Gravel columns in wind farm foundations

Iโ€™ve just received a short technical summary of the works performed in Raki (Chile) from Terratest, the company who has made the gravel columns.

Unfortunately itโ€™s in Spanish, but the pictures are beautiful ๐Ÿ˜‰

About 9000 meters of gravel columns have been put in place. The diameter is 80 cm, while the length changed depending on the position (from 9 to 13 meters).