Abstract: A modular self-supporting arched ceiling structure has a plurality of interconnected modules each extending in a first direction over an arc and arranged one after the other in a second direction which is transverse to the first direction, with each of the modules being composed of a plurality of interconnected panels located adjacent to one another in a direction of elongation of each of the modules, and each of the panels has two plates spaced from each other to form therebetween a space which is filled with a cellular material with one of the plates composed of a plurality of strips of a heavy-duty high-modulus material.

Abstract: A structural block has a body which is yieldable in a transverse direction; and a plurality of reinforcing elements provided on the body and extending in a vertical direction, so that loads applied in a vertical direction are adequately taken by said reinforcing elements, while under the action of transverse forces the body can yield and therefore the whole structural element can yield.

Abstract: A construction panel comprises two plates spaced from one another by a predetermined distance, and a plurality of strips extending transversely to one another and between the plates and connected with the plates so as to form a plurality of cells between the strips and the plates inside the panel.