Page 27 - Microsoft Word - 20120528 Unesco study

To use the soil types for the calculations of the model the soil taxonomy is reclassified into four
main groups which will be used for this study:
- Soil type 1: Organic clay.
- Soil type 2: Clay.
- Soil type 3: Sandy clay.
- Soil type 4: Sand.

In table 3.6: The reclassification given.

Acrisols Arenasols Fluvisols Gleysoles Histosols Leptosols Luvisols Vertisols
Taxonomy Cambisols Ferral sols Plinthosols Solonchaks

CH SP GW OL SP OL P GW SC CL OL CH
OH SM GM OH SC OH GP GC CH OH OH
USCS P SW OL P GM CL P
SM OH GC
ML P
Soil Soil Soil Soil Soil Soil Soil Soil Soil Soil Soil Soil
Main group Organic Sand Sand Organic Organic Organic Organic Sand Sandy Clay Organic Organic
type type type type type type type type type type type type
4:
4:
1:
4:
4:
1:
1:
4:
3:
4:
4:
2:
clay
clays
clays
clays
clays
clays
clays
clays

Table 3.6: Reclassification soil types

The most part of the state of Tabasco is covered with (organic) clays. In table 3.7 the standard
physical parameters are given of the 4 main groups of soils. Beside these is the ratio of the soil
occurring in Tabasco.

Surface Bearing capacity
Soil type 2
[km ] [%] [Edyn]
1 Organic clay 18.334 72% 25 N/mm 2
2 Clay 2.615 10% 50 N/mm 2
3 Sandy Clay 1.585 6% 75 N/mm 2
2
4 Sandy soil 3.098 12% 100 N/mm
Total 25.632 72%
Table 3.7: Amounts of soil per soil type

26