Final answer:
A coved tile is used at the meeting of a floor and a wall to prevent the accumulation of dirt and facilitate easier cleaning by providing a seamless transition between the two surfaces.
Step-by-step explanation:
The purpose of a coved tile set at the meeting of a floor and a wall in a building is to prevent dirt accumulation and ease cleaning. This type of installation is designed with a curved cove base, which eliminates the sharp angle between the floor and the wall. By doing so, it creates a seamless transition that does not allow for the build-up of dirt, debris, or bacteria, which is especially important in areas that require high levels of hygiene like kitchens, bathrooms, and hospitals. Additionally, this curved transition makes it simpler to clean the floor area thoroughly because mops and cleaning equipment can easily navigate the curve without leaving behind dirt in the crevice.