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["工程等级","结构类别","工程范围"]
["1级","网架、网壳","1、网架最小边跨度≥60m，且面积≥5000㎡"]
[null,null,"2、总建筑面积≥15000㎡"]
[null,null,"3、双层网壳最小跨度≥60m"]
[null,null,"4、单层网壳最小跨度≥20m"]
[null,"单层刚架、排架，多层框架等","1、单层刚架单跨跨度≥30m，且面积≥10000㎡"]
[null,null,"2、总建筑面积≥15000㎡"]
[null,null,"3、排架吊车≥20t"]
[null,null,"4、多层框架层数≤12层，且≥6层"]
[null,"  平面/空间桁架","单跨跨度≥30m"]
["2级","网架、网壳","1、网架最小边跨度<60m"]
[null,null,"2、双层网壳最小跨度<60m"]
[null,null,"3、单层网壳最小跨度<20m"]
[null,"单层刚架、排架，多层框架等","1、单层刚架单跨跨度<30m"]
[null,null,"2、排架吊车﹤20t"]
[null,null,"3、多层框架层数<6层"]
[null,"平面/空间桁架","单跨跨度<30m"]
[null,"冷弯薄壁型钢龙骨体系房屋","层数≤3层"]
[null,"活动组合房屋","层数≤3层"]
[null,"索膜结构"]
[null,"压型拱板","单跨跨度≤30m"]

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