The mortar pillar placement was reinforced with indenting a stake on he weak ground, but when the soil was placed on top, the conduit box settled with the placed mortar pillar and the stake. Indentation of 216 steel stake of 1610ton was done to raise and reinforce. The soil on top of the box was removed during the reinforcement to decrease the weight of the reinforcement and placed again afterwards. The surrounding friction of the mortar pillar stake and the box made the reinforcement a hard process.
Settled box restoration