Resurvey the column axis and elevation line, and mark out the column form line, 1:2 cement mortar will be used to leveling at the column bottom.

• 将柱轴线、标高线复测投点，弹出柱支模线，将柱脚支模处用1:2水泥砂浆找平，每根柱周围搭设井字架，在井字架上抄测标高控制线。