![Roof Framing: definition of Collar Ties, Rafter Ties, Structural Ridge Beams, causes of roof collapse & wall spread. Roof Framing: definition of Collar Ties, Rafter Ties, Structural Ridge Beams, causes of roof collapse & wall spread.](https://inspectapedia.com/structure/Roof_Framing_116_DJFs.jpg)
Roof Framing: definition of Collar Ties, Rafter Ties, Structural Ridge Beams, causes of roof collapse & wall spread.
![Roof Framing: definition of types of rafters, definition of Collar Ties, Rafter Ties, Structural Ridge Beams, causes of roof collapse & wall spread. Roof Framing: definition of types of rafters, definition of Collar Ties, Rafter Ties, Structural Ridge Beams, causes of roof collapse & wall spread.](https://inspectapedia.com/structure/Roof_Framing_118_DJFs.jpg)
Roof Framing: definition of types of rafters, definition of Collar Ties, Rafter Ties, Structural Ridge Beams, causes of roof collapse & wall spread.
![wood - Is it necessary to use ceiling joists (ties) with conventional rafters? - Home Improvement Stack Exchange wood - Is it necessary to use ceiling joists (ties) with conventional rafters? - Home Improvement Stack Exchange](https://i.stack.imgur.com/ZyH9b.jpg)
wood - Is it necessary to use ceiling joists (ties) with conventional rafters? - Home Improvement Stack Exchange
![Roof Framing: definition of types of rafters, definition of Collar Ties, Rafter Ties, Structural Ridge Beams, causes of roof collapse & wall spread. Roof Framing: definition of types of rafters, definition of Collar Ties, Rafter Ties, Structural Ridge Beams, causes of roof collapse & wall spread.](https://inspectapedia.com/structure/Rafter-tie-locations-118-DJFs.jpg)