Final answer:
In plumbing, a trap is a device that prevents sewer gas from entering a building. The number of single compartment sinks that one trap can serve may vary depending on local plumbing code requirements and factors such as pipe diameter and distance between the sinks.
Step-by-step explanation:
In plumbing, a trap is a device that prevents sewer gas from entering a building. It is usually installed below a fixture such as a sink. The number of single compartment sinks that one trap can serve depends on the local plumbing code requirements.
For example, in some areas, a trap may be required for every single compartment sink, while in others, a single trap may be allowed to serve multiple sinks. The specific number of sinks that can be served by one trap will depend on factors such as the pipe diameter and the distance between the sinks.