A.±20mm B.±15mm C.±10mm
A.跨中4mm,其他部位6mm B.跨中6mm,其他部位4mm C.跨中4mm
A.新澆砼、傾倒砼 B.新澆砼、振搗砼 C.振搗砼、傾倒砼
A.16mm B.20mm C.25mm
A.±10mm B.±20mm C.±15mm
A.75% B.80% C.設(shè)計強度