Floor
A floor is the walking surface of a room or vehicle. Floors vary from simple dirt in a cave to many-layered surfaces using modern technology. Floors may be stone, wood, bamboo, metal, or any other mat...
Floor - Wikipedia
Solid ground floor

Cement screed: The concrete floor may be topped with a 25 mm thick cement and sand screed trowelled to a smooth finish. The usual mix is 1:3 and a colouring agent may be added to the mix to obtai...
Solid ground floor - Wikipedia
Building services engineering
Building services engineering, technical building services, architectural engineering, building engineering, or facilities and services planning engineering refers to the implementation of the enginee...
Floor cleaning
Floor cleaning is a major occupation throughout the world. The main job of most cleaners is to clean floors.
The principal reasons for floor cleaning are:
Floor cleaning - Wikipedia