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某厂房由单层排架及６层框架结构组成。排架部分高２４ｍ ,跨度２１ｍ ,有吊车 ,带天窗 ;框架部分跨度６ｍ ,高２４ｍ ,并与单层排架结构相接。地质条件为 :从地表往下６ｍ范围内为粘土及粉质粘土 ,地基承载力为１４０ｋＰａ ,６ｍ以下为中砂层 ,层厚不等 ,能满足设计要求 ,地?
A plant consists of a single-tier frame and six-tier frame structure. Beam part of the high 24m, span 21m, a crane, with skylights; part of the framework of the span of 6m, 24m high, and with single-layer rack structure phase. Geological conditions are as follows: clay and silty clay within the range of 6m from the ground surface, the foundation bearing capacity of 140kPa, 6m below the sand layer, the thickness varies, to meet the design requirements, to?