Generating high node congruence in freeform structures with Monge's Surfaces

International audienceThe repetition of elements in a free-form structure is an important topic for the cost rationalization process of complex projects. Although nodes are identified as a major cost factor is steel grid shells, little research has been done on node repetition. This paper proposes a family of shapes, called isogonal moulding surfaces, having high node congruence, flat panels and torsion-free nodes. It is shown that their generalization, called Monge's surfaces, can be approximated by surfaces of revolution, yielding high congruence of nodes, panels and members. These shapes are therefore interesting tools for geometrically-constrained design approach

Revue d'histoire du Bas Saint-Laurent, vol. 6 (1)

Éditorial: Une histoire régionale possible -- L'Est du Québec au 19e siècle -- Historique du peuplement du Bas Saint-Laurent et de la Gaspésie -- L'exploitation agricole -- L'exploitation forestière -- En annexe..."le rapport Taché" -- La vieille tannerie de Luceville. Un témoin des débuts de la mécanisation manufacturière -- Le logo de la société d'histoire du Bas Saint-Lauren