aligning top plates with different rafter depths


chrisinnh
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Back again!  Going to be a habit, working on a Passive House retrofit.

 

Half of a 1986 saltbox will be converted to a clerestory with tji rafters, the other half will get a second set of 2x10 rafters overlaying the existing.

 

When I split the roof planes between clerestory and saltbox, and change the clerestory rafters to 18in tji rafters, Chief drops the top plates.  How do I keep the plates at a constant height?  The roof overlay on the second half of the roof will match the height.

Screenshot 2026-08-21 231644.png

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Does the trick, nearly!  I plugged in different values until the bottom of the rafters aligned with the top plates.  But, I assume, the accurate value is the difference in plumb cuts between the two rafter dimensions? 

 

Framing and elevation camera views attached.  The elevation and framing views don't agree.  Two issues: elevation view isn't repopulating to reflect framing; elevation view shows proper rafter tails while framing view does not.

Screenshot 2026-08-23 090502.png

Screenshot 2026-08-23 090613.png

Screenshot 2026-08-23 093426.png

Edited by chrisinnh
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