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A. 单栋高层建筑勘探点的布置，应满足对地基均匀性评价的要求，且不应少于6个
B. 对密集的高层建筑群，勘探点可适当减少，但每栋建筑物至少应有1个控制性勘探点
C. 勘探孔深度应能控制地基主要受力层，当基础底面宽度不大于5m时，勘探孔的深度对条形基础不应小于基础底面宽度的3倍，对单独柱基不应小于1.5倍，且不应小于5m
D. 对高层建筑和需作变形计算的地基，控制性勘探孔的深度应超过地基变形计算深度1倍
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