How much roof weight can a 2x2 wall 23' long support?

The weight a 2x2 wall can support depends on various factors, including the wall's orientation (vertical or horizontal), the material of the wall, the type of roof, and local building codes. Generally, a 2x2 wall is not designed to bear significant loads, especially over a length of 23 feet. For structural integrity and safety, it's essential to consult a structural engineer or building professional to assess the specific situation and ensure compliance with local standards.