I would like to build a shelf capable of holding a maximum load of cca. 60Kg. The image show the placement of the shelf.
Below is a conceptual drawing with the dimensions.
The image shows the brackets serving as the main support for the shelf. They are capable of carrying far more than 60Kg but have a limited width.
This makes the "critical surface", the weakest link of the construction and the part most prone to breaking.
How would you approach this problem?