TRUSSED GIRDER, ROOF FRAMING USING THE TRUSSED GIRDER AND METHOD OF CONSTRUCTING THE ROOF FRAMING OF A BUILDING USING THE TRUSSED GIRDER

摘要

Trussed girder, roof framing using the trussed girder and method of constructing the roof framing of a building using the trussed girder. In the trussed girder, an upper chord and a lower chord are jointed through lattice members. The trussed girder lncludes: a prestressing steel member; and an attaching mechanism for attaching the prestressing steel member to at least one of both the upper and lower chords to longitudinally extend under tension for providing prestress to the trussed girder.