Improvement of Bearing Capacity of Shallow Foundation on Geogrid Reinforced Silty Clay and Sand

Table 5

Ultimate bearing capacities for different tests for two layers under different conditions.

Test no.	Different conditions of two-layer soil	Ultimate bearing capacity (kN/m^2)		Percentage (%) improvement in BC		BCR
		10% BM	TIM	10% BM	TIM	10% BM	TIM
1	Two-layer soil	184.34	141.25	0.00	0.00	1.00	1.00
2	1 geogrid in interface of silty clay soil and sand layer	201.10	153.22	9.00	8.49	1.09	1.08
3	1 geogrid at the sand in two-layer condition	229.83	172.37	24.67	22.03	1.24	1.22
4	1 geogrid in between the sand and 1 geogrid in the junction of two soils	248.98	201.10	35.06	42.37	1.35	1.42
5	1 geogrid in between the sand, 1 in the junction of two soils, and 1 in silty clay soil, respectively	277.71	210.67	50.06	49.15	1.50	1.49
6	1 geogrids in between the sand, 1 in the junction of two soils, 2 in silty clay soil, respectively	296.86	215.46	61.03	61.03	1.61	1.52