Question:  We have a project where some existing pull boxes and conduit are set in structural concrete and are not easy to relocate or deepen or change.

The pull boxes have a solid concrete bottom as well as walls.  They are No. 6 in plan dimension (18x30 lid) but their depth varies from only 5 to about 12 inches (different boxes are different depths).  Three conduits enter each box in the bottom (not through sides).  We need to run a 24 strand trunk loose tube single mode fiber cable through...


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