/deck-module'

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

Props

P&ID

Plan view: the deck outline with dash-dot structural grid lines (rows and columns, e.g. A–D and 1–6) and circles at the jacket leg positions; deck elevations (EL +28.000 TOS) written in the corners.

Layout plan convention (structural / plot plan drawings); ISO 19902

Not on P&IDs. Equipment layouts use this outline as the background; the grid labels locate equipment. A smaller framed rectangle with bracing is a module-frame.

Structural design basis / deck framing drawing (ISO 19902, NORSOK N-004) fields and the props they set

Deck lengthlength

Deck widthwidth

Floor typefloor

Primary girderprimary

Secondary beamsecondary

Secondary spacingsecondarySpacing

Number of legslegs

Leg spacing XlegSpanX

Leg spacing ZlegSpanZ

Leg diameterlegDiameter

Typical suppliers

Fabricated to project specification. 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:

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

Add the Deck Twin "Offshore deck module" component to this project. Run `npx -y https://decktwin.com/cli/deck-twin-0.2.2.tgz add deck-module` (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 deck-module` for its props, ranges and ports. Render <DeckModule /> 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