一、桩基宜选择压缩性较低粘性土、粉性土、中密或密实的砂土作为持力层；
二、桩端全断面进入粘性土层或中密砂土深度不宜小于0.5m，同时也不宜小于桩的一倍边长或直径。持力层下有软弱下卧层时，其桩端下持力层应有足够的厚度。
以上内容均根据学员实际工作中遇到的问题整理而成，供参考，如有问题请及时沟通、指正。
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