In actual storage warehouse project, the design of three-dimensional library shelving – often to calculate according to the multiple relationship of 75 mm, the reason that the most of the shelving between the column and beam are used in hanging plate connection, and when the pillar manufacturing will have good connection holes in advance.
On shelving pillar of pitch, small medium-sized shelving generally is 50 mm, the heavy shelving is50 mm and 75 mm, and three-dimensional library shelving is 75 mm in the majority, in the beam can be by changing the bar of the hanging piece of welding position to the height of fine-tuning, but this will make the site installation to the corresponding installation of different beams, each layer adds difficulty to on-site installation and easy to get wrong, wrong is not easy to find and may at the stacker take put off goods such as serious consequences, so this is as far as possible in the design of the beam welding uniform beam height.
Therefore, after we confirmed the first pickup height (first layer height, not necessarily in 75 mm), starting from the second floor all the storey height is determined in accordance with the best design in multiples of 75 mm.