I would like to ask how to reinforce a rectangular container

When designing reinforcements for rectangular containers, the following steps can be followed: 1. **Determine the location of the reinforcements**: Reinforcements are usually needed on the side walls and bottom of the container to enhance the structure’s stiffness and strength. 2. **Select the type of reinforcement**: Reinforcement usually comes in the form of transverse and longitudinal bars, and the appropriate type can be chosen based on the size of the container and its operating conditions. For the rectangular container of 600x600x1500 you mentioned, several transverse and longitudinal reinforcement ribs can be installed on each side. 3. **Dimensions and spacing of reinforcements**: The dimensions (width and thickness) and spacing of reinforcements should be determined based on the operating pressure of the container, the properties of the material, and other loading conditions. Since your container is used under negative pressure conditions, the reinforcement must have sufficient strength to prevent the container from deforming or being damaged due to external pressures. 4. **Material selection**: The reinforcing material should be compatible with the main material of the container, and possess sufficient mechanical strength and corrosion resistance. Steel with the same or higher strength as the container is generally used. 5. **Fixing method**: The reinforcement can be fixed to the container by welding or bolt connection, etc. Welding is a common and reliable fixing method that provides good sealing and strength. 6. **Conduct strength calculations and verification**: After the design is completed, theoretical calculations and finite element analysis are used to verify whether the reinforcement design meets the safety and functional requirements; design adjustments are made if necessary. These basic steps can provide some guidance for designing stiffeners for rectangular containers. During the specific design, particular requirements and standard specifications in practical applications also need to be taken into account. .

It’s software-based calculation; there are ready-made software solutions available