The primary and secondary keels are straight: the primary and secondary keels are required to be straight, and the arching height is not less than 1/200 of the short span of the room; When large-scale suspended ceiling is planted, one large transverse keel shall be welded on the main keel every 12M.

Keel correction: comprehensively correct the position and levelness of the main and secondary keels; The connecting parts should be installed in dislocation; After correction, tighten the hanging parts and connecting parts where the keel is located.

Stability of partition wall: the top and bottom shall be used along the top keel and the ground keel; Vertical keel shall be provided, and reinforced keel shall be provided at the door frame; Horizontal keel shall be provided with transverse support.

The fixed point is strong: the fixed point around the roof must be strong, the gap between the two should not be too large, and the direction of the keel should be vertical.

Ensuring that the correct installation method and precautions are followed is essential to avoid problems such as cracks and unevenness in the later period.