foundation system of burj al arab

Merits and Demerits of Black cotton soil

Merits:   The enrich agro-friendly contents make black cotton soil fertile. These soils are highly moisture-retentive, thus responding well to irrigation. These are enriched with calcium carbonate, magnesium, potash and lime which are all nutrients. Poor phosphoric contents renders rich  production of corps like cotton. The iron-rich granular structure makes them resistant to wind and water. Fertility, erosion resistance, and properties of retaining moisture in their grain are the most useful condition for better crops growth. So these soils are the best option for farmers who like to produce plenty of crops.   
Merits and Demerits of Black cotton soil
shrinkage cracks in black cotton soilDemerits:   These soil contains fine clay particles. This property  induces a great affinity to water of such type of soil. Alternate swelling and shrinkage in extensive limit during wet and dry process respectively results cracks in soil without any warning. 

These cracks may sometimes extent to severe limit like ½” wide and 12” deep. So building to be founded on this soil may suffer severe damage with the change of  atmospheric conditions.

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