4D sequencing & phased delivery

Why it matters

A programme on paper cannot show whether a construction phase works spatially. Only when the coordinated model is linked to the construction programme (4D) does it become visible where trades get in each other's way, where installation and logistics space is missing and which sequence is genuinely buildable. On existing facilities that keep operating through construction (the reality of many pharmaceutical and industrial projects), phasing determines whether production and qualified areas stay protected. Tie-ins and shutdown windows are planned together with the operator instead of improvised on site. The result: fewer programme surprises and a schedule every party can trust.

How we work

We link the coordinated model (IFC) to the programme activities in Navisworks and develop a 4D simulation of the construction sequence from it. Critical sequences, site logistics and installation steps are rehearsed in the model before they happen on site. On facilities that keep operating, we plan tie-in and shutdown windows together with the operator and align construction phases with production and use.

1. Align programme structure and model breakdown (phases, zones, trades)
2. Link the coordinated model (IFC) to programme activities in Navisworks
3. Build the 4D simulation of the construction sequence and identify critical sequences
4. Rehearse construction phases and site logistics with site management and the design team, and adjust
5. Plan tie-in and shutdown windows together with the operator
6. Prepare visual sequences for client and site meetings
7. Keep the 4D model current as the programme changes