Can the lightning conductor lead directly to the exterior wall and connect it to the ground?
The lightning conductor can not be directly fixed on the outer wall and connected to the ground, and all the columns are welded with steel bars in the column.Through the column reinforcement to lead the line to the ground.
From the construction of 45 meters, every three layers using two main reinforcement structure beam in long line and reliable welding, welding and forming, grading ring.
A kind of building lightning protection downlead spacing is not greater than 12 meters, two meters is not greater than 18, three less than 25 meters, the project is the two kinds of lightning protection using the building of reinforced concrete columns or shear wall in two more than Phi 16 main bars are generally welded as deflectors, the spacing is not greater than 18 meters, can meet the requirements. During construction, the welded joints should be welded together with the reinforcement of the civil construction, and the joints should be bridged. According to the design drawings to find out as the lead out of the steel bar location, with paint mark, two lead line, each layer with Phi 12 round steel for cross, so that the lead line connection is more reliable. At the outer field 1m from the outer room, the -40*4 galvanized flat steel is drawn from the lead line to the outside soil layer as an alternate grounding electrode connection line. When the building structure is completed, the grounding resistance is tested, and when the measured grounding resistance does not meet the requirements, the grounding electrode is connected and repaired.
The outer walls of the four corners of the building lead to a test terminal box 0.5 meters away from the outdoor ground. The leads are led out of the -40*4mm galvanized flat steel. Wall decoration, wall with ground test board, test board used 100mm*100mm*6mm steel plate, the middle hole penetrates through a bolt, back welding, front mounted on the wall above the nut, brush the paint around with the same colours, attached to the surface of the ground.
Two long lower base main reinforcement building piles, base on the axis of welding in the natural form the basis of grounding grid for grounding. In a position at the lightning protection downlead, will do for lightning protection downlead column main reinforcement and raft foundation in the periphery of the plate reinforcement, beam main reinforcement inside, four corner pile main reinforcement reliable connection, with not less than 12 bar cross weld diameter, double-sided welding welding bar length is not less than 6 times the diameter, diameter of one side welding length not less than 12 times the welding between the foundation reinforcement in the bridge should be done. -40*4mm galvanized flat steel can be reliably welded without base reinforcement and welded on three sides.
