How To Install Pergola Will Be More Stable?

Recently I have a new American Aluminium Pergola project. After several times of communication with the customer, the customer bought 3 sets of Bioclimatic Pergola, 1 set of Freestanding design, and 2 sets of one side wall-mounted design. In this project, it is worth mentioning that in order to make the Aluminum Louvered Roof more stable, the customer proposed to bury the column, and we suggested that the column should be buried 3ft because this will indeed make the Pergola more stable. Therefore, it is recommended that customers in bad weather areas can bury the column 3ft to achieve a stronger effect.