The subject innovation is in Article TB Constructed stairs as relates to Article angle type TB for installation in prefabricated, prefabricated in the following the cement mortar layer which forms a cement mortar layer is used as a binder in each basic part horizontal and vertical planes staircase with a suitable thickness according, non-slip member is formed on a horizontal plane leading set of the TB is formed of a natural stone with a thickness thinner than terrazzo thickness, its bottom surface has been terrazzo cement mortar filling non-slip member can be solidly attached to Article TB a pair of mortar-filled groove is designed, it characterized in that a plurality of pairs which are formed at regular intervals while facing each other to make.
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