Thanks sliderule,
Water is not a problem. The problem is, when compacting the fill material in layer of 60cm thick, the material sink down even if we add more rock material. In this case, we cannot achieve the required compaction density of 95%. In other words, the ground beneath the fill...
Thanks a lot Ron,
So no need of rock fill as recommended by Geo-Tech Engr?He is requiring us to place rock fill with sizes range from 2" - 6", up to the level of 1.0m from the soft ground level and then place a blind concrete of 150mm thick.Please clarify further on this point.
Our foundation is designed to be Mat Footing. Per Soil Test Report, water table is found at elev -1.8m with sandy material. The Geo-Tech Engineer recommends to backfill rock material to a depth of 1.0m. As backfilling is progressing up to a depth of 60cm, compaction was started per direction of...