Truss failure - video

[Toolmaker51]

Whew. Staged or not, glad that wasn't the case when mine [65 footers, about 11' rise] were set. With the lower chord 16' off the floor, no-one was propping them up either! Manufacturer design code required them being swung in by crane, 2 nailers walking opposing 2" x 12" plates; affixing 42 of them full span and 10 more halves...Yeah it cost plenty ---but I'll won't have to re-roof for 50 years. That'll make me around 107 years old; everyone already knows what to get me for THAT birthday!