Fixed restraint devices

Guides are mechanical devices which permit sliding in one direction of the horizontal plane, transferring force in the orthogonal direction. Restraints are fixed mechanical devices which block displacements along a plane transferring horizontal force in every direction. Neither ones transfer vertical loads. Experimental force-displacement curve of a GU series guide. A guide for the bridges of the Panagia Grevena Section (Greece). A restraint for flyover 1.1 of the Caracas - Tuy Medio Railway (Venezuela).