Bracing & Restraint

A full-scale truss bracing demo was an eye-catching feature of the BCMC 2017 show floor.

If you’ve been in the truss industry for any length of time, there’s one phone call you absolutely dread receiving: “We have a problem; your trusses collapsed!”

Question: 

How do I, as a truss manufacturer, adequately advise my customer against the dangers of 60 ft. and over truss span installations?

Question: 

Are there any schematics available on how to horizontally brace a 7/12 pitch roof?

Question: 

Is it common practice for the supplier/distributor of a truss to provide a publication regarding temporary bracing with the delivery of the material?

Question: 

What are the requirements on the permanent bracing of bottom chords? Can gypsum board diaphragms be used?

Question: 

I am a building inspector and have some questions regarding how to apply IBC 2012 2308.8.5 (IRC 2012 R802.8) (similar IBC 2015 2308.4.6 & IRC 2015 R802.8) to trusses, especially those with high heels:

Question: 

How important is continuous lateral bracing in roof trusses? Is it detrimental to the roof integrity if it is missing?

Question: 

What are the requirements for installing “valley set” overlay roof trusses? I am interested in nailing and support conditions. Some engineers ask for the bottom chord of the valley truss to be ripped to match the roof pitch of the underlying trusses. Is this necessary?

Question: 

What are the requirements for installing valley sets over roof trusses? I am interested in nailing and support conditions. Some engineers ask for the bottom chord of the valley truss to be ripped to match the roof pitch of the underlying trusses. Is this necessary? How can I calculate values for uplift resistance for the building inspector?