Building Services for a Biosafety Level 3 Laboratory: 16,800 m² Under Containment Rules

In most buildings, the ventilation system serves the occupants. In a containment laboratory, it is a safety barrier. Air is required to move in one direction, from clean areas toward areas of higher containment and never the reverse, and that directional requirement propagates into pressure regimes, room sealing, filtration, redundancy, and every penetration through a wall or slab. It also has to hold while the building is being maintained.

TEBIN delivered the mechanical, electrical, and plumbing design for a six-storey, 16,800 m² laboratory building in Germany classified at Biosafety Level 3 (BSL-3), combining approximately 60% laboratory space with 40% office and general areas. The scope covered HVAC (heating, ventilation, and air conditioning), water supply, sewerage, sprinklers, laboratory gases, electrical systems, fire detection, and security, each designed to the applicable biosafety requirements.

What does Biosafety Level 3 change for building services?

BSL-3 is a containment classification applied to work with agents that can cause serious disease through inhalation. For the building, the consequence is that ordinary services become regulated systems: ventilation must maintain directional airflow and defined pressure relationships, exhaust requires appropriate filtration and discharge arrangements, drainage from containment areas cannot be treated as ordinary sewerage, and penetrations must preserve the integrity of the containment envelope.

The design consequence is that services cannot be routed and then justified. Containment fixes the constraints first, and the routing has to be found inside them.

How do laboratory and office areas share one building?

The 60/40 split is the central spatial problem. Two-fifths of the building follows ordinary occupied-building logic: comfort conditions, daylight, flexible layouts. Three-fifths follows containment logic, where the same freedoms are constraints. They share a structure, a façade, vertical circulation, and service risers.

The boundary between them is not a line on a plan; it is a set of engineered transitions, and each one is a place where the containment strategy is either maintained or compromised. Designing the two zones as one coordinated services scheme, rather than as a laboratory with offices attached, is what keeps those transitions deliberate.

Why do laboratory gases need their own design discipline?

Laboratory gas systems carry their own hazard profile: pressurized distribution, purity requirements, dedicated isolation and alarm provisions, and interfaces with both the ventilation strategy and the fire strategy. They are designed as a system in their own right, coordinated against the other services rather than accommodated within them.

What were the BIM templates for?

TEBIN developed Building Information Modelling (BIM) templates to structure project management and interdisciplinary coordination on the project. On a building where multiple services disciplines all interact with the same containment requirements, consistent modelling conventions are what allow interfaces to be checked systematically rather than discovered individually.

Project outcome

TEBIN delivered a coordinated MEP design for a BSL-3 laboratory building, covering HVAC, water, sewerage, sprinklers, laboratory gases, electrical, fire detection, and security, developed to the applicable biosafety requirements and supported by BIM templates for interdisciplinary coordination. Certification, commissioning, and validation of containment performance remain the responsibility of the parties holding those scopes.