| 摘要 |
PURPOSE: A structure of a concrete ladder is provided to easily construct by fabricating a fixing portion in a concrete structure and a ladder part protruded outside. CONSTITUTION: An assembly type ladder for burying concrete is composed of: a ladder foothold(10) for constituting a ladder, a concrete fixing supporter(30) for fixing the ladder foothold(10) at a concrete structure by combining with the ladder foothold(10) through a combined fixing unit(20) formed at outside, buried together when establishing the concrete structure, a cap(40) for firmly fixing the combined part of the concrete fixing supporter(30) and the ladder foothold(10) by being coupled to the combined fixing unit(20). Herein, a groove(23) is formed, connected to the inside of a main body of the concrete fixing supporter(30). Meanwhile a protrusion having a specific inclined face to the direction of the ladder foothold(10) combined to prevent a separation of the ladder foothold(10) in the groove(23) is formed. Therefore, a cap combined part for fixing is divided and constituted to provide an elastic force to easily combine a stand of the ladder foothold(10).
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