How wide can the column-free awning on the factory porch be?

The width of rainproof shed design specifications.

1. The stair tread width is 300mm and the height is 150mm, which is the golden ratio and is relatively moderate. However, for public buildings, the width should be greater than or equal to 300mm, and the height should be 100mm-150mm, which is more moderate. The width of staircases in residential buildings must not be less than 1100mm, and the width of stair landings must not be less than 1100mm. These are only part of the design specifications. Please refer to the design specifications for specific details. 2. The stair tread is 300mm wide and 150mm high, which is the golden ratio and is relatively moderate. However, for public buildings, the width should be greater than or equal to 300mm, and the height should be 100mm-150mm, which is more moderate. The width of staircases in residential buildings must not be less than 1100mm, and the width of stair landings must not be less than 1100mm. These are only part of the design specifications. Please refer to the design specifications for specific details. 3. The stair tread is 300mm wide and 150mm high, which is the golden ratio and is relatively moderate. However, for public buildings, the width should be greater than or equal to 300mm, and the height should be 100mm-150mm, which is more moderate. The width of staircases in residential buildings must not be less than 1100mm, and the width of stair landings must not be less than 1100mm. These are only part of the design specifications. Please refer to the design specifications for details. 4. Architectural design fire protection specifications, high-rise building design fire protection specifications, hotel design specifications, parking garage design specifications, parking garage fire protection design specifications, urban public toilet design specifications, catering building design specifications, urban barrier-free design specifications, etc.