Hangers, connectors, and roof framing
Gene_Davis
| Posted in Construction Techniques on
Does your AHJ require you to use a hanger when fixing the top end of a common rafter to a structural ridge?
How about at the bottom end of a rafter heading into a valley?
At the bottom end of a rafter if it is bearing into a header, as for a dormer or skylight?
Our local AHJ has no real clue when it comes to this, and hardly ever comes onto a site. I have never heard of him inspecting anything structural.
If he is walking through and looking up, he might comment on a floor joist toenailed into a flush header, and point out that a hanger might be necessary, but as for roofs, I don’t know.
Replies
AHJ- authority having jurisdiction?
Wouldn't that be a regional thing ie hurricane, earthquake or snow country?
Mike
Small wheel turn by the fire and rod, big wheel turn by the grace of god.
I was looking for some responses from those who don't have those special requirements for wind and seismic. From those of us in "normal" places that don't shake that much, or have winds that overturn your pickup truck.
In jurisdictions such as Homestead, FL and San Francisco, all this residential framing stuff needs to be engineered, and I realize that.
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"A stripe is just as real as a dadgummed flower."
Gene Davis 1920-1985
My experience in MI was:
Ironically, on sawn lumber, we didn't have to put hangers or "joist angle" on roof parts, neither the valley jacks or hip jacks. None at the ridge either. The irony is this: when we cut in a skylight, the headers would need hangers and also the cripples that connected with the header needed hangers.
All floor or ceiling system cripples needed hardware.
So, why did they let us skate on the roof members? I don't know. All I know is they didn't fall so I was satisfied.
Thanks, Jim.
It seems weird, the requirement for hangers sometimes and not everywhere, but that is what I am seeing here. But "here" is a place where we've no oversight, thus my question for what goes on as allowable elsewhere.
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"A stripe is just as real as a dadgummed flower."
Gene Davis 1920-1985
gravity works in the whole country, not just where earquaks and high winds are common.
Welcome to the Taunton University of Knowledge FHB Campus at Breaktime. where ... Excellence is its own reward!
Of course. Just thinking the requirements and inspections would vary by region.
Here is my inspector situation of late-
We are currently doing a large school and the IOR's have taken to inspecting the same area more than once. While we know that should not be allowed we do not want to start a battle so we have a QC guy that has formed a relationship with the inspectors. He inspects before the inspectors with apprentices catching the pick up and then walks with the IOR during inspections. So far having the QC program in place has paid off for us. The old school foremen don't enjoy having small errors pointed out, but they have to adapt.
By the way was that earthquacks a spelling error or a crack about California? ; ^ )
Mike
Small wheel turn by the fire and rod, big wheel turn by the grace of god.
Edited 9/12/2009 4:50 pm by ruffmike
The keyboard on this laptop is getting quakie
Welcome to the Taunton University of Knowledge FHB Campus at Breaktime. where ... Excellence is its own reward!
The only one he catches is the flush header connection. They never call anything meeting at a 45 like rafters to hips. The last guy wanted me to put posts at each end of my non-loadbearing ridge. Luckily he is gone.
Our AHJ requires any hand framed roof to be designed by an engineer. Other than that they spend surprisingly little time looking at structure. I don't think I've ever been called on to add hangers or anything. Energy code is the big issue around here.