Abstract: The present disclosure relates to a notched steel beam and a floor slab structure of a flange embedded floor slab and a construction method. The notched steel beam comprises a web (1), wherein an upper flange (2) and a lower flange (3) are respectively arranged on the upper end and the lower end of the web (1); the flange embedded floor slab comprises four rectangularly distributed floor slab stand columns (7), a steel beam (8) is arranged between the adjacent floor slab stand columns (7), laminated slab bottom slabs (9) are arranged between the two steel beams (8) which are symmetrically distributed, floor slab reinforcing steel bars (10) are arranged above the laminated slab bottom slabs (9), a concrete layer (11) is arranged on the floor slab reinforcing steel bars (10); and the steel beam (8) is the notched steel beam of the flange embedded floor slab.

Abstract: The present disclosure provides a combined prefabricated reinforced concrete stair mold and a splicing method. The combined prefabricated reinforced concrete stair mold comprises a bottom mold platform (1), wherein an upper platform module (2), a tread module (3) and a lower platform module (4) which are spliced with one another are sequentially arranged on the upper surface of the bottom mold platform (1), and corner modules (5) are arranged between the upper platform module (2) and the tread module (3) and between the tread module (3) and the lower platform module (4); the tread module (3) comprises a tread upper surface mold (6) and a tread lower surface mold (7); and the tread lower surface mold (7) comprises a plurality of combined templates (8) formed by mutual splicing, and the tread upper surface mold (6) comprises a plurality of tread splicing pieces (9) formed by mutual splicing.