Portfolio

4D BIM Construction Sequencing Model

Time-linked 3D BIM model for MRT tunnel construction — animating the full construction sequence from TBM launch shaft excavation through tunnel boring drive operations, enabling programme visualisation, schedule risk identification, and stakeholder communication.
Beyond+

What is 4D BIM ?

3D

Geometry Model
Programmed Schedule

4D

Time-linked simulation of construction activities — every model element linked to a programme task, enabling visual playback of the build sequence.

Project Details

Project Reference
MRT Tunnel — 4D BIM Construction Sequencing Model
Client / Owner
Land Transport Authority (LTA), Singapore
Project Type
MRT Tunnel Construction — TBM Launch Shaft & Drive
Main Contractor
Confidential
BIM Dimension
4D — Time-linked Construction Sequencing
Key Activities
Launch Shaft RC Works · TSA Shaft Wall · TBM 2nd Drive
4D Software
Autodesk Navisworks Manage — TimeLiner Module
Programme Link
Gantt Programme (P6 / MS Project) linked to BIM model
Project Status
Completed — FM Model Handed Over
Shaft rebar BIM model showing a conveyor system with support structures and machinery under a blue sky.
Fig. 1

4D Construction Sequence — Key Phases

Phase 1
Launch Shaft Preparation
Excavation, sheet piling, and temporary strutting arrangement (TSA) installation
Phase 2
Launch Shaft RC Works
Reinforced concrete shaft base, walls, and structural lining construction
Phase 3
TSA Shaft Wall Construction
Middle waler installation and east shaft wall construction to TSA specification
Phase 4
TBM Assembly & Launch
TBM component lowering, assembly in launch shaft, and ground-breaking launch
Phase 5
TBM 2nd Drive
TBM boring from FB Shaft to CR117 — 1,438 m continuous drive with segment ring erection
Phase 6
Tail Grouting & Handover
Annular grouting, convergence monitoring, and tunnel as-built verification

Scope Of Work

4D BIM model setup — linking Revit/Navisworks 3D lements to construction programme tasks in Navisworks TimeLiner
Construction programme import — P6 / MS Project Gantt chart tasks imported and mapped to BIM model objects
TBM launch shaft sequence animation — excavation, RC works, and TSA shaft wall construction phases visualised
TBM 2nd Drive simulation — 1,438 m boring sequence from FB Shaft to CR117 animated with segment ring appearance
Colour-coded task state display: Not Started (grey) / In Progress (green) / Completed (yellow) / Early/Late (red)
Charts on a whiteboard, including a bar graph and pie charts, possibly related to 4D BIM construction sequencing.
4D BIM construction sequencing model showing a complex, detailed architectural plan with annotations.
Programme logic review — clash between construction tasks and physical sequence identified through 4D visualisation
Temporary works simulation — temporary strutting arrangement (TSA) installation and removal sequence modelled
Critical path visualisation — critical activities highlighted in the 4D simulation for programme risk awareness
Stakeholder review simulation exports — 4D animation video rendered for client, design team, and public communication
As-built sequence recording — 4D model updated against actual progress for forensic programme analysis

Key Deliverables

4D BIM model (Navisworks NWD) — 3D model fully linked to construction programme with TimeLiner tasks
4D animation video — construction sequence rendered as MP4 for stakeholder review and public communication
Programme task mapping schedule — listing all BIM objects linked to programme activities
Construction sequence report — written narrative of phased construction activities with 4D screenshots
Programme risk register — schedule conflicts and sequence clashes identified through 4D review
As-built 4D model update — model updated to reflect actual construction progress vs. planned sequence

Why This Matters

Visual Programme

Anyone can understand the construction sequence — not just engineers. 4D animation communicates the plan to clients, regulators, and the public without reading a Gantt chart.

Sequence Conflict Detection

Spatial clashes between concurrent construction activities found in the model — before they cause delays on site.
4D BIM construction sequencing model showing a detailed AutoCAD Civil 3D plan.
4D BIM construction sequence blueprint with a laptop.

TBM Drive Simulation

Full 1,438 m TBM drive animated ring by ring — allowing the team to review and optimise the tunnelling sequence before boring begins.

LTA BIM Compliant

4D BIM delivered to LTA BIM standards — ready for Design Review, construction methodology approval, and regulatory submissions.

Tools & Standards

4D Software
Autodesk Navisworks Manage — TimeLiner Module
BIM Authoring
Autodesk Revit (Civil + Structural Worksets)
Programme Import
Primavera P6 / Microsoft Project (MPP) Gantt integration
Animation Export
AVI / MP4 video export from Navisworks Animator
Standards
LTA BIM Standards, LTA TBM Tunnelling Specification, ISO 19650
Documentation
4D screenshots, sequence reports, programme mapping schedule

Legal Notice & Confidendiality Statement

This portfolio page is published for marketing and capability demonstration purposes only. All images, model views, programme data, and technical descriptions are used with the knowledge of the project owner and do not disclose any proprietary, confidential, or For-Construction (IFC) design or programme information. Construction chainage references and task names shown are representative of scope — no exact alignment coordinates, tender programme data, or commercially sensitive scheduling information are disclosed. The identity of the Main Contractor has been withheld in
accordance with contractual confidentiality obligations. Published content complies with Singapore’s Copyright Act 2021, the Personal Data Protection Act (PDPA), and applicable non-disclosure provisions. Beyond+ Pte Ltd retains all intellectual property rights over BIM deliverables produced under this engagement.

Need 4D BIM for your next construction project?

Contact Beyond+ Pte Ltd — Singapore’s trusted BIM specialist for 4D construction sequencing, TBM tunnel simulation, and programme visualisation.