Supporting structure for domed roof - is formed by curved steel braced girders with their inner ends fastened to central rings

摘要

The building with a domed roof has a circular wall which supports the outer ends of curved braced steel girders (3). These girders (3) extend radially inwards and upwards and have their inner ends fastened to central rings. - An upper pair of rings (11,12) connect the upper flanges of the girders to each other and a second pair of rings connect the lower part to each other. Each pair of rings consists of two rings of OD. The smaller ring (11) of each pair is fastened to the inner end strut of each girder whilst the larger ring (12) of each pair is fastened to second strut from the inner end of each girder.