Prefabricated building steel structure livestock shed/poultry house/chicken shed

The welding quality problems of prefabricated building steel structure livestock shed/poultry house/chicken shed steel structure engineering mainly exist in manual welding seams. These problems include excessive growth of welding seams, slag inclusion, porosity, incomplete penetration, undercutting, edge errors, large deviation of welding seam size, no arc ignition plate, uncorrected welding seam deformation, and unclean splashes. In response to this situation, the supervising engineer needs to complete the following tasks:

Check the factory quality certificate of welding materials; Check the welder's work certificate; Supervise and promote the required welding process tests; Increase inspections during the welding process and supervise the implementation of various technical measures; Strictly visually inspect the quality of welds and measure the actual dimensions of welds; Supervise and promote non-destructive testing.

Good strength bolt connection engineering: Good strength bolt connection engineering is also one of the important sub projects in engineering and one of the weak links in current construction quality, mainly manifested in:

(1) Good strength bolts are secondary filled (using ordinary refined bolts instead of good strength bolts);

(2) The surface treatment of bolt connections with good strength does not meet the specification requirements, including surface treatment, smoothness, and quality of bolt holes;

(3) The tightening of bolts with good strength was not carried out according to specifications. For example, initial tightening and tightening before completion can be completed in one go without the use of a torque wrench, and subjective estimation can also be made. In order to ensure the construction quality of the bolt connection project with good strength, the supervising engineer needs to have a high sense of responsibility. While supervising the contractor to improve quality awareness, increase quality management, and implement quality determination measures, they should also carry out work, side by side supervision, and parallel inspections. Only in this way can the construction quality of bolt connection projects with good strength be strictly controlled.