When the vertical pole is connected by butt joint, the butt joint fasteners of the vertical pole should be arranged in a staggered manner.
The joints of two adjacent vertical poles should not be set in synchronization.
The distance between the two spaced joints of one vertical pole in synchronization should not be less than 500mm in the height direction.
The distance from the center of each joint to the main node should not be greater than 1/3 of the step distance.
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