Total Building Performance mandate

Building integrity

Will the fabric and systems survive tropical service life?

4/5

Good: buildability was treated as a performance mandate, not just a productivity score.

At Woodlands Hospital

DfMA, prefabricated bathroom units and prefabricated MEP raise factory-controlled quality and reduce wet-trade defects.

Repeated grids and standardised risers make maintenance access legible for facilities teams over decades.

Interview evidence needed: defect-liability trends after handover, and how the as-built model is used in FM.

Computational design support used for this mandate

Design → construction → handover

Federated BIM (Revit + Navisworks)

Single coordination model across architecture, structure and dense healthcare MEP; clash detection and RFI resolution before site.

Fewer on-site clashes in service-heavy ceiling voids; enabled prefabricated MEP to be cut to real dimensions.

Construction

4D sequencing

Linking the model to programme for phased block completion and re-planning after COVID-19 disruption.

Made re-sequencing decisions visible to a very large, multi-party site team.

The trade-off

Standardisation and off-site manufacture raise quality and durability, but they lock decisions early: once a bathroom pod or an MEP rack is in production, late clinical change becomes expensive. The pay-off is factory-grade repeatability across hundreds of rooms.