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【多选题】
下列有关砼小型空心砌块砌体房屋芯柱说法正确的是( )。A.
芯柱截面不宜小于120mm×120mm
B.
芯柱所用混凝土强度等级不应低于C15
C.
芯柱的竖向插筋应贯通墙身
D.
芯柱应深入室内地面下500mm
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