Final answer:
Sand interceptors are typically required to prevent sand from entering and clogging drainage systems, and their installation is often mandated by building codes for environmental protection and infrastructure maintenance.
Step-by-step explanation:
The requirement for sand interceptors is typically true, especially in contexts where sand and grit could enter the drainage system. These interceptors are essential in places such as repair garages, car washes, or factories where sand might be prevalent due to the nature of work being done.
Building codes often mandate the installation of sand interceptors to prevent sand from entering and potentially clogging the sewage system, which could lead to environmental contamination or damage to wastewater treatment facilities. While requirements can vary by region, it is generally advised to follow local regulations and best practices for environmental protection and infrastructure maintenance.