Scissors truss

A scissors truss supported on two walls

A scissors truss is a kind of truss used primarily in buildings, in which the bottom chord members cross each other, connecting to the angled top chords at a point intermediate on the top chords' length, creating an appearance similar to an opened pair of scissors. Scissors trusses are used almost entirely in building construction to support a pitched roof, where a sloping or raised ceiling surface is desired.^[1]

References

1. Harris, Cyril M., ed. (2005). Dictionary of Architecture and Construction (4th ed.). McGraw-Hill. ISBN 978-0071452373.