'crossover' by NL architects
all images courtesy NL architects


construction has just begun on 'crossover', a project by dutch firm NL architects in utrecht, the netherlands.
the idea was to design a music building with 4 halls on top of the existing concert hall vredenburg -
bringing together totally different target groups in one building. in addition to the symphony hall,
the complex will feature a 2000 person hall dedicated to pop music, a jazz hall, a room for chamber music
and the so called crossoverzaal.



interior



interior



interior



interior



interior

diagram of crossover



the music building - 'crossover' programs

the 'biotopes' will be developed by 4 different architects within the masterplan by herman hertzberger/architectuurstudio HH.




the crossoverzaal will serve as an independent hall that can be used for a wide range of performances.
but it can also function as a 'safety valve'; when other rooms lack capacity for certain events.

the biotope includes a spacious foyer and a flexible hall with a flat floor. it doesn't have a fixed stage
or fixed seating. the basic configuration holds 400 seats, but can contain up to 600 people.




the hall itself is a box. balconies and 'loggias' are connected to it in an irregular way, bulging out
of the main volume.



section view



section view


sections of the building

the starting point is the box in a box principle. the acoustic cavity in between the the inner
and outer layer is locally enlarged to fit the buildings infrastructure and additional program.



each of the levels built within each other...






























section view