How to calculate the bearing capacity of square tube and what formula are there

In order to calculate the bearing capacity of square tube, we need to consider the specification, material, span, strength and so on. Here, we need to make clear what is called "bearing capacity". The so-called bearing capacity is how much pressure can be borne on the suspended span. For example, the two ends of a 50 * 30 * 1.5 square tube are erected, and the span of 1 meter is suspended in the middle. On this 1 meter span, the 50 * 30 * 1.5 square tube can put multiple items.

In general, according to the design and calculation of the construction drawings, and then consider which kind of square pipe material to use (for example, Q235 material or Q345 material, etc.), the square pipe material here needs to consider the specification and thickness of the square pipe, the material performance of the square pipe, the production process of the square pipe, and the weld strength of the square pipe, etc., which will affect the bearing capacity of the square pipe.