Posted by d on January 10, 2002 at 09:05:11:In Reply to: Re: SurePlate steel building connections WTC?? posted by Paul Malo on January 10, 2002 at 06:13:57:
One of the nagging features of the structure is this often repeated statement: "..the central core carried only gravity loads, the tube carried only wind loads..." or words to that effect.
If this were true, the outer tube would have been effectively a separate structure, a caisson essentially; the inner structure was then self-supporting with floor trusses cantilevered out from the core.
Of course this is unlikely; with sixty-foot spans, the trusses must somehow rest on supports at the outer columns to some extent.
But it strikes me that a sixty-foot. light-weight steel truss only a yard deep loaded down with even the lightest aerated concrete would experience some downward deflection, which might have been partly compensated by the relatively rigid lower chord VED connections.
Or not?
|
ArchitectureWeek
Search
Buildings
Architects
Types
Places
Pix
Free 3D Models
Store
Library
|