MonoAxial GeoGrids

HG Silos will be constructing 12 units of 1500 metric tons of grain silos in Talavera, Nueva Ecija. Based on the soil investigation report, the soil is underlain by five to six meters of silty sand having a standard penetration test (SPT) - N value range of six to ten. It is recommended that an allowable bearing capacity of 175 kPa should the soil obtain for it to be able to carry all the loads induced by the grain silos. For tank farm facilities situated on soft soils, the solution of the geogrid reinforced foundation is often used to address the low bearing capacity. Geogrids address the issue of low bearing capacity by increasing their load-carrying capacity. HG Silos sought a recommendation to Maccaferri Philippines to increase the capacity of the soil.

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A 12 000m² warehouse for storage of thousands of tons of soya had to be built on of low bearing, silty, fine hydraulic fills which are up to 4m in depth at the Durban Harbour area. These hydraulic fills are underlain by silty sand horizons which are interspersed by sandy clay and sandy clayey silts, which vary from 2m to about 20m in thickness. Calcareous sandstone, soft shale and siltstones were also found at depths of between 25-27m below ground. The water table was at 1. 6m below natural ground. The client needed the structure to be finished as quickly as possible. The challenge was to provide a suitable foundation to carry such huge loads, on such poor founding conditions, in the quickest time.

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Embung Aji Raden was planned to be constructed above soft soil. The existence of soft soil has the potential to cause non-uniform settlement, and if not prevented immediately will cause long-term problems in the stability of the embankment above. Thus, basal reinforcement is needed below the embankment to distribute embankment load to the soil and to reduce differential settlement potential.

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