Usage patterns
〈場所〉に梁を渡すto lay a beam across (a space)
They laid a thick beam across the ceiling.
梁が〈物〉を支えるfor a beam to support something
This beam supports the roof.
梁がむき出しになるfor beams to be left exposed (visible, uncovered)
In old Japanese houses, the beams are often left exposed.
梁を組むto frame/assemble the beams (during construction)
The carpenters were working on framing the beams.