Longitudinal sections of mobile classroom - have separate roofs with connecting beams along longitudinal edges, sideways bolts on beams and overlapping zinc coping(s)

摘要

The mobile classroom is divided lengthways into at least two dismantlable connected parts, each of which is supported on a movable metal under carriage. The latter is composed of a chassis with wheels and a drawbar to permit movement along the highway. The chassis are connected to each other by bolts, and are supported on the underside by adjustable jacks. The lengthways parts of the classroom are provided with a separate roof supported by crossbeams, these roofs (8) having a connecting beam (9) extending upwards and downwards on their lengthways edges to be connected the one to the other. These beams are connected laterally by bolts (10) and are covered on their top side by overlapping zinc copings (12, 13).