Step for overhang staircase of building, has encasing end formed on both sides of slit oriented in extension direction including step, where slit cooperates with post of carrier structure for immobilizing step

摘要

The step (3) has an encasing end formed on both sides of a slit oriented in an extension direction including the step. The slit is orthogonal to an end surface of the encasing end. The end has upper and lower support surfaces respectively cooperating with complementary lower and upper support surfaces of a carrier structure. The slit cooperates with a post (10) of the structure for immobilizing the step along a horizontal direction perpendicular to the slit. An independent claim is also included for a carrier structure for carrying a step of an overhang staircase.