Room

01 /Main characteristics of a room

In this calculator, a room is the dimensions of the room where the stair will be installed (length, width, height).

In general, a room is a part of the space inside a building that has a defined functional purpose and is bounded on all sides by structures (partitions, walls, floor, and ceiling).

In architecture, construction, and law, this is a basic concept that helps classify and account for real-estate objects.

For an interior space to qualify as a «room», it must have the following features:

Isolation

The space must be clearly separated from other parts of the building by solid walls or partitions.

Closed contour

Upper and lower boundaries (ceiling and floor) are required.

Functional purpose

The space must be intended for a specific purpose (habitation, work, storage, equipment housing).

02 /Main types of rooms

All rooms fall into two broad categories:

Residential rooms

Isolated rooms suitable for permanent habitation. They are subject to strict sanitary, technical, and epidemiological requirements (heating, ventilation, a defined level of lighting, etc.).

Examples: apartment, living room, detached house.

Non-residential rooms

Rooms intended for any commercial, administrative, industrial, or domestic purpose, but not for permanent human habitation.

Examples: offices, shops, warehouses, factory floors, garages.

This category also includes auxiliary or shared spaces (stairwells, corridors, attics, basements, lobbies).

03 /How a building differs from a room

A building is a standalone structure as a whole (an apartment block, shopping centre, or school). A room is only a constituent unit within that building (apartment 15, a boutique on the ground floor, a physics classroom).