Image source: obtained from publicly available online sources.
TOTAL BUILDING PERFORMANCE AND DIAGNOSTICS
Building resilience for long-term operational and environmental performance
| Building Integrity Indicators | Value |
|---|---|
| Gross Floor Area | 244,000 m² |
| Concrete Usage Index (CUI) | 0.45 |
| Green Plot Ratio | 3.85 |
| RCA Used | 6,457 t |
| WCS Used | 5,166 t |
| Recycled Materials Total | 11,623 t |
| Glass U-Value | 1.56 W/m²K |
| Shading Coefficient | 0.27 |
| Basement Levels | 4 |
Data source: MOH Holdings Pte Ltd, Healthcare Infrastructure Projects Division (HIPD).
Woodlands Hospital was designed to deliver long-term resilience, adaptability and operational reliability within a complex healthcare environment. Spanning approximately 244,000 m², the campus integrates robust building systems, four basement levels and future-ready infrastructure to support continuous healthcare operations.
Building integrity is strengthened through the adoption of Building Information Modelling (BIM), high-quality Green Label-certified materials and flexible steel-drywall construction systems that allow clinical and administrative spaces to be reconfigured as healthcare needs evolve. Extensive use of recycled construction materials, including 6,457 tonnes of Recycled Concrete Aggregate (RCA) and 5,166 tonnes of Washed Copper Slag (WCS), supports sustainable construction without compromising structural performance.
The campus achieved a Concrete Usage Index (CUI) of 0.45, demonstrating efficient structural design and responsible resource utilisation. High-performance building envelope systems, including laminated low-emissivity double-glazed facades and a double-wall façade at the Long-Term Care Tower, further enhance durability, occupant comfort and environmental performance.
Together with low-VOC interior finishes, pneumatic waste collection, siphonic drainage and other resilient infrastructure systems, these features ensure Woodlands Health Campus remains adaptable, maintainable and operationally robust throughout its lifecycle.
Our assessment: the adaptability (steel/drywall), recycled material tonnage and CUI 0.45 are the three most valuable additions for a TBPD Building Integrity section. These are stronger Building Integrity indicators than Green Plot Ratio or passive cooling, which belong more appropriately under Sustainability or Thermal Performance.
The steel and drywall construction approach is a strong building integrity indicator. It provides long-term adaptability and space flexibility, allowing easily reconfigure room layouts (e.g., clinical spaces, consultation rooms and office interiors) in the future with minimal structural intervention. This enables the hospital to respond efficiently to evolving healthcare needs and operational requirements.
Green cement and recycled materials are used for concrete production of the main building elements and internal panels.
| Recycled Construction Materials | Quantity (t) |
|---|---|
| Recycled Concrete Aggregate (RCA) | 6,457 |
| Washed Copper Slag (WCS) | 5,166 |
| Total Recycled Materials | 11,623 |
Data source: obtained from publicly available online sources.
The project achieved a Concrete Usage Index (CUI) of 0.45, reflecting an efficient structural design that minimises material consumption while maintaining structural integrity and durability. A lower CUI indicates responsible resource use and optimised structural performance — both central to long-term building resilience.
What the CUI measures
CUI = volume of concrete used in the building (m³) ÷ constructed floor area (m²). It is expressed in m³/m² and counts the concrete in the superstructure: slabs, beams, columns and walls.
| CUI (m³/m²) | Meaning |
|---|---|
| Above 0.70 | Concrete-heavy design; typical of conventional cast-in-place frames. |
| 0.50 to 0.70 | Moderate; the range in which Green Mark begins to award points for concrete reduction. |
| Below 0.50 | Efficient; lean structure, often using steel, precast or post-tensioned elements. Woodlands Hospital: 0.45. |
Lower is better: less concrete per square metre means less embodied carbon and less material use. Bands are indicative, based on BCA Green Mark guidance on concrete usage.
High-performance laminated, low-emissivity and double-glazed facade systems were specified across the campus. The glass is either clear or grey colour with a U-value of 1.56 W/m²K, a Shading Coefficient of 0.27, light transmission of 40% and light reflectance of 33% , which minimises heat transfer, improves occupant comfort and enhances long-term durability.
Low-VOC paints, adhesives and interior finishes were specified throughout the campus to improve indoor environmental quality and protect vulnerable patient groups, including infants, elderly patients and immunocompromised occupants. By reducing harmful emissions at source, these material choices support healthier indoor conditions and align with the campus's broader patient-centred care objectives. The corresponding Green Mark criterion, which requires certification by an approved local body across at least 90 percent of applicable areas, scored zero in the as-built submission of July 2023, so the specification is documented while the certification threshold was not met.
Also read
Material strength
Structural concrete and steel are designed to the Singapore-adopted Eurocodes (SS EN 1992 and SS EN 1993). Recycled aggregate and copper slag are permitted only within BCA limits, so strength is not traded for recycled content.
| Space Type | Typical Imposed Load (kN/m²) |
|---|---|
| Patient Wards | 3.0 - 4.0 |
| Consultation Rooms | 3.0 - 4.0 |
| Waiting Areas | 4.0 - 5.0 |
| Corridors | 4.0 - 5.0 |
| Dining Areas / Food Courts | 4.0 - 5.0 |
| Plant Rooms | 7.5 - 15.0+ |
A benchmark imposed load of 4.0-5.0 kN/m² may be considered representative for hospital public spaces such as corridors, waiting areas, and dining facilities, while ward and consultation areas are typically designed for approximately 3.0-4.0 kN/m².
Fire code
As a large integrated healthcare campus comprising acute, community and long-term care facilities, Woodlands Hospital is designed in accordance with Singapore's SCDF Fire Code and healthcare fire safety requirements. The campus consists of multiple interconnected building blocks and care environments, requiring fire compartmentation, protected escape routes, fire detection and alarm systems and automatic fire suppression systems to support safe evacuation and defend-in-place strategies commonly adopted in healthcare facilities. The integrated campus planning also supports operational continuity and patient safety through clear circulation routes and separation of functional zones.
Fire and smoke safety at Woodlands Hospital relies on a combination of passive and active protection measures, adopted combination of prescriptive-based and performance-based design between wards and communal space. The multi-block campus layout, compartmentalised clinical areas and protected circulation routes help limit fire and smoke spread between healthcare functions. Smoke management strategies, as required under the SCDF Fire Code, are intended to maintain tenable conditions along escape routes and critical areas during an emergency. Given the healthcare setting, fire safety design prioritises patient protection, staff-assisted evacuation and continuity of critical medical operations.
Project-specific concrete grades, steel grades and fire-resistance ratings were not available to this study.