Valley & Hip Conditions for Wood Framed Cathedral Ceiling

[smb4050]

There have been several posts about design of wood framed cathedral ceilings using a ridge beam for gravity loads, but what about the connections and horizontal loads for cathedral ceilings with valley and hip conditions? Should a connection between 2 joists at a valley or hip still have a tension strap? Does diagraph action resolve these loads?
What if a ridge beam ends at hip condition without a support column? Is a tension member (collar beam) required? Just wondering how other engineers address these conditions. Thanks

 

[msquared48]

Should a connection between 2 joists at a valley or hip still have a tension strap? Does diagraph action resolve these loads?

No and yes.

What if a ridge beam ends at hip condition without a support column? Is a tension member (collar beam) required?

Not necessarily required, if a moment connection can be provided.

Mike McCann
MMC Engineering
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