【Utilities – Civil Engineering Version】20181107
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Basic requirements that must be met for column installation (). A: The centerline of the column should be aligned with the axis of the corresponding column cluster, with an allowable deviation of ±5mm. B: The actual elevation of the top surface of the cap and the top surface of the column should match the designed elevation, with an allowable error of ±(5–8mm). C: When the column height is between 5–10m, the allowable deviation is ±10mm. D: When the column height exceeds 10m, the allowable deviation is 1/1000 of the column height, but it shall not exceed 20mm. E: When the column height is greater than 5m, the allowable deviation is ±8mm; when the column height is ≤5m, the allowable deviation for verticality is ±5mm. Answer: ABCDE
C: When the column height is 5–10 m, it is ±10 mm