When fill earth subgrade exercise part by part. The former part's gradient should be less than 1:5. Slope surface must be flat, so that, the construction machine can move from top to bottom.
填土路基分段作业时，先施工路段端部必须留不陡于1：5的坡面，坡面必须整平压实，以便施工机械上下及下段路基施工时开台阶。
Taking macroarea filled soil on alluvial flat after compaction as subgrade for building is very few.
在这样的场地上，大面积新填土，碾压后修建建筑物，还是很少见的。
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