Point-shaped, annular or area support or anchorage in the surface. The point-shaped intermediate support of the thin membranes presents some difficulties, however, as the stresses generally increase sharply in the vicinity of such a support- according to the size of the bearing area and degree of deformation. A "point-shaped" support, is characterized by the fact that the force is transmitted by an area which is very small in relation to the surface area and thickness of the membrane. In order to avoid extreme stress concentrations, which can be resisted only by additional strengthening of the membranes, the latter are supported by the largest possible bearing areas and curved to relatively gentle rounded shapes, resulting in the typical hump appearance.

All kinds of models of humped surface.
 

Project Illustration: Denver International Airport

The design succeeds in the sensible use of the humped surface. Two rows of masts march down the length of the terminal’s great hall, supporting a long progression of roof units to cover the 900ft length of the space, and provide protective overhangs for the expansive glass walls which surround it. Ridge cables draped over the masts alternate with upward below valley cables. These cables are all that is needed to gather the snow and wind loads from the fabric membrane and transmit them to mast tops and roof anchors.

The fabric roof of the project shines in the night.

Construction started from the north, moving towards the south. Masts were erected first. Then top ring and mast cover assemblies were lifted in place and attached. Valley cables were strung across, and the fabric installed a bay at a time.

Rings and covers had to be erected before installing the fabric.

This picture demonstrates the capacity of the roof to carry snow.

At night, the glitter of lights merges the building’s disparate elements into a giant shining diamond.

Outside link to"Denver International Airport Page"

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