Stairway and column construction detail 2d view CAD structural block autocad file, staircase detail, steps detail, riser and tread detail, concrete masonry detail, reinforcement detail in tension and compression zone, brick masonry wall detail, column installation plan detail, riser height and tread width detail, hook up and bent up bars detail, hatching detail, stirrups detail to hold up bars in position, reinforced concrete cement (RCC) structure, etc.