Concrete Staircase Formwork Detail with Plan Section and Support

The drawing presents a concrete staircase formwork detail showing the construction arrangement for a straight two-flight stair structure. The plan and section illustrate the stair layout, landing connection, and support system used during concrete casting. The stair formwork drawing shows timber boards, structural braces, and supporting elements that hold the stair slab during concrete pouring. The section also represents the stair elevation profile and the arrangement of risers and treads forming the staircase geometry. The drawing includes a detailed layout of wooden shuttering boards, side supports, and inclined formwork panels that create the stair shape before concrete curing. This construction detail helps engineers understand how stair slab geometry is maintained through formwork support and structural alignment.