arched truss: Meaning and Definition of

arched' truss'

Pronunciation: [key]
  1. a truss having an archlike form but unlike a true arch in that it is free to move horizontally at its base, as in expanding or contracting because of temperature changes. Cf. braced arch.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.