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3D connection library
Portal frames
Crane girders
7.1
Crane girder bracket (corbel)
牛腿轴测
右视图
牛腿大样
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Erection order (3 steps)
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1. 钢柱与柱内水平加劲板
2. 焊牛腿腹板和横向加劲板
3. 焊牛腿顶面板