Refractory concrete roofing made of prefabricated elements

摘要

Refractory concrete roofing made of prefabricated elements, characterised in that the sector-shaped elements are suspended by their external reinforcement 3 fastened to detachable suspension devices 4, so as to be centred with respect to the geometrical centre 7 of the opening made in the roofing while forming a spherical arch and bearing on an abutment 6, the self-supporting fitting of the arch enabling the suspension devices 4 to be released. <IMAGE>