In succession to the former model experiment, a field experiment of bending of prototype batter piles due to ground settlement were performed. Four instrumented steel pipe piles (diameter 50 cm, length 39m), two of which were asphalt coasted, were driven as batter piles whose inclination was 15°in a test site where soft clay was layered about 30 m deep and consolidating owing to the load embankment.Stress induced in the piles by the ground settlement and other items were measured through one year, and the behavior of the piles and the influence of asphalt coating were investigated.
　The followings and others were made clear: - The bending behavior of a batter pile due to ground settlement can be accurately analized by the authors' method. Although asphalt coating for batter piles is as effective against negative skin friction as that for vertical piles, it is rather disadvantageous concerning bending of a batter pile.
　Accompanying this experiment, detailed ground investigation including measurement of pore water pressure and lateral load tests of the same batter piles were carried out.