Need help with a slight roof sag at the ridge beam splice. 1

[bulkman]

I have a 22 by 24 ft garage that has a ridge beam with a slight sag at the splice. The ridge beam is a 2x10 and consist of 1 16ft and 1 8ft The problem is I have a sag of 3/4 to 1 inch at the joint. The rafters and collar ties are in place but the sheathing has yet to be installed. My question is: If I jack up the splice the necessary amount to make the ridge beam straight and apply the sheathing will the ridge beam stay at the corrected straight position once the sheathing is installed and the jack is removed?

Thanks for any help.

Geno

 

[mwang]

yours is a ridge board, not a ridge beam. just jack it up and install new collar ties at lower position each side of ridge board splice joint.

 

[BruceSol]

Can you use a splice plate?

 

[AJGIII]

This is likely too late now. But....
A large splice plate with another 2x member underneath the gap is a good idea. Jacking up the ridge and adding a collar tie is an adequate temporary approach, but the collar tie is not useful against moments developed between the rafters and tie for the long term.
If the ridge opened up, it is possible the walls parallel to the ridge bowed out at the top.

 

[RG88]

I agree with both AJGIII & mwang. The collar tie style repair will work, but if the rafters are not sufficiently stiff in relation to the collar tie height, then the rafters will thrust outward. At the rafter heel are there parrallel ceiling joists? If so the collar tie should be adequate, if not then the rafters in this area should be stiffended. A good reference is your local building code. The IRC covers this point....collar tie height to rafter span/size to resist outward thrust.

 

[rlflower]

If anyone is still reading this thread...

I see that nobody has brought up the most critical issue here: what is the roof pitch? This question must be answered before we can make any determination.