Module assembly formula component stair

The utility model provides a module assembly formula component stair relates to stair technical field. Including the stair body, the stair body includes reinforced frame and the concrete layer who pours and wrap up reinforced frame, concrete layer includes stair backup pad, the fixed setting a plurality of fliers in the stair backup pad and the last collection portion and time collection portion that extend to backup pad both ends and level, reinforced frame includes first reinforcing bar, second reinforcing bar and third reinforcing bar, the upper surface of flier is equipped with anti -skidding recess, stair backup pad and flier between be provided with the lightening hole, pack the light material in the lightening hole, it is equipped with first mounting hole to go up collection portion, collection portion is equipped with the second mounting hole down. Be equipped with on the flier and be used for installing the first preformed hole of angle bead and the second preformed hole that is used for installing t