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Valley & Hip Conditions for Wood Framed Cathedral Ceiling

Valley & Hip Conditions for Wood Framed Cathedral Ceiling

Valley & Hip Conditions for Wood Framed Cathedral Ceiling

(OP)
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

RE: Valley & Hip Conditions for Wood Framed Cathedral Ceiling

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
Motto:  KISS
Motivation:  Don't ask

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