Abstract: In a joint formwork for glass building units, which consist of a plurality of glass units, in particular glass blocks, which are connected by reinforced mortar or concrete joints which are covered on at least one side by outer frames which enclose the glass units, according to the invention it is provided that each outer frame forms a building unit and the cover strips of its angularly rigidly interconnected frame members are individually positively connected on their rear side to neighboring frame members of adjoining outer frames by moulded-on, projecting tongues and covered edge strips, the edge strip on each frame member being recessed for the guidance of at least one tongue of the neighboring frame member and having for the frame recess of the other frame member a substantially smooth tongue and at least one further tongue, which bears on its upper side a groove, which establishes the positive connection to the edge strip.

Abstract: The invention relates to a method for erecting walls made of glass structural bricks and a joint-lining in which the said bricks are built up with the joint-mortar, if necessary strengthened with reinforcing elements, with substantially horizontal and vertical joints, brick by brick, from bottom to top of the wall and the joints therein are lined, in connection with which, and for the purpose of reducing the need for skilled masons to such an extent that correct laying of the glass bricks may also be carried out by unskilled and untrained labor, and so that the amount of equipment required at the work-site may be considerably reduced or completely eliminated, provision is made, according to the invention, for the respective outer and inner linings of the horizontal and vertical joints to be applied, whereupon the lining of at least one horizontal joint, possibly after inspection of the reinforcing rods between the said joint-linings, is used as a lost outer shuttering for the joint-mortar and serves thereafte