Answer: joists

AnswerCrossword Clue
JOISTSCeiling supports
JOISTSBuilding beams
JOISTSSupport beams
JOISTSStory boards?
JOISTSTimbers.
JOISTSFloor supports
JOISTSBuilding supports
JOISTSFloor or ceiling supports
joistsone of the parallel beams supporting a floor or ceiling