![](https://www.iaa-architecten.nl/img/1953/B1280X0/Cruquius5-DSC03208-1400.jpg)
New construction Cruquius 2.2 Sigma nearing completion
The new construction on the Sigma site at Cruquius in Amsterdam is nearing completion. The design by IAA Architecten i.c.w. Abels & Partners for Koopmans Bouwgroep and Amvest consists of 34 owner-occupied dwellings, 43 rented dwellings, commercial spaces and a parking garage. Revitalisation of existing iconic buildings combined with new construction is creating a special place in Amsterdam.
![Spirals](https://www.iaa-architecten.nl/img/1955/B1400X1400/Cruquius7-IMG_2979-1400.jpg)
![Escape stairs](https://www.iaa-architecten.nl/img/1954/B1400X1400/Cruquius8-DSC03169-1400.jpg)
BIM = CUSTOMISATION
Special attention should be payed to the stunning execution of the escape stairs in the new construction: without a design in BIM, this would not have been possible! The prefabricated spiral-shaped stairs were cast in one piece and fitted precisely into the emergency stairwell.
![Bird's eye view](https://www.iaa-architecten.nl/img/1956/B1400X1400/Cruquius1-DSC03186-1400.jpg)
![Looking up](https://www.iaa-architecten.nl/img/1957/B1400X1400/Cruquius2-DSC03159-1400.jpg)
![Construction1](https://www.iaa-architecten.nl/img/1958/B1400X1400/Cruquius3-DSC03192-1400.jpg)
![Construction2](https://www.iaa-architecten.nl/img/1959/B1400X1400/Cruquius4-DSC03194-1400.jpg)
Construction on top of the former paint factory
A steel skeleton was built on the roof of the former paint factory for the two new residential floors. It is a sturdy structure that blends seamlessly with the original building in terms of design.