| 摘要 |
A below floor marker used to locate a pre-installed pipe stub below a finished concrete floor includes a coupling adapted for attachment to the pipe stub, and a cap which fits on the coupling to seal the pipe while pouring the concrete. The top wall of the cap lies an inch or so under the finished floor elevation (FFE). The cap has resilient filaments at a center thereof extending through the thin concrete layer to provide a visual indication of the pipe stub location. An electronic marker is retained within the coupling to provide an additional electromagnetic indication of the pipe stub location. The transmission axis of the electronic marker is aligned with the centerline of the cap/conduit/pipe to provide precise location of the stub. The cap may include an upper sidewall having outer annular notches which facilitate cutting the upper sidewall to a height of the FFE.
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