Offices and Public Buildings


Offices & Public Buildings

Impact and airborne sound insulation

The system offers flexible line routing between subfloors and floor coverings entailing major benefits, while the Granab system also creates a good acoustic environment. Granab systems full the acoustic requirements for offices in accordance BS 8233:2014 Guidance on sound insulation and noise reduction for buildings.


Building Regulations

The Building Regulations approved document Part E does not include requirements for acoustic performance of commercial buildings.


Granab for schools


Pleasant, nurse comfort-adapted floors for a better working environment

In a good working environment, it is important that floors are not hard or rigid as this can lead to pain in the shoulders, back and legs. Granab systems, with their integrated impact-dampening effect, provide comfortable floors with a documented degree of deflection for point loads.

Wall partition build straight on top of the granab System

Office floor
Granab subfloor system 7000N, including 22mm chipboard and 15mm parquet. lightweight wall erected continuously on Granab system including surface layer.


Measurement results

Impact sound: Lnw 59 dB

Airborne sound: Rw 56 dB


Exampleplanning electrical, datacom, telecom – offices

System description – electrical.
Granab sub?oor systems permit the distribution of supply systems for power, telecom, datacom, etc. Premises larger than 1000-2000m2 are divided into supply zones.

Spaces – central units.
The supply zone is equipped with a fixed unit (a so-called island with toilets etc.) where central units for power, telecom, datacom, fire alarms etc. are placed.

Canalisation – line routes.
The cable networks are run on cable trays or baskets under the floor along a primary route from the central units and on to the supply zone. The floor is equipped with access hatches over the route. From the primary route, the cables are run in installation conduits to the equipment locations (outlets).

Granab-Office-floor-section Granab-Office-floor-design