特殊用法bar joist1.【建】轻钢搁架binding joist1.【建】用于加固的梁或拱boarding joist1.板条托梁bridging joist1.横梁common joist1.普通搁栅end joist1.端搁栅floor joist1.楼地板搁栅plate-girder joist1.工字板梁retractable steel joist1.可缩钢梁sidewalk joist1.人行道搁栅siege joist1.炉底托梁tail joist1.半端梁track joist1.托轨梁trim joist1.托架, 过梁trussed steel joist1.桁式钢质栏栅two-way joist1.双向梁wood joist1.木搁栅, 木托梁