An approximate cone roof steel structure was formed by rafters on girders and columns .This roof supported structure has been used in large diameter atmosphere tank .

 
  • 置于橫梁和立柱上的斜椽構成了形狀近似正圓錐形表面的錐形頂鋼結構,該結構逐漸成為常壓大直徑儲罐罐頂支承的首選。
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