Is a section through the side jamb on a window detail a slice through the jamb looking down?

A section through the side jamb on a window detail is indeed a representation of a slice that reveals the internal components and materials of the jamb. When a section is drawn, it essentially provides insight into the height and depth of the jamb as if it is being cut vertically at that point.

This allows architects, builders, and various stakeholders to understand how the jamb interacts with other elements, such as the window itself, the wall assembly, and any associated weatherproofing or insulation layers. The drawing typically conveys information about dimensions, materials, and construction techniques, which are crucial for proper installation and performance of the window.

In essence, the term "section" indicates a view that is perpendicular to the object being sectioned, thus providing a detailed internal view rather than a top-down depiction. Therefore, the statement that a section through the side jamb is like looking down is not accurate; rather, it's about slicing through to reveal what is inside, thereby affirming that the response is correct.