Concrete, reinforced concrete stairs: construction of stairs

In modern construction assembled concrete or reinforced concrete stairs made of large units are used. Such reinforced concrete stairs have large flights and large-panel landing slabs. Landing slabs and flights of stairs are ribbed reinforced concrete slabs made by industrial method.

Concrete and reinforced concrete stairs. Construction: flights of stairs and landing slabs

Landing slab of the flight of stairs of reinforced concrete stairs has stepped upper surface, on which assembled reinforced concrete treads are mounted with mortar after installation of slab. One rib of landing slab of reinforced concrete stairs is made rectangular, another – with console for support of flights of stairs. Flights of stairs and landing slabs are fixed with welding of steel inserts after their installation at the place.

Concete form of reinforced concrete stairs

When making monolithic concrete or reinforced concrete stairs, concrete form or form for monolithic constructions are made on the place of their installation. Concrete form is set at the place of further installation of stairs, and is safeyl fixed, as in case of the lack of firmness and durability of concrete form large weight of concrete can deform or destroy it, and stairs will be damaged because of many defects.

To make the surface of the flight of stairs nice and smooth, concrete form is made of planed boards matched to each other, or is covered with smooth veneer from inside.

Concrete form shall have no gaps and cracks through which laitance could leak. Before filling the form or concrete form with cement they shall be wetted with water to make boards expanded and compacted.

Reinforced flights of stairs

In places where there is no safe support under the middle part of stairs, reinforced flights of stairs shall be. Reinforced frame protects concrete from cracks and fractures, and durability of construction is sufficiently increased. If there is hard foundation under the flight of stairs.

To make front edges of concrete steps not to crumble, they are covered with metal L-bar. Framing of steps with metal L-bar shall be made before concrete coating. To fasten L-bar with concrete pieces of steel wire are welded to it.

Enclosure of assembled and monolithic concrete stairs are made of metal with wooden or plastic handrail.