Strøm Gundersen AS has built the new office building Portalen for the client Union Eiendomsutvikling AS.

The new building consists of 7,720 square meters spread over seven office floors and a basement, and was completed in May 2021.

Jotne Ankers has provided for this project:

- Internal straight stair (main stair) of steel

- Internal spiral staircase of steel

- Spiral staircase with glass railings

- Outside straight stair (escape stair) of steel