this second layer, 6.56-foot (2-m) anchorage lengths were left out. 5. Placement of 16 inches (0.4 m) of fill material in two lifts, paying attention to spread and compact it in the longitudinal direction of the top high-strength geogrid (Figure 7 on page 20). 6. Wrapping the anchorage lengths of the high-strength geogrids at the end of the compaction of the second lift of fill material. 7. Steps 3 to 6 were repeated to install the other two layers of high-strength geogrids. Finally, another 8-inch (0.2-m) lift of fill material was placed and compacted to provide a perfectly flat surface for the construction of the concrete pavement slab. Piled embankments with basal reinforcement Piles and columns are commonly installed to provide support and settlement control by transferring the load through the soft compressible soil layer to a stiffer foundation, when time constraint is a critical aspect, and primary and secondary settlements need to be controlled. Many different types of columns can be used, including stone columns, vibroconcrete columns, deep-mixing method columns, driven piles and auger piles (Collin 2004; Collin et al. 2005). Probably the most critical aspect when designing column-supported structures is that the load must be transferred effectively to the columns to prevent punching of the columns into the soil structure; this FIGURE 6 First layer of geogrid installed directly on soft subgrade in the Port of Guaymas project GEOSYNTHETICS LABORATORY & SPECIALISTS R&D * TESTING * EVALUATION * EXPERTISE * Geomembranes * Geotextiles * Containment * Drainage & filtration * Reinforcement * Slope Stability * Advanced Polymer Characterization * Durability * Extrusion Prototyping * Flame Resistance Page 1 of 1 www.gcttg.com https://forums.scc.ca/forums/scc/dispatch.cgi/scc_dr_as_ap/showFile/100758/d20170608... 2018-11-22 www.GeosyntheticsMagazine.com 19http://www.gcttg.com https://forums.scc.ca/forums/scc/dispatch.cgi/scc_dr_as_ap/showFile/100758/d20170608 http://www.GeosyntheticsMagazine.com