N-HOW HOTEL _ Cantilevered building _ Berlin _ Tchoban Voss•Identify a cantilevered structure.•The need for the cantilever ? (design issue) – services, structural requirement, site response, or just visual.•Explain the structural system – flat beam / flat plate / truss, how is the behavior of the cantilever, how does it stay(concept)?
A three-storey block with a mirrored underside juts out from the top of a Berlin hotel, cantilevered about seventy feet andhovering eighty feet above the water..The huge cantilever comprises the upper three floors of the eleven-storey NHow Hotel, which was designed by Germanarchitects NPS Tchoban Voss.The end of the cantilever is fully glazed whilst the underside is clad in polished aluminium, creating a mirror that reflects thehotel roof below. _Introduction to the structure
The structure of the building and the façade designrefer to the situation of the building A hugecantilevered cube cites the motif of a crane cabin,whereas the façade’s surface mingles into theubiquitous brown stone materiality at the formerlyimportant city harbor of Osthafen.
The complex has 2 U-shaped blocks whicheach open toward a terrace on the RiverSpree. The ground floors of both blocks arecompletely built over by a connectingstructure of glass which supports theimpression of an urban planning caesurabetween the blocks.The blocks are also connected with a glazedcatwalk in each of the 7 full storeys aboveground. The upper 3 will protrude furthertoward the River Spree to convey the imageof a “crane house”. _The need for the cantilever
On street level a floor-to-ceilingglass band with large-size panelsdistinguishes the hotel from theneighboring old storehouses. Thefaçade zone above is formed byperforated brick coat withirregularly arranged squarewindows.The chosen bricks vary in color aswell as in their line-up adding avivid optical brigo to the massivevolume by an irregular surface.The fitted top levels (7th to 10thfloor) wear a highly reflectivealuminum cladding and allowsplendid views to the southwestthrough an all-glass doublefaçade. _The study of the cantilever