Except that the Hancock is almost 100% rationalist.
Office uses demand larger floorplates than residential - you can be far from a window in an office, but in a condo unit it would suck hugely. Parking wants even bigger floorplates, because with a given number of spaces, bigger floorplates means fewer levels and fewer ramps to drive up. The mixed-use proforma for the building wants three differently-sized floorplates.
The most logical form here is a tower with two setbacks at the transition from parking to office and office to residential. But setbacks are odd (who gets to use the roof space?) and sometimes require costly transfer floors. A tapering form/frustum solved the problem, just like it did at First National/Chase Plaza. I've also heard that the taper reduced problems with wind loading at the uppermost levels.
__________________
la forme d'une ville change plus vite, hélas! que le coeur d'un mortel...
Last edited by ardecila; Apr 22, 2015 at 3:15 AM.
|