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Old 18th September 2019, 11:18 AM   #1
Join Date: Apr 2019
Posts: 7
Default Ridge beam crank plates

Thirty-plus years ago the loft conversion place I worked at had a couple of plate details for doing a cranked ridge beam. My copies have long disappeared.
Normally the ridge beam can be supported at each end, either by being built into a wall, posted in a stud wall or posted in the room, so the beam was always a straight beam.
I've got a job with a small rear dormer and rather than build the hip up into a gable, they are insisting on keeping the roof a full hipped roof.
The client (understandably!) doesn't want a post in the room so the ridge beam must follow the pitch of the side roofslope.
Is there a way to calculate crank plates? Usually 10-15mm thick plates, maybe 500-600mm long (each leg) with one on each side of the cut timber ridge beam with multiple bolts through the lot.
Thanks in advance.
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