trimmer joist

美 [ˈtrɪmər dʒɔɪst]英 [ˈtrɪmə(r) dʒɔɪst]
  • 网络托梁;搁栅
trimmer joisttrimmer joist

noun

1
joist that receives the end of a header in floor or roof framing in order to leave an opening for a staircase or chimney etc.
Synonym: trimmer

数据来源:WordNet