Reinforced Concrete Stair Section Detail with Slab and Rebar Layout

The drawing presents a reinforced concrete stair section detail showing the structural arrangement of stair slabs, reinforcement bars, and supporting elements used in building construction. The stair section illustrates the step profile, landing connection, and inclined slab configuration forming the staircase structure. Reinforcement placement is clearly indicated, including main reinforcement bars, distribution reinforcement, and structural beam connections that provide strength and load transfer across the stair system. The detail also identifies the concrete slab formation, stair tread structure, and alignment between the upper and lower landings. This stair section provides engineers and architects with a clear understanding of how the staircase integrates with the structural floor system.

The drawing also highlights material layers and structural components used in reinforced concrete stair construction. The section indicates cement mortar finishing on stair treads, sand filling layers below structural elements, and concrete slab construction following structural design requirements. Reinforcement spacing such as Ø12 at 0.20 and Ø10 at 0.25 is shown to demonstrate reinforcement distribution across the stair slab and landing support areas. The AutoCAD files illustrate how reinforcement cages, structural concrete slabs, and finishing layers combine to form a stable staircase structure. This detail assists architects, civil engineers, and builders in understanding stair slab reinforcement arrangement and structural stair construction methodology.