A set of civil engineering building supplies

Abstract

This article is a set of civil engineering building supplies consisting of tread supports 1, 2, and 3 that support the treads of a 90-degree three-stage revolving staircase. The tread supports 1, 2, and 3 are attached to the inner columns of the staircase room as shown in the "Reference Perspective View Showing the Use State", and the inner edges of the three treads are supported by the tread supports 1, 2, and 3. The right side surface of each tread support is formed at an angle corresponding to each kick-in plate to be arranged. Grooves are formed in the tread supports 1 and 2 for inserting and passing the kick-in plates arranged above from below.

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