4D Planning links a project schedule (time) to a 3D model (geometry), creating a visual simulation of construction sequences. It helps teams better understand the build process, identify risks early, and communicate clearly with all stakeholders.

4D Planning reduces uncertainty by showing how the construction will unfold over time. It supports early risk detection, improves coordination between trades, and provides a powerful tool for client engagement, planning approvals, and site logistics.

To begin, we typically need: A 3D model (e.g., from Revit, Rhino, Tekla, ArchiCAD, or IFC format). A construction schedule (from Primavera P6, Asta Powerproject, MS Project, or similar). Key project milestones and sequencing information. From there, we align your programme with the model and start building the 4D simulation.

Not always. While BIM models make integration smoother, we can also use simplified geometry or massing models to represent key elements of the build. The level of detail depends on your project’s goals—sometimes simple is more effective.

A draft programme is fine as a starting point. 4D Planning can actually help refine your schedule by testing assumptions visually. The more accurate the programme, the more reliable the simulation will be.

By visualising the programme, stakeholders can see when and where activities overlap, understand crane and logistics strategies, and assess the impact of design changes before work begins onsite. It creates a “common language” between planners, designers, and delivery teams.

Yes. 4D is not just for preconstruction—updating the model and programme throughout delivery provides real-time progress tracking, issue resolution, and powerful evidence for project reporting.

It depends on project scale and detail. A simple 4D simulation can be prepared in days, while a detailed, fully coordinated 4D model for a large project may take weeks. We’ll scope timelines clearly before starting.

Any project with complex sequencing, logistics, or stakeholder engagement needs can benefit—from high-rise construction and infrastructure schemes to fit-outs, refurbishments, and manufacturing facilities.

Traditional planning relies on written programmes and Gantt charts, which can be difficult to interpret. 4D combines time with 3D models, showing exactly how the project will be built, step by step, in a visual format.

The main pitfalls are not updating the model, poor data integration, and lack of team engagement. We avoid this by keeping models live, aligning programme and design, and running collaborative workshops.

The spine of our process is underpinned by SYNCHRO 4D, provided by Bentley Systems. We wrap various other softwares and processes around this depending on the specific project requirements.