Vulcraft Glossary

T
Tagged End
The end of a joist or Joist Girder where an identification or piece mark is shown by a metal tag. The member must be erected with this tagged end in the same position as the tagged end noted on the placement plan.
Tensile Strength (of material)
Maximum tensile stress that a material is capable of sustaining as defined by ASTM.
Tie Joist
A joist that is bolted at a column.
Top Chord (TC)
This is the top element of the joist or Joist Girder member. It is comprised of two angles with a designated space separating the two angles. ( 1.0” typically on K-series with angle webs, hybrid, long span, and Joist Girders.)
Top Chord Extension (TCX)
The part of the top chord that extends past the standard bearing seat. The bearing seat may also be extended beyond the standard bearing seat.
Torsional Buckling
Buckling mode in which a compression member twists about its shear center axis.