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

Dreaming of a beam indicates that you will take responsibility or bear a burden.

Dreaming of broken beams means that the structure is not strong, which may imply that when the dreamer encounters adversity, the foundation is shaken, the crowd is unstable, or the belief is shaken, or some kind of support and strength is lost.

Original Dreamsmeaning Book

Dreaming of Sheliang generating electricity, avoiding it at home. Dunhuang Book of Dreams

The roof beams suddenly buckled, and the master was violent. Dreamsmeaning Book