HasleTre
Architect: Oslotre AS
Location: Oslo, Norway
Type: Office
Year: 2023
Photographs: Einar Aslaksen, Dmitry Tkachenko, Dag Sandveen
The following description is courtesy of the architects. HasleTre, the recipient of Norway’s distinguished Wooden Building of the Year 2022 award, serves as a pioneering model of sustainable architecture, driven by the imperative to combat climate challenges and shape a resilient future. Rooted in environmental consciousness, adaptability, and innovation, HasleTre not only meets functional needs but also slashes greenhouse gas emissions by 60% and secures the coveted BREEAM NOR Excellent certification.
Nestled at the outskirts of Oslo’s central city, HasleTre spans 3000m² over five floors, including basement and roof terraces. The directive was to craft an ecologically conscious, versatile, and inventive commercial structure designed for disassembly and reuse.
The structure boasts a mass timber framework, featuring a flexible 5×5 meter grid system accommodating varied plans like cell offices, open workspaces, meeting areas, and smaller rooms.
Yet, the journey wasn’t without challenges. Navigating the nexus of avant-garde construction techniques, materials, and regulatory compliance demanded meticulous equilibrium. Garnering widespread support for the disassembly and reuse concept necessitated comprehensive communication to elucidate its enduring benefits.
The commitment to disassembly materialized through meticulous component planning that facilitates both future assembly and disassembly. A primary and secondary framework designed around standard production formats and dimensions, coupled with minimal perforations through raw elements, curbs material waste and optimizes transport volumes. Ingenious timber-to-timber connections, such as glulam columns and beams joined with beech dowels, and CLT walls and slabs utilizing X-fix connectors, culminated in a steel-free construction system. This timber-centric approach curtailed steel use by over 80% compared to concrete alternatives, while adaptable technical solutions enhance longevity.
The interior predominantly features exposed wood, cork, and wool elements, with wooden nails used instead of screws for attachment. Harnessing the hygrothermal properties of these organic materials, the building aims to curtail energy consumption, enhance occupant well-being and focus, and mitigate sick leave instances.
The project integrates a substantial proportion of reused and upcycled materials, including ventilation aggregates, acoustic ceiling plates, and secondary room flooring. Moreover, 60% of the furniture constitutes upcycled pieces, while the remaining 40% incorporates biodegradable materials or industrial waste like ocean-harvested plastics.
Designed for durability and spatial-technical flexibility, HasleTre was remarkably erected in a record-setting nine-month span.
Project Details
- Project Name: HasleTre
- Completed Address: Bøkkerveien 2 Municipality Oslo
- Completed: 2023
- Client: Höegh Eiendom
- Contractor: Seltor AS
- Architect: Oslotre AS
- Team Members: Jørgen Tycho, Architect MNAL; Moritz Groba, Dipl. Ing. Architektur; Salas Montes Mañas, Civil Architect; Kristine Karklina, M.Arch; Katrin Wilde-Sampaio, Dipl. Ing. Architektur; Jon Danielsen Aar- hus, Civil Architect MNAL; Olivia Gragnon, CAD Engineer
- Interior Architect: Fixed Furniture (Client side): I-d. Interiørarkitektur & Design as, Silje Brænde, Int. Ark. MA / MNIL and Are Fredrik Berg, Furniture Designer MA / MNIL
- Loose Furniture (Tenant side): Romlaboratori- et AS, Kjersti Hoel Johnson, Interior Architect MNIL and Malin Skjelland Eriksen, Interior Architect MNIL
- Landscape Architect: Grindaker AS, Ingrid Klingberg, Landscape Architect MNLA and Denise Ines Peters, Landscape Architect MNLA
Consultants
- Timber Engineering: Oslotre AS & NyStruktur AS
- Concrete Engineering: Norconsult AS
- Structural Engineering: Sweco AS
- HVAC Engineering: Rambøl AS
- Electrical Engineering: Ekom AS
- Plumbing Engineering: Engenius AS
- Fire Safety Engineering: Multiconsult AS
- Acoustic Engineering: Multiconsult AS
- Fire Engineering: F.M.Haaland As
- Breeam Certification: Multiconsult AS
- Cross-laminated Timber and Glulam Supply: Splitkon AS
- Gross Area: 2655 sqm
- Costs: approx. 106 million NOK excl. VAT (2023)
