This Architectural Drawing is AutoCAD 2d drawing of Enclosure wall details. A wall that encloses a piece of land. the foundations of the large timber church, the church enclosure wall. Enclosure Components. The primary function of the enclosure is to separate the interior environment from the exterior environment to which it is exposed. Physically, the typical building enclosure usually consists of the following components: the roof system(s) For more details and information download the drawing file.