Under floor raceways are well suited to installations having which feature?

Under floor raceways are particularly well suited to installations that feature a secondary slab because this design facilitates the placement and management of electrical and communication wiring. A secondary slab provides an additional structural layer above the ground level slab, creating a cavity or space underneath it. This space is ideal for housing raceways, as it allows for organized routing of wires and cables without cluttering the visible areas of a building.

Moreover, utilizing under floor raceways in conjunction with a secondary slab helps to keep the wiring out of sight and makes it less susceptible to physical damage while ensuring easy access for maintenance and modification. This setup is often preferred in commercial buildings with high traffic or areas where aesthetics are a priority, as it can enhance both safety and appearance by hiding wiring infrastructure.

Other options like terminal access, electrical outlets, and high ceilings do not specifically address the primary advantage of under floor raceways, which is their compatibility with a secondary slab that provides an effective pathway for wiring in a neat and orderly manner.