The beams represent the stability, support and strength of the foundation; dreaming of the beams means that you have firm beliefs.

Dreaming of a broken beam in a house at home indicates that something bad has happened at home.

Dreaming that the beam of the house is broken means that the structure is not strong, which may imply that when the dreamer encounters adversity, the foundation is shaken, the squeeze out is unstable, or the belief is shaken, or some support and strength are lost.