Plan of sinking courtyard on the first floor

Quick answer：

A sinking courtyard on the first floor refers to a courtyard that is lower in elevation compared to the surrounding ground level. This design can be used for various architectural and landscaping purposes, such as creating a more intimate space, allowing for better ventilation and natural lighting, or providing a unique aesthetic. The plan would typically include details such as the dimensions, layout of the courtyard, and any structural elements like walls, stairs, or pathways. In architectural design, sinking courtyards are often used to enhance the spatial experience and connectivity within a building.