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The foundations design of continuous casting machines（slab，billet，bloom and round billet.)

1　When determining the subgrade，factors specified in Section 3.2.1 of this Code shall be considered，and the requirements for subgrade bearing capacity，foundation deformation and stability must be satisfied.

2　Depending on the different geological conditions and loads，the supporting layers for foundations shall be selected as follows:

2.1　If continuous casting machines are to be built on natural foundations，medium dense-dense gravel，soil and sand soil，hard plastic clay or rock should be used as the supporting layers.

2.2　Provided that the subgrade bearing capacity and foundation deformation can meet the requirements，the improved subgrade layers may be used as the supporting layers.

2.3　The same rock layers should be used as the supporting layers for the same foundations.In case of piled foundations，the piles should be of the same type，and the same rock layers should be used as the supporting layers of pile tips.If it is impossible to have the same supporting layers because the soil underneath the foundation varies greatly，the soil layers featuring similar geotechnical behavior may be used as the supporting layers provided that they can provide adequate bearing capacity，and the foundation settlements and differential settlements shall allow for normal operation of equipment and process.