Second, verify equal potential welding and other grounding parts before installation of the lightning avoidance tower. Regarding parts of equal potential welding and repetitive grounding, such as equipment rooms, changing electricity rooms, fire -fighting machine rooms, air -conditioned machine rooms, elevator computer rooms, water supply pipes, cooling towers, fan, etc. Essence Regarding the high -rise construction of more than 45 meters, each upward 3 floors should laid a 25mm × 4mm flat steel and the bottom line to welded into a circular horizontal lightning strip in the layout of the beam. Successfully. The metal pipelines and metal objects in the building should be welded with lightning protection; the vertical metal pipes laid straight should be welded with lightning protection at the bottom and top of the top. When building the glass curtain wall lightning protection and other potentials, pay attention to relieving welding on the main tendon of the column. If the glass curtain wall added later, contact the construction area and the characteristics of the building, and issue a specific lightning protection construction plan. The lightning -proof network and the lightning rod and metal objects on the top of the roof should be welded into a whole.
Third, check the top and transgender welding quality before installation. For grounding nets with column tendons, the demand construction personnel are required to clear the orientation of each pillar according to the axis and the number of reinforced roots to prevent leakage or error welding, and prevent welding length and quality of lack of planning standards. Check the quality of the leading point and cross -steel welding quality, and the positioning logo on the welding lead is to prevent welding errors to form ground to stop the error. It is particularly layout of the transform layer. Due to the adjustment of the column tendons, it is easy to weld and leak welded when welding in the pillar.
Fourth, control the quality of the material before installing the tower to ensure the welding quality. The first is the three certificates of the materials, the second is to see the material standards, and the third is to check whether the galvanized materials using planning and standard rules in construction. The construction of lightning protection projects is mainly welding, welding quality resolution project quality. The personnel who do not pass the welding skills to conduct lightning protection and grounding operations to form a situation where the lightning protection project is not qualified. The qualification level and the qualification certificate of the construction personnel should be severely reviewed.
Fifth, check the ground -to -ground welding. Founded ground welding is the top link of ground construction. Regarding the welding of the root beam welding or the welding of the pile foundation reinforced steel and the root reinforcement, the welding of the root reinforcement and the column band, it is necessary to strictly check the root chart and the address one by one, and to admit whether the reinforcement of the roots at the root of the telescopic joint must be admitted. After the entire grounding mesh welding is completed, the ground resistance value test should be performed as soon as possible to see if it meets the planning needs.
