Don_P
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# Posted: 10 Jun 2016 22:48 - Edited by: Don_P
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These are excellent connectors when used properly.
Go back to the first paragraph of DCA5... the cladding of a post frame transfers the vertical and horizontal forces to the frame.
If the braced walls (sheathed walls) and diaphragms(sheathed roof and floor) transfer load to, and brace, the properly sized posts... then the moment at that post connection to a solid/stable footing is low. The cladding is the wind bracing.
If you are building say an open picnic shelter, a roof atop tall poles with no other bracing to prevent the poles from overturning... the moment at that post to footing connection is very high, these connectors would simply split the posts at the bolts.
One way to get a sense of the 28,000 in-lb moment capacity. My brain works in foot pounds, small blocks and torque wrenches, same principle. 28,000 in-lbs/12= 2333 ft-lbs. That connection is good for up to 2333 ft-lbs of torque coming from the post. The post is our torque wrench. Let's make it easy and make the posts of our picnic shelter 10' tall. Divide 2333 ft-lbs by 10 feet... 233 lbs. We can push on the top of the post with up to 233 pounds of horizontal force (wind on the roof). Posts are say 8' apart, building is 24' wide, pitch is 4/12, wind is applying 20 lbs/sf of pressure... we're getting into serious trouble without some solid bracing somewhere. Sheath it, kneebraces or diagonals with quantifiable connections, a moment frame, are ways I can think of offhand to pick up more bracing.
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