A 128,000 stone colums job with 8 rigs PTC SC13.
In the city of São Luís, the capital and largest city of the Brazilian state of Maranhão, 8 PTC SC13 units are working in a soil treatment project requiring 1.300.000 linear meters of stone columns.
This treatment is needed to improve the bearing capacity of a soil that will hold a new railway and the enlargement of a road.
The stone columns will have 8m to 13m depth, and a diameter of 80 cm.
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