Mixed steel and concrete floors

Mixed steel and concrete floors are normally made up of steel beams or joists, a corrugated steel sheet as well, and finally a concrete compression layer, with additional reinforcement. They are usually called collaborative slabs.

They are used when the main structure is made of steel and the floor must resist medium loads. It requires the same protections as a "Cover (construction)" folded sheet metal roof, but the increased resistance conferred by concrete allows it to be used as thin slabs in building floors. If it is used in the formation of a cover, concrete can be avoided.

Wooden forgings

The wooden floor is normally made up of wooden beams and a beam that varies, and can be made of wooden boards, vaults made of plaster or stone.

Before the industrial revolution, wood was the most used material to build beams and joists for floors, due to its availability and workability. The inter-beam was made up of stone or brick vaults. This was the usual way of forming building plans. Today it is out of use in Spain, and is used almost exclusively in single-family homes and unique buildings. In the United States, single-family homes with a wooden structure continue to be built, the floor being made of wooden beams covered with boards, forming a series of boxes.

It has moderate fire resistance, adequately fireproof, despite being a highly combustible material. It is ideal for lights and moderate loads, in addition to being the lightest. It is also capable of large spans thanks to the laminated wood, separating the beams conveniently according to the beam to be placed. However, it is more flexible and deformable than steel or concrete.

Mixed steel and concrete floors

Mixed steel and concrete floors are normally made up of steel beams or joists, a corrugated steel sheet as well, and finally a concrete compression layer, with additional reinforcement. They are usually called collaborative slabs.

They are used when the main structure is made of steel and the floor must resist medium loads. It requires the same protections as a "Cover (construction)" folded sheet metal roof, but the increased resistance conferred by concrete allows it to be used as thin slabs in building floors. If it is used in the formation of a cover, concrete can be avoided.

Wooden forgings

The wooden floor is normally made up of wooden beams and a beam that varies, and can be made of wooden boards, vaults made of plaster or stone.

Before the industrial revolution, wood was the most used material to build beams and joists for floors, due to its availability and workability. The inter-beam was made up of stone or brick vaults. This was the usual way of forming building plans. Today it is out of use in Spain, and is used almost exclusively in single-family homes and unique buildings. In the United States, single-family homes with a wooden structure continue to be built, the floor being made of wooden beams covered with boards, forming a series of boxes.

It has moderate fire resistance, adequately fireproof, despite being a highly combustible material. It is ideal for lights and moderate loads, in addition to being the lightest. It is also capable of large spans thanks to the laminated wood, separating the beams conveniently according to the beam to be placed. However, it is more flexible and deformable than steel or concrete.