2D section detail showing the installation of a fire or smoke detector on the soffit of a concrete slab. The drawing illustrates a typical setup for room voids, featuring the detector assembly and its integration into the fire alarm system.
Technical elements include a back box secured to the slab with anchors, rigid and light steel conduit, and 2c x 1.2 mm cabling. The layout specifies the use of support clips for cable management and shows the mounting hardware required to fix the detector housing directly to the concrete surface.