Much of the agreement and non-agreement in such papers is due to that many of the comparisons include mistakes and a few sources of such are illustrated and explained. A case of over reliance on blow-count is presented.

The importance of vibration problems induced by pile driving is addressed and guidelines for establishing limiting vibration levels with respect to buildings with different foundation conditions are presented.

Vibratory compaction generates lateral stresses, which result in a permanent increase of the horizontal earth pressure and overconsolidation. The practical importance of these effects is discussed.

The most useful tool for deciding which soils can be dentified by dynamic methods is the cone penetration test. Based on the CPT data, variation of the coefficient of earth pressure in normally consolidated and overconsolidated soil and effect of soil compaction ...