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5.3 Quality Inspection
5.3.1 For the brick chimney shell，every height of 10m shall be defined as one inspection batch.
5.3.2 The quality standard and the inspection method for the brick chimney shell shall be in accordance with Table 5.3.2.
Table 5.3.2 The quality standard and the inspection method for the brick chimney shell
Table 5.3.2（Continued）
Notes:1 The value of the permitted verticality deviation of the shell center axis means the permitted deviationat the different elevationof one chimney.
2 The mean is calculated by the interpolation method.