1. Measure the mark corresponding to the cross center line of the bolt group on the column base gluten after the binding, and locate the cross center line of the bolt group on the corresponding positioning steel plate of the bolt group.
2. Place the positioning steel plate on the root gluten, align the cross wire of the positioning steel plate with the cross wire mark on the gluten, align and level, and start fixing.
3. Insert the anchor bolts into the bolt holes of the positioning steel plate, start fixing the upper part of the screw with a nut, and check the alignment, and adjust all the tops of the bolts to the planned elevation.
4. After the central axis and the standard have passed the high-efficiency inspection, use the 12mm diameter steel bar to weld the bottom main reinforcement and the positioning steel plate. And grease the threaded part of the bolt, wrap it with greased paper, and add a sleeve for maintenance.