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Second story floor boards removed and a conduit placed in the joist slot.

Conduit in Place

Second story floor boards removed and a conduit placed in the joist slot.

An illustration of an entry way including all terms.

Entry Way

An illustration of an entry way including all terms.

"A shaft-bearing secured to the floor, and used for running countershafts and lines when they cannot conveniently be suspended from the ceiling-joists." -Whitney, 1911

Floor Hanger

"A shaft-bearing secured to the floor, and used for running countershafts and lines when they cannot…

A single floor showing joists at a, a, a.

Single Floor

A single floor showing joists at a, a, a.